- 4 months ago
Transform your perspective on discarded household items! Many believe that once something is broken or empty, it’s worthless, but that’s far from the truth. Discover the clever ways to repurpose everyday objects, from extracting tools from lighters to uncovering the ingenuity behind old keys. These innovative hacks will show you how to turn what you thought was trash into valuable assets for your home. Say goodbye to waste and hello to creativity!
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FunTranscript
00:00:00When the doorbell rings and the Domino's delivery person hands you a box of steaming hot delicious pizza,
00:00:07your first thought probably isn't about what secret history is hidden in the logo printed on the box.
00:00:12But after you've finished off the last cheesy slice,
00:00:16hey, no judgment, I've been there,
00:00:18you might be interested in the little-known intentions behind the iconic logo.
00:00:23Obviously, the logo is based on a playing piece for the game Domino's.
00:00:27You think? It's right there in the brand name, after all.
00:00:30But why did the designers want the Domino to have three dots?
00:00:33You might think that dots are random, but just like the many logos you see every day,
00:00:39there's a lot more thought behind every detail than you might notice at first glance.
00:00:43Each of the three dots represents one of the original Domino's pizza stores.
00:00:47The plan was to keep adding dots for every new franchise branch they opened.
00:00:52A cool idea, but considering that there are over 10,000 Domino's restaurants now,
00:00:58yeah, dots a lot of dots.
00:01:00It's probably a smart move that they stuck to the original three dots.
00:01:04Can you imagine what the logo would look like if they hadn't?
00:01:07Your pizza box would have to be massive to fit the entire logo printed on it.
00:01:11Okay, if you have an iPhone Mac or an iPad Nano for your favorite 12 tunes, like me,
00:01:17you probably see this logo every day.
00:01:20Hey, even if you don't, we're all super familiar with the Apple logo.
00:01:24It's iconic.
00:01:25Literally, that's what designers call symbolic logos like this,
00:01:28rather than typographical, also known as written logos like Coca-Cola.
00:01:33The current Apple logo that we're familiar with isn't the first design the brand had.
00:01:38You've probably never seen the original Apple logo,
00:01:41which is an illustration of Sir Isaac Newton sitting in the shade of an apple tree.
00:01:45This is a reference to the famous story about how he supposedly discovered goofing off, I mean gravity.
00:01:52It's a far stretch from their ultra-modern current logo.
00:01:55The first unveiling of the apple shape we're familiar with came in 1977,
00:02:00although at that time, it was filled with bright, vibrant colored stripes,
00:02:04representing Newton's work with prisms.
00:02:06A few people believe that the bite in the logo could refer to the computing term bites,
00:02:11but the logo's designer, Rob Janoff, once said that hadn't been the intention.
00:02:16In truth, the bite was added so that the shape would still be recognized as an apple from a distance
00:02:21instead of looking like a cherry.
00:02:24Now, the Amazon logo is pretty self-explanatory,
00:02:27since it was designed to focus on clear typography
00:02:30so that the brand's name can be recognized instantly.
00:02:33Most people know that the yellow swoop is modeled after a smile,
00:02:37making you associate the brand with a cheery feeling.
00:02:40But the swoop also starts at the letter A and points to the Z,
00:02:44which is Amazon's way of claiming that they sell everything from A to Z.
00:02:49Although, how many items could they really sell that start with X?
00:02:54Uh, xylophones?
00:02:55Uh, yeah, just mostly xylophones.
00:02:58Now, the Tour de France logo clearly disguises a cyclist within the letters of his name.
00:03:03The O is the back wheel,
00:03:05and the U and R make up their body, pedaling speedily.
00:03:09Did you spot the biker or read the words first?
00:03:12Here's another beautifully concealed silhouette.
00:03:15In the London Orchestra logo, the letters form the head and arms of a conductor.
00:03:20The L and O create the conductor's waving arms,
00:03:23and the line linking them bumps up to outline the conductor's head.
00:03:27Can you see it?
00:03:28On the surface, the logo of the network company Cisco seems pretty simple.
00:03:33The company's name appears plain as day beneath several vertical lines.
00:03:37However, there's more to it than meets the eye.
00:03:40The blue stripes at the top signify both an electromagnetic wave and the Golden Gate Bridge.
00:03:46That's a nod to Cisco's San Francisco roots,
00:03:48which is also where they got their name, San Francisco.
00:03:53Interestingly, using lines and logos can have a significant impact
00:03:56on how an audience perceives a brand's identity.
00:04:00Vertical lines subconsciously evoke feelings of strength and sophistication.
00:04:04They seem enticing and powerful,
00:04:06and they draw the viewer's attention downward,
00:04:09often directing it to the brand's name, like in the Cisco logo.
00:04:13The Unilever logo appears on so many of the company's products that we use every day.
00:04:19But most of us have never noticed that on closer inspection,
00:04:22the Unilever U logo contains symbols that correspond to the company's diverse product range.
00:04:28Quick, count how many symbols you can spot.
00:04:31Bonus points if you can figure out what Unilever products they represent.
00:04:35Did you catch any of these?
00:04:36A tea leaf?
00:04:37An ice cream cone?
00:04:38A cosmetics jar?
00:04:40A lock of hair symbolizing shampoo?
00:04:43Beats by Dre's clean and simple logo is just a lowercase b followed by the brand's name, right?
00:04:49Well, actually, the circle that surrounds the b represents a human head.
00:04:53And the b is meant to represent someone wearing the headphones.
00:04:57Do you see it?
00:04:58Here, this might help.
00:05:00How about now?
00:05:01You'll never unsee this little guy jamming to his tunes in his beats.
00:05:05By the way, circles are a really common feature in logo design.
00:05:09They're used in 20% of the world's most well-known brands.
00:05:13We emotionally recognize them as softer and more welcoming than angular shapes, like triangles and squares.
00:05:19Plus, they're universal and sturdy, since they don't have any corners, breaks, or turns.
00:05:25Businesses use them to subconsciously tell you that you can rely on them.
00:05:29Every detail is sending you a message.
00:05:32Even if you don't spend your free time analyzing famous logos, we all make quick associations with shapes and colors
00:05:38without even thinking about it.
00:05:40A common experiment has been repeated by multiple psychologists on a phenomenon called the Baoba-Kiki effect.
00:05:47Researchers show participants these two shapes and ask, which of these shapes is Baoba and which is Kiki?
00:05:53Go ahead and try for yourself.
00:05:57Did your brain assign the names easily?
00:05:59You're not alone.
00:06:00Between 95 and 98% of people select the curvy shape as Baoba and the jagged one as Kiki.
00:06:07This tells us that the human brain attaches abstract meanings to the shapes, sounds, and other parts of design.
00:06:14Some people suggest that the IBM logo is supposed to look like it has been printed by one of the
00:06:19world's earliest computer printers.
00:06:21Those weren't great at laying down a smooth coat of ink.
00:06:24Now, that might be true, but IBM's official story is that the horizontal lines are intended to symbolize the speed
00:06:31and dynamics of their services.
00:06:32Also, one study in 2011 found that when a company's logo looks incomplete like this, people consider the business to
00:06:40be more outside the box and invent it.
00:06:43Read between the lines, right?
00:06:45Well, it's either innovation or your printer's out of ink.
00:06:49Now, if I told you to picture the work of surrealist artist Salvador Dali, you might think of this.
00:06:55Or this.
00:06:56But were you also picturing Chupa Chups, the lollipop brand?
00:07:00And very few people know that Dali wasn't the kind of guy to turn down a paid gig.
00:07:05And one example of this is the logo for Chupa Chups, which he worked on developing.
00:07:09He was the one who added the whimsical flower pattern, while the text had already been established by the time
00:07:15he got his hands on the logo.
00:07:17He also had the idea to shift the logo from the side to the top of the candy wrapper.
00:07:21This way, the emblem is always intact and visible to the customer.
00:07:25Chupa Chups is also a great example of another design secret that you'll notice everywhere after you learn it.
00:07:32When food companies are picking out their brand colors, they're overwhelmingly likely to reach for a specific power duo, red
00:07:39and yellow.
00:07:40I bet you could think of three brands that pair rich cherry red and sunshiny bright yellow right away.
00:07:47But why?
00:07:48Thanks to its long wavelength, red is one of the most visible colors in the spectrum, and the first one
00:07:54you'll notice.
00:07:54It's second only to one other color.
00:07:57Yeah, you guessed it, yellow.
00:07:59Both instantly grab people's attention, which is why we use them for important warnings, like stop signs, traffic lights, and
00:08:06drive-thru signs.
00:08:07But still, why is it specifically food brands that latch onto these hues?
00:08:11Well, because of how visually stimulating red and yellow are, they're also associated with excitement.
00:08:18They're warm colors, which are known to draw people in and give them energy and excitement.
00:08:23Seeing the color red could affect people's behavior, including making you think that people who are wearing red are more
00:08:29attractive.
00:08:30All of these physiological effects spike your energy levels, which could explain the pang of hunger you get when you
00:08:37see some restaurant logos, that and the good old craving for salty french fries.
00:08:42Hey, where's that drive-thru?
00:08:44A label on your panties digging into your most sensitive spots is definitely not the best feeling.
00:08:50Sure, you can cut it off, but often that just leaves even sharper corners that can be more annoying.
00:08:56But what if you've been cutting those labels wrong this whole time?
00:09:00Check it out.
00:09:00On the left, the label is sewn into the seam, while on the right, it's just hanging on by a
00:09:06couple of threads.
00:09:07Just snip those threads, and voila!
00:09:10It's like the label was never even there.
00:09:12Plus, with this little hack, you can always pick panties in the store that are guaranteed to be comfy.
00:09:18If you've traveled to Europe recently, you may have noticed how nasty the bottle caps have become.
00:09:24Yeah, according to the law, they now have to scratch your nose.
00:09:27Oops, sorry, they have to be attached right to the bottle.
00:09:31If these bottles annoy you too, try this.
00:09:34Once you open the bottle, rotate the cap 90 degrees, and pull until one of the plastic connections breaks.
00:09:41And finally, turn the bottle until the cap touches your chin, not your nose.
00:09:45And drink!
00:09:47You've been using the colander in the wrong way all this time.
00:09:50This smart kitchen device has a hidden function.
00:09:53The traditional way of draining noodles involves dumping boiled noodles into a colander, right?
00:09:59But if your colander is about the same size as your pot, try this instead.
00:10:04Place the colander on top of the pot with the noodles, like a lid, and drain the water out.
00:10:10This method is faster and less messy, and it keeps your noodles in the pot where they belong.
00:10:17Toilet plungers and sink plungers are quite different, and the toilet version has a handy rubber flap called a flange
00:10:24that pops out from the cup.
00:10:26This flange fits snugly over toilet drains, giving you strong suction to tackle stubborn clogs.
00:10:33While a sink plunger won't help with toilet troubles, the toilet plunger can work on your sink or tub.
00:10:39Just make sure to keep that flap tucked inside the cup.
00:10:43And don't forget to give it a thorough clean with bleach before switching from toilet to sink use.
00:10:48You definitely don't want to mix things up.
00:10:51If you still work in an office, next time you print out something, make sure to check out this stapler
00:10:57built right into the printer.
00:10:58It can staple all the documents that fit in the slot at the same time.
00:11:03By the way, it's not something new.
00:11:05Such printers have been around since the 90s.
00:11:09Why buy a ruler and spend your hard-earned dollars if you can simply use a dollar bill to measure
00:11:15whatever you want?
00:11:17Only as long as this whatever is somewhere around 6 inches.
00:11:21A dollar bill is just about this size.
00:11:25Even though many people are sure that those tiny holes on the bottom left side of your iPhone are the
00:11:31speaker, they're actually a microphone.
00:11:33And speaking of iPhones, if you've got one of the latest models and your phone is out of juice but
00:11:38there's no socket to be found nearby, here's a nifty trick.
00:11:42Grab a double-ended charger cord and connect it to another iPhone 15.
00:11:48Boom! Your phone gets a little power boost.
00:11:51I bet you've noticed that the hook on a tape measure is a little loose.
00:11:55Well, that's intentional.
00:11:57The hook moves just enough to account for its own thickness, ensuring both inside and outside measurements are accurate.
00:12:04So, if you ever thought it was broken, nope, it's just doing its job.
00:12:08As for the hole at the end, it's replacing the tape on the edge of a nail to get measurements
00:12:13from odd spots.
00:12:15The pockets on new suits are sewn shut to keep the jacket's shape during transportation and display.
00:12:22Of course, you can unpick them to use the pockets, but you need to be careful with what you put
00:12:27there.
00:12:27Anything heavy can easily distort the suit's shape.
00:12:31The important thing, though, is to remember to cut the threads holding the back vents together for better movement and
00:12:37comfort.
00:12:37Oh, and remember to cut those tacky stitches that fasten your new coat's vent, that flap on the back.
00:12:45Now, that sink squeegee thing actually hides a big secret.
00:12:49It can store water.
00:12:51Many sink squeegees have tiny holes that allow water to stay inside.
00:12:56But why would we need that water?
00:12:58Oh, you can release it as you squeegee, which will help you rinse the sink as you clean it.
00:13:05Here's a travel tip that will help you understand U.S. highways.
00:13:09In the U.S., highways with even numbers run east-west, and those with odd numbers run north-south.
00:13:15If a highway number starts with an odd digit, it's a spur, which means it doesn't reconnect to the main
00:13:22highway.
00:13:23If it starts with an even digit, it's a loop around or through a city that eventually reconnects with the
00:13:29main highway.
00:13:29And finally, numbers divisible by 5 are major highways meant for cross-country travel.
00:13:37Your iPhone camera can also translate laundry symbols, identify plants, and even recognize some bird species.
00:13:46It's like having a mini-encyclopedia in your pocket.
00:13:49Another trick, when using the markup feature while editing your photos, you might want to highlight a part of a
00:13:56picture.
00:13:56Put a circle around the needed area and keep your finger pressed down at the end of the stroke.
00:14:02Voila!
00:14:03Instead of a misshapen circle, you get a perfect one.
00:14:06It also works for squares, triangles, and stars.
00:14:10Barilla, probably the most famous pasta in the world, has teamed up with Spotify to create playlists that match the
00:14:17cooking time for different pasta shapes.
00:14:20Just start the playlist when you drop the pasta into boiling water.
00:14:23And when the music stops, your pasta is ready.
00:14:28Toasters have crumb trays at the bottom that you can and should clean regularly.
00:14:33Just slide it out and dump the crumbs.
00:14:36It's an easy way to keep your toaster clean and working well.
00:14:40You can use Google Maps to share your location in real time.
00:14:44Just tap your account icon, select Location Sharing, and choose how long to share.
00:14:49Your friends can track your progress and be ready when you arrive.
00:14:53You can also save your parking location by clicking the blue dot.
00:14:58Do you know that the knobs on some ovens have calibration screws on the back?
00:15:03You can adjust them to get more accurate temperature control.
00:15:06It'll definitely help you avoid overcooking or undercooking your meals.
00:15:11In non-prepaid gas stations in the U.S., try pressing Enter before swiping your debit or credit card.
00:15:18It'll take you to the prepaid screen, and you can enter the amount you need manually.
00:15:24If you're drinking outside on a windy day, place some coins in an empty cup, and then put the cup
00:15:30you're drinking from inside the first one.
00:15:33The weight of the coins will help you keep your drink from getting blown over.
00:15:37Simple, but effective.
00:15:40Once you've peeled your potato, you might spot some tiny divots, known as eyes, that still have some skin on
00:15:47them.
00:15:47Many peelers come with a handy scoop designed to tackle these little guys.
00:15:51Just take the scoop, dig in, and pop them out.
00:15:54Easy peasy.
00:15:56Your favorite potato recipe will be totally eye-free in no time.
00:16:02A cell phone's camera can help you to figure out whether your remote is working.
00:16:06The camera is sensitive to infrared, so you just need to turn it on and point the remote at the
00:16:11camera while pressing the remote's buttons.
00:16:14You'll see the LED flashing in response.
00:16:17If you spot nothing, something is definitely wrong with the remote.
00:16:22Bonus fact here.
00:16:23White vinegar isn't just for cooking.
00:16:25It's also the real laundry hero.
00:16:28If you add it to your laundry, it'll take out all the bad smells from your clothes.
00:16:33The amount to add can be anywhere from a splash to a cup during the wash.
00:16:38And don't worry about the vinegar smell.
00:16:40It washes away completely, leaving your clothes fresh.
00:16:43It's also great for removing hard water buildup.
00:16:48Now doctors recommend risking your life at least twice a day.
00:16:52I mean brushing your teeth at least twice a day.
00:16:54But you see, the seemingly harmless toothpaste that peacefully chills on every American counter poses a life-threatening danger because
00:17:03of one not-so-harmless ingredient, sodium fluoride.
00:17:07Now, don't get me wrong, not every toothpaste out there contains it, but most of them still do.
00:17:12But don't rush to the bathroom to trash your tube.
00:17:15If you swallow a tiny pea-sized glob, it isn't fatal.
00:17:19I'm talking about larger quantities.
00:17:21A toothpaste tube has only 0.15% fluoride.
00:17:25To send you running to the hills, you must consume around 8 tubes one by one.
00:17:30So, technically, toothpaste is totally safe.
00:17:34Let's go and look for more dangers at your place, shall we?
00:17:38Personally, I don't have this one.
00:17:40But if you happen to have a CFL light bulb, you gotta be extremely cautious with it.
00:17:44The thing is, many of those bulbs are made with mercury.
00:17:47If such a bulb breaks, you gotta start by turning off your ventilation system.
00:17:52Otherwise, the contamination will only get worse.
00:17:55Make sure everyone has left the room, then open a window to allow for fresh air circulation.
00:18:00Finally, clean the area where the bulb shattered.
00:18:03Be careful to address both wet and dry surfaces and contact specialists.
00:18:08Mercury vapors are definitely the biggest concern when it comes to this element.
00:18:12Take, for instance, a case of 2008, where a 55-year-old guy in Oklahoma tried to extract gold from
00:18:19old electronics using liquid mercury.
00:18:21Unfortunately, he inhaled too much vapor and sadly passed away just 10 days later.
00:18:27The contamination was so severe that they had to completely gut his house.
00:18:33Now, you definitely don't want your favorite clothes to get ruined by moths.
00:18:37So, you might grab some mothballs to exterminate them.
00:18:40But watch out!
00:18:42Those mothballs can exterminate you, too.
00:18:45They usually contain chemicals like naphthalene or a paradichlorobenzene.
00:18:50When these get into the air, they turn into gas.
00:18:53That strong smell you associate with mothballs kicks in.
00:18:56Those fumes can actually irritate your eyes and lungs and may even cause headaches, dizziness, and nausea.
00:19:02Plus, there are concerns about these chemicals being the cause of major conditions that even modern medicine can cure.
00:19:09Naphthalene is especially risky because it can break down your red blood cells, leading to a condition called hemolytic anemia.
00:19:17So, try to swap those balls for good old lavender.
00:19:20Moths aren't big fans of it.
00:19:23Now, it's super important to keep an eye on the plant you bring into your home, because some can be
00:19:27surprisingly harmful.
00:19:29Take Diefenbachia, commonly known as dumb cane, for example.
00:19:34Rumor has it that its sap can cause your tongue to swell up so much that it can block your
00:19:39airway.
00:19:39But can it really?
00:19:41Yes and no.
00:19:42It's true that this plant contains poisonous, tiny needle-like crystals called rapides.
00:19:47But they require someone to actually chew on a leaf first before any fuss happens.
00:19:53Otherwise, you might just feel a brief burning sensation or observe some skin redness.
00:19:58In rare cases, you might see some swelling in the area that touched the plant.
00:20:02Generally, just a little nibble leads to mild discomfort.
00:20:06So, please, don't snack on your potted plants.
00:20:09This warning is more for the safety of your pets, especially cats.
00:20:13Now, if Diefenbachia stays in contact with the mouth for too long, it can cause some serious pain that might
00:20:19linger for days or even weeks.
00:20:21In those cases, a trip to the hospital might be necessary, especially if the throat gets affected, as that could
00:20:28impact breathing.
00:20:29But don't believe the hype that Diefenbachia is a lethal poison.
00:20:32That's just an urban legend.
00:20:34The bottom line?
00:20:35One must be really dumb to get poisoned by a dumb cane.
00:20:40Now, using a power washer can be more dangerous than you might think.
00:20:45The intense pressure can lead to serious injuries, and the high-speed spray can kick up debris that might cause
00:20:51even more harm.
00:20:52If you do get injured, infections can set in quickly.
00:20:55And without timely medical care, things can get really serious.
00:20:58Think severe complications, potential limb loss, or even worse.
00:21:03But honestly, it's not that scary.
00:21:05Just don't overdo it with pressure.
00:21:09Here's a friendly tip.
00:21:10Don't skip out on your weekly house cleaning, especially when it comes to the bathroom.
00:21:15The longer you put off cleaning it, the more risky it becomes.
00:21:19Bathrooms are notorious hotspots for bacteria, which makes regular cleaning essential.
00:21:24You definitely don't want those unwelcome guests, like norovirus, E. coli, salmonella, or even staphylococcus aureus, hanging around.
00:21:33Along with those molds and mildews.
00:21:35Just put things into perspective, an average toilet seat can host over 200,000 colony-forming bacteria.
00:21:42And here's another thing to keep in mind.
00:21:44If you're not careful while cleaning, you can accidentally create a dangerous situation.
00:21:49Mixing bleach and ammonia can release a toxic gas called fluoramine.
00:21:54Those fumes can lead to some pretty nasty symptoms, from shortness of breath to fluid in your lungs.
00:22:00Guess what?
00:22:01If it happens, you will probably kick the bucket.
00:22:04And I'm not talking about the one you use for cleaning the floors in the bathroom.
00:22:10On a sweltering summer day, having air conditioning is definitely a blessing.
00:22:14But don't let that trick you into thinking there aren't risks involved.
00:22:18If your AC is on the older side, it can lead to various issues.
00:22:22For example, the ductwork and filters can trap harmful mold, bacteria, and allergens.
00:22:28If those aren't addressed, folks in your home might end up dealing with coughing, wheezing, or a stuffy nose.
00:22:34Plus, an aging AC unit can pose a fire risk.
00:22:38Older components tend to generate more heat as they try to keep up.
00:22:42And if they're not replaced, you could end up with a potential fire hazard.
00:22:46Faulty wiring is another concern, as many wires are tucked away in hard-to-reach spots, making them tough to
00:22:52inspect.
00:22:53So, if you have an older AC, it's a smart move to have it cleaned properly and ensure that its
00:22:59parts and wiring are up-to-date to avoid any fire risks.
00:23:05Snuggling under a cozy electric blanket when the weather turns chilly sounds like a dream.
00:23:10But if electric blankets get too hot, they might lead to burns.
00:23:14This risk is particularly significant with older models that don't have an automatic shut-off feature.
00:23:20So, the best way to use such a blanket is to warm up your bed and then turn it off
00:23:25before you crawl in.
00:23:26There's also the concern of heat stroke, linked to the use of an electric blanket.
00:23:31Once, two people were discovered unresponsive in their beds beneath electric blankets.
00:23:35The first person's body temperature reached an alarming 106.2 degrees Fahrenheit, while the second person's temperature was 105.8
00:23:45degrees Fahrenheit.
00:23:46So, while these blankets offer comfort, it's crucial to use them wisely.
00:23:52Just a quick heads-up about windshield washer fluid.
00:23:55It contains methanol, which can really pack a punch.
00:23:58If ingested, it can cause everything from dizziness and headaches to severe poisoning.
00:24:03Make sure to store it safely and keep it in the original container.
00:24:07Never transfer it to unmarked bottles.
00:24:10It can easily be confused with water and other harmless liquids.
00:24:13And that's a big no-no.
00:24:15Methanol is super toxic.
00:24:17For a grown-up, 2 to 8 ounces can do the trick.
00:24:20You know what I mean.
00:24:21The windshield washer fluid you dump into your car usually has about 30 to 50% methanol in it.
00:24:28But the concentrated versions?
00:24:29They can pack a serious punch with 90 to 100% methanol.
00:24:34Just remember, these products need to be diluted with water before you use them.
00:24:39The last everyday thing on our list does seem to be a great buddy of ours, especially if located in
00:24:45the bathroom.
00:24:45But although air fresheners can give your home a pleasant scent, many of them release volatile organic compounds that can
00:24:53build up over time and may pose serious health risks, including neurological issues and incurable conditions.
00:24:59I suggest, if you were to ask me, you play it safe and think about opting for natural alternatives or
00:25:06enhancing your home's ventilation instead.
00:25:09Got that?
00:25:10Good.
00:25:12A doctor is about to perform a surgery.
00:25:15He positions the lamp over the patient and…
00:25:17Wait, what?
00:25:18His hand doesn't cast a shadow.
00:25:20And it shouldn't, because even one little dark spot could ruin a life-saving operation.
00:25:27This magic happens thanks to a large number of light bulbs.
00:25:32Each LED shines on the patient from a different angle, creating overlapping patterns.
00:25:38A sensor detects any obstacles and compensates for shadows by dimming some LEDs and increasing the output of the others.
00:25:46Harry Potter's invisibility cloak is now a reality.
00:25:50Well, sort of.
00:25:51Meet Metamaterial, a futuristic fishnet that can make things invisible by manipulating electromagnetic waves.
00:25:58What happens is that when light hits an object, it either gets absorbed or bounces back.
00:26:04Either way, it makes the object visible.
00:26:07But with Metamaterial, instead of absorbing or reflecting light, it bends it around objects, making them invisible to the unaided
00:26:15eye.
00:26:15The bad news is that, for now, it only works with specific wavelengths of light, like radio waves.
00:26:21So, this invisibility cloak doesn't work with visible light.
00:26:25The things we can actually see, just yet.
00:26:29In Sweden, two women managed to create an invisible bike helmet.
00:26:33Well, okay, maybe not that invisible, since you have to wear this thing around your neck for it to work.
00:26:39This neck piece has a sensor with a special algorithm that can distinguish between regular biking and a crash.
00:26:46So, if a cyclist is wearing this and gets into an accident, the sensor automatically activates and inflates the neck
00:26:53piece with cold helium gas, instantly deploying the helmet that looks like a head airbag.
00:26:59And if you're worried about the helmet tearing after hitting the ground, don't be.
00:27:03It's made of super strong nylon fabric designed to handle pretty much any strong impact.
00:27:10Well, it seems we're not quite masters of invisibility yet, but transparency is a different story.
00:27:17Back in the 90s, a botanist in Germany managed to create a see-through wood.
00:27:22This invention was almost forgotten for decades, but recently, a group of researchers upgraded the material to make it tougher
00:27:29than glass.
00:27:31Regular wood is like a bundle of tiny straws held together by a natural glue called lignin, which gives it
00:27:38strength and color.
00:27:39To make wood transparent, scientists remove or bleach lignin, leaving a white, skeleton-like structure.
00:27:46Then, they fill these cells with a clear substance like epoxy resin, making the wood see-through.
00:27:52But don't worry, you won't be walking into forests full of invisible trees anytime soon.
00:27:57The idea is to use this technology to create things that need to be tough, like windows and smartphone screens.
00:28:05Seeing things that aren't really there, like holograms, is seriously bizarre.
00:28:10This technology is basically like watching 3D images of real objects, but without the need to put on those old
00:28:17-school 3D glasses.
00:28:19To create a hologram of a flower, for example, you start by pointing a laser at a special mirror.
00:28:25This process will split the laser beam into two parts.
00:28:29One part bounces off another mirror, illuminates the flower, and then hits a photographic plate.
00:28:34The other part of the beam bounces off a different mirror and goes straight onto the same photographic plate.
00:28:41When these two beams come together, they make a 3D picture of the flower.
00:28:45So, basically, a hologram is an optical illusion of epic proportion.
00:28:52Levitation is probably the greatest magic trick of all time.
00:28:56While magicians typically use optical illusions to make things appear to rise and hover in the air,
00:29:02science can actually achieve it in the real world.
00:29:06A process known as quantum levitation allows materials known as superconductors to float above magnets.
00:29:13You see, these materials naturally repel magnetic fields, but some allow a few magnetic lines to pass through.
00:29:21This creates tiny vortices where magnetic flux can pass, helping the superconductor remain suspended,
00:29:28kind of locked in the middle of the magnetic field, defying gravity.
00:29:35Last year, outfits that changed colors and patterns right before our eyes went viral.
00:29:40This incredible fashion trick was achieved using photochromic materials.
00:29:45When this type of fabric is exposed to sunlight,
00:29:49UV radiation causes electrons to transfer between different states,
00:29:53which alter their optical and electrical properties.
00:29:56In simple words, they change colors.
00:29:58Since natural sunlight intensity varies all the time,
00:30:02the colors of the outfits also shift constantly.
00:30:06Unfortunately, the effect only lasts for about three minutes.
00:30:10Sure, you might wear something that changes colors, but would you eat it?
00:30:15I'm not talking about a banana ripening from green to yellow.
00:30:18I'm talking about chamelion,
00:30:20an ice cream made in a lab that tastes like tutti-frutti and has a superpower.
00:30:25It changes color in your mouth.
00:30:27This treat shifts from lavender blue to pink upon touching your tongue.
00:30:32Although the physicist who invented it is pretty secretive about the recipe,
00:30:37we do know that the magic comes from how the treat reacts to changes in temperature and acids in your
00:30:43mouth.
00:30:43Oh, and the inventor also mentioned you can spray something he calls
00:30:48love elixir onto the ice cream to speed up the reaction.
00:30:52Science has advanced to the point where we can actually make it rain and snow.
00:30:56This technique is called cloud seeding.
00:30:59And although it might seem like an X-Men superpower,
00:31:02it is pretty easy to understand how it works.
00:31:05First, the weather needs to be cloudy.
00:31:08Once a cloud forms, workers at a control center send a plane to the area to stimulate rainfall.
00:31:13As soon as the brave pilot enters the cloud, the plane releases tiny particles, such as silver iodide, into the
00:31:21air.
00:31:21These particles help water droplets form and grow, which produces rain.
00:31:26Sounds simple, right?
00:31:28But playing storm is pricey.
00:31:30An average four-hour operation that seeds 24-hour clouds would cost around $5,000.
00:31:38If the storm gets too loud, just grab your noise-canceling headphones for some quiet time.
00:31:43These magical gadgets work by listening to the noises around you.
00:31:47Then their built-in microphones create sound waves that are the opposite.
00:31:51When these opposite sound waves mix with the noise, they cancel each other out, making everything quieter and clearer.
00:31:58Concrete often has a problem.
00:32:00It cracks, which makes it less durable, and that's not good.
00:32:04So, the smart move is to go for self-healing concrete.
00:32:07This magical material has tiny capsules, or nanotubes, inside that are filled with healing agents like calcium carbonate.
00:32:15When a crack forms and hits these capsules, they burst open from pressure or moisture exposure.
00:32:21This releases the healing agent into the crack, where it mixes with things in the air, like water or carbon
00:32:27dioxide, to toughen up the concrete again.
00:32:31If you're planning to build a house, you should consider using a 3D printer.
00:32:36I know it might sound crazy, but nowadays, it's completely possible to print an entire 500-square-foot house in
00:32:43just 24 hours.
00:32:45It kind of works the same way as a regular 3D printer.
00:32:48First, you design the house plans on a computer.
00:32:51Then, you send it to print.
00:32:53That's when colossal robotic arms come into play, laying down layers and layers of a special concrete mixture that harden
00:33:01as they go.
00:33:03Magic sand may look like an innocent toy, but it defies logic.
00:33:08I mean, it is sand that remains dry even underwater.
00:33:12But here's how it works.
00:33:13The sand is coated with a hydrophobic compound, which causes the grains to stick together and form cylinders when submerged
00:33:22in water.
00:33:23So, if you put the sand in an aquarium, for instance, this compound will create an air pocket around the
00:33:29sand, keeping it completely dry.
00:33:32Talking about toys, did you have a boomerang when you were young?
00:33:36It is pretty fascinating how it always comes back into your hand.
00:33:40The trick behind it lies in its L-shape.
00:33:43A boomerang is designed with two or more wings positioned in a special way so that when it spins, it
00:33:50generates unbalanced aerodynamic forces that curve its path into an ellipse, allowing it to return to the spot from which
00:33:58it was thrown.
00:33:59Of course, this only works when it's thrown correctly.
00:34:02So maybe it's better to avoid using it altogether, especially inside your house.
00:34:08So listen, if you don't want your next barbecue party to end up at the emergency room, you might want
00:34:13to get rid of that wire brush you use to clean the grill.
00:34:17Over a hundred people have to seek medical help because of it every year.
00:34:20Those brass and steel bristles easily separate from the brush and stick to cooked food that ends up in your
00:34:27mouth.
00:34:27With each swallow, they go deeper and deeper.
00:34:30They can poke into or puncture the lining of your mouth, throat, and esophagus, or somewhere else down your intestinal
00:34:37tract.
00:34:37The symptoms this causes could be signs of many different conditions.
00:34:42And because of their tiny size, the bristles are really tricky for doctors to spot.
00:34:46So you can lose the precious time to solve the problem at an early stage.
00:34:51In some cases, one ER visit can solve the problem.
00:34:54But if the bristle moves into deeper tissues, say into your neck, chest, or abdomen, well, it could start an
00:35:01infection.
00:35:02And you'd need some complex surgery to save your life.
00:35:06That was the case for a 63-year-old lady in Michigan.
00:35:09She was eating a hot dog grilled by her husband, and she felt something was wrong from the first bite.
00:35:15She could barely swallow the food because of an unusually painful sore throat and had to see the doctors for
00:35:21help.
00:35:22They sent her home after an inspection, but the symptoms only got worse and worse.
00:35:26A CT scan several months later showed the problem with some tiny metallic object that looked like a piece of
00:35:33hair at the back of her throat.
00:35:35The doctors were able to remove it during surgery.
00:35:39So, to play it safe, take good care of your wire grill brush and inspect it before putting food on
00:35:46it.
00:35:46If you see any loose or dangling wire bristles, get rid of them.
00:35:50If this sounds like too much work, just toss that brush all together.
00:35:54There are some safe alternatives to it, like wooden panels, pumice stone, nylon bristle brush, or liquid grill cleaner.
00:36:01You can also roll a piece of aluminum foil into a ball and use grill tongs to hold it while
00:36:07you're scrubbing your dirty grill grates.
00:36:09Cooking pros say an onion cut in half can also do the job.
00:36:15The caterpillar that arrived at your barbecue party as an uninvited guest might seem cute and harmless, but not all
00:36:22of them are safe to pick up and play with.
00:36:24There are several types of venomous caterpillars in the U.S. alone that can give you a hard time.
00:36:30Any brightly colored caterpillar that has a spine, bristles, or looks fuzzy could be venomous, and you're better off not
00:36:37touching it.
00:36:38Many caterpillars are equipped with hairs or spines, which are connected to poisonous glands.
00:36:44They often hide on the underside of the leaf, so you could easily miss it.
00:36:48So when you're doing some work in the garden, it's a good idea to wear gloves and clothes with long
00:36:54sleeves.
00:36:54Your skin will thank you for it.
00:36:57If you get stung by accident, use any sticky tape to remove the hair or spines,
00:37:02and then just wash the affected spot with soap and water.
00:37:07If you plan to go swimming or boating to cool down after the party,
00:37:11remember that algal blooms are just a freaky splash of color in the water, but a real problem.
00:37:17They are toxic and can cause a lot of trouble for you and your pets.
00:37:21The symptoms will be less than pleasant, and will involve you spending a great deal of time in the bathroom.
00:37:28Algae bloom means there are plenty of bacteria in the water.
00:37:31So don't swim in it, and don't drink the water, no matter how thirsty you are after all the swimming.
00:37:37And if you happen to get some ingested water on your skin, take a long shower with clean water immediately.
00:37:44The media should report cases of dangerous algae blooms in your area,
00:37:48so make sure to check it before you hit the nearest lake.
00:37:53Wild parsnip might not appear in your summer nightmares,
00:37:56but this yellow-flowered plant can do some really mean things to your body.
00:38:00It contains a substance called solorin, and when you accidentally touch it and then enjoy a walk in the sun,
00:38:07the effect it will leave on your skin will be as nasty as the name sororin.
00:38:12And you could have dark red or brownish discoloration on your skin for months
00:38:16after your unwanted rendezvous with a plant.
00:38:19It's mostly active and mischievous between May and July, so watch out!
00:38:26All right, a garden hose must be completely safe as, unlike the grill brush, it doesn't have any small metallic
00:38:33parts, right?
00:38:35Well, when you leave it hanging out in direct sunlight, the water inside can heat up to 120 degrees Fahrenheit.
00:38:42If you spray someone with water this hot, their skin won't love it.
00:38:46It's especially dangerous for youngsters and pets.
00:38:49So, if you see someone blissfully unaware, grab the hose, take it from them by force if needed,
00:38:55and let the water run for a few moments before you let anyone play with the hose.
00:39:00It's for their own good.
00:39:01The intense sun can also heat up all the bad chemicals the hose itself contains, like lead and thylates.
00:39:08So, check what yours is made of and replace it with a safer version that's labeled lead-free or drinking
00:39:14water safe
00:39:14if you plan to use the water for drinking or playing.
00:39:18And if you already have a safe version but suddenly smell a terrible odor,
00:39:22it could be the algae and bacteria that just love stagnant water.
00:39:26If it comes into contact with your skin or you swallow it by accident, you could have some serious health
00:39:32problems.
00:39:33The best you can do is replace the hose.
00:39:36And yes, make sure you keep it in a cool shaded area and drain it well after every use.
00:39:44Now, you're never too old to love the trampolines.
00:39:47But the trampoline might not love you back and give you a spinal injury or broken bones.
00:39:52Almost 100,000 injuries like this with young users happen every year
00:39:57because they're so easy to fall from or land in the worst possible way during a somersault or a flip.
00:40:03The biggest risk of trampoline trouble is when more than one person is using this fun contraption.
00:40:10Nearly 75% of all accidents with trampolines happen when two jumping youngsters crash into one another.
00:40:17And no, some netting or padding really can't save the day.
00:40:21If you want to keep things safe, make sure there's always only one person at a time on the trampoline.
00:40:27You're going to need to install shock-absorbing pads that completely cover the trampoline's metal frame, springs, and hooks.
00:40:34If you see any signs of the padding getting too old, like tears and fraying, you need to replace it
00:40:40immediately.
00:40:41Make sure the trampoline stands on level ground and isn't too close to other structures and trees.
00:40:50A slide in your backyard, no matter if it's made of metal or plastic,
00:40:54can turn into a frying pan under the sun and can heat up to 189 degrees Fahrenheit.
00:41:00So, before you jump on it or let someone else do it, check the temperature of the whole thing top
00:41:06to bottom.
00:41:07And even when your little sister or someone else you love is begging you to go on a ride with
00:41:12them, don't do it.
00:41:13The slide is designed for one person of a certain size.
00:41:17When the two of you end up tandem sliding, the smaller leg can get caught up between the bigger leg
00:41:22and the edge of the slide.
00:41:24The speed will also increase, and it can lead to all sorts of drama.
00:41:29Finally, no matter how tempting it feels in the hot months, don't walk barefoot on that beautiful lawn in the
00:41:36park or even in your own garden.
00:41:38You never know what's hiding in the grass.
00:41:40And if you step on something sharp, like a rusty nail hiding in the grass, you'll get yourself into a
00:41:46lot of trouble.
00:41:47Flip-flops aren't the best idea for everyday summer shoes either.
00:41:51They rarely come with arch support and can make you take shorter steps and put more stress on your body.
00:41:56It's just not good for your feet, joints, and muscles.
00:42:00Otherwise, have a great summer.
00:42:08Trains used to make people mad.
00:42:10During the Victorian era, there was this rumor that the swaying motion of train carriages made passengers, especially men, go
00:42:18a bit crazy, leading to some strange and dangerous behavior.
00:42:22The so-called railway madness was supposedly triggered by the noise of the train.
00:42:28To make things worse, carriages were locked for privacy reasons back then, so people found themselves stuck in tiny spaces
00:42:35with lunatics who could snap at any moment.
00:42:40If you see someone putting ketchup on some car, it doesn't mean you're witnessing them preparing a prank.
00:42:47It means they're just taking care of their car.
00:42:50Yup, it goes great with hamburgers and hot dogs, but it goes even better with cars, since it has ingredients
00:42:57that are good at removing rust.
00:42:59Rust occurs when the metal gets exposed to moisture, oxygen, and heat, and due to weather conditions, it's hard to
00:43:07avoid it.
00:43:08When you leave rust for a longer time and don't deal with it, it will continue to degrade the metal.
00:43:15So, you need to get rid of it before your car becomes physically useless.
00:43:21That's when ketchup comes in.
00:43:23Its key ingredient is tomatoes, and they have many nutrients similar to those you can find in oranges and some
00:43:31other citrus fruits.
00:43:33For instance, citric acid can help you remove rust from metal surfaces, since it eats through rust.
00:43:39We're not talking about the cars only.
00:43:42You can use it on metallic kitchenwares, furniture parts, jewelry, and rust spots on generally any metallic item.
00:43:50You can combine it with washing soda.
00:43:53It's not quite effective against rust, but when you combine it with ketchup, it'll do the work.
00:43:59Mix these two and apply them to the rusted area.
00:44:03Leave it like that for about half an hour, and wash it with a wet cloth or sponge.
00:44:09You can combine ketchup with salt instead, or just apply a lot of it on the rusty area, without using
00:44:17any additional ingredients.
00:44:19Ketchup removes tarnish from brass copper, too.
00:44:23Put it on brass hardware on doors and cabinets, or some accessories such as bowls and candlesticks, for 10 minutes
00:44:31to make it all shine.
00:44:33And also, you don't put it on meat just because of taste.
00:44:37Ketchup breaks down its fibers, which means it makes it more tender.
00:44:42Locking handles as we know them were only invented relatively recently, in 1878.
00:44:48Before that, people had to get pretty inventive to secure their homes.
00:44:51Most folks used a latch string.
00:44:54They'd make a small hole in the door, thread a leather thong or string through it, and then loop it
00:44:58around a wooden bar.
00:45:00Even after doorknobs were invented, only the wealthy could afford a proper lock and key.
00:45:06Vacuum cleaners had a rough start, too.
00:45:09The first one was invented in 1901, but it was so huge that it wouldn't fit inside houses.
00:45:15Instead, vacuuming was offered as a mobile service.
00:45:18The machines were parked outside, and long hoses were fed through the windows.
00:45:22And to get to the client's house, these large cleaning machines were actually pulled by horses.
00:45:29Back in the day, animals even used to pull strollers.
00:45:33Yep, with kids inside.
00:45:35The stroller was first developed in 1733 for the daughters and sons of a British nobleman,
00:45:41who might have been a bit too lazy to walk with them every day.
00:45:44So, the first model was basically a shell-shaped basket on wheels that could be pulled by a goat or
00:45:50a small pony.
00:45:51This small chariot was cute, but probably not the safest way to get around.
00:45:58Refrigerators also used to be a bit scary.
00:46:01From the late 1800s until 1929, they used toxic gases like ammonia, methyl chloride, and sulfur dioxide to cool things
00:46:09down.
00:46:10People were so concerned about gas leaks that they began leaving their refrigerators in the backyard,
00:46:15instead of keeping them in the kitchen.
00:46:17This danger even inspired Albert Einstein to create a new model.
00:46:21In 1926, Einstein and his former student Leo Seelard invented a refrigerator with no moving parts,
00:46:29using safer, environmentally friendly gases to reduce the risk of toxic leaks.
00:46:34But it had one problem.
00:46:36Einstein's refrigerator was less efficient than existing appliances, so it wasn't commercially appealing.
00:46:43If you ever find yourself casually wandering in the forests of Estonia,
00:46:47don't freak out if you see some giant megaphones.
00:46:50These wooden, acoustic giants were set three hours away from the country's capital by interior architecture students.
00:46:58That's way cooler than the hamster roller coaster I once built for a science fair, I have to admit.
00:47:04More than half of Estonia is covered by woods, and they're pretty proud of this natural wealth.
00:47:09So it's not the first art project of this kind, and there was a winding, elevated pathway and a faceted
00:47:15woodland cabin.
00:47:17The idea of the megaphones is to crank up the natural sounds of a forest and also to serve as
00:47:23a rest spot for hikers.
00:47:26These wooden beauties are large enough to host several people.
00:47:30And hey, if you walk this far into the woodland, you'll be thankful for this.
00:47:35The students were given a task to invent some concepts of a forest library.
00:47:40They built the megaphones off-site and brought them to their permanent spots.
00:47:44They're set in such a way that sounds from three directions meet in the center and create a cool, natural
00:47:51surround sound effect.
00:47:52Thankfully, kitchen supplies, including our beloved grills, have come a long way.
00:47:57Back in the 1950s, a metalworker named George Stephen had a brilliant idea while trying to create the perfect steak.
00:48:05Frustrated with flare-ups and uneven cooking, he decided to cut an old ocean buoy in half.
00:48:10This allowed him to control the airflow better.
00:48:13And that's how the Weber Kettle Grill was born, changing backyard barbecues forever.
00:48:19Have you ever used a public bathroom in the summer in your shorts and sandals and got splashed?
00:48:25It happens to the best of us, so no worries.
00:48:28If only there was some solution to this problem.
00:48:31Perhaps a urinal with a small hole so no liquid goes where it shouldn't.
00:48:36Looks pretty yucky and painful to me.
00:48:39An assistant professor at the University of Waterloo, Zhao Penn and his colleagues came up with a way better solution
00:48:46for this sensitive issue.
00:48:48Their designs were inspired by physics and dogs.
00:48:52When a stream of liquid moves on a solid surface at a shallow angle, the splash is reduced.
00:48:58And the smaller the angle, the fewer splashes you'll see.
00:49:01You can even minimize them to a zero.
00:49:03And when dogs do their business, they lift their hind legs and do it on the vertical surface of a
00:49:09tree or a wall.
00:49:10I don't know if they actually care about it, but this does reduce the splash.
00:49:15Good job, Pluto!
00:49:16Talking about that!
00:49:17Here's a fun challenge for your next family gathering.
00:49:20Ask everyone to fold a piece of paper in half, then in half again, and keep going for a total
00:49:26of seven folds.
00:49:27Spoiler alert!
00:49:28They probably won't succeed.
00:49:30That's because each fold makes the paper thicker and thicker.
00:49:34In fact, if you had a huge sheet of paper and folded it in half 50 times, it would end
00:49:39up being about 62 million miles thick,
00:49:42which is about two-thirds of the way from Earth to the Sun.
00:49:46So, yeah, it's impossible.
00:49:48The current record is held by a high school student named Brittany Gallivan,
00:49:52who managed to fold a single piece of paper in half 12 times, and it was a tissue paper.
00:49:59The USB symbol, looking like a trident, has always sparked multiple speculations about its origin.
00:50:06One popular idea is that it represents Neptune's trident and symbolizes power and adaptability.
00:50:12But there's also a little bit less exciting theory.
00:50:15A man who claimed to have designed the symbol in the 1980s stated that it was supposed to represent connectivity.
00:50:22The large circle symbolizes a computer, while the attached shapes, the circle, the triangle, and square, stand for different outputs.
00:50:31Look closely at a tram's overhead lines, and you'll see that its contact wires zigzag back and forth instead of
00:50:38going in a straight line.
00:50:39That's because all trams have pantographs attached to their roofs.
00:50:44The upper part of the pantograph is gradually worn down by the overhead wire and eventually needs to be replaced.
00:50:50To wear it down evenly, the wire is not installed strictly along the tram's path, but in zigzag patterns.
00:50:58As the tram moves, the pantograph slides along the wire, and it wears down evenly.
00:51:05Those cone-shaped water cooler cups?
00:51:08Their shape is intentionally designed to prevent users from setting the cups down.
00:51:13This allows employees to minimize the risk of spilling water on their desks around various electronic devices.
00:51:19Plus, less material is used to produce cone-shaped cups, which makes the process less wasteful and more cost-effective.
00:51:27It also kind of supports sustainability by encouraging people to drink their water quickly and dispose of their cups immediately
00:51:33after.
00:51:34You're probably wearing a YKK product right now.
00:51:37I mean, go check the zipper on your jeans.
00:51:39Yep, that's it!
00:51:41YKK stands for Yoshida Kogyo Kabushiki Kaisha,
00:51:45a Japanese company that makes roughly half of all the zippers in the world,
00:51:50producing over 7 billion zippers each year.
00:51:54Originally called hookless fasteners, they became known as zippers
00:51:58after a pair of rubber boots that could be fastened with a single zip became popular in 1923.
00:52:04The name stuck because of the high-pitched zip sound they make when used.
00:52:09Despite a popular myth, household batteries don't actually contain liquid,
00:52:13and if you accidentally cut them open, no toxic liquid will spill.
00:52:18Most of them are dry cell batteries, which are made of electrochemical cells.
00:52:21Those convert chemical energy into electrical energy.
00:52:25Larger batteries often house numerous small cells within them, too.
00:52:30Even Tesla vehicle batteries consist of multiple small cells.
00:52:34When combined, they easily provide the necessary voltage.
00:52:38Did you know that nail polish used to be a status symbol?
00:52:42In ancient Egypt, queens like Nefertiti and Cleopatra were famous for their red nails,
00:52:48while lower-ranking citizens were only allowed to wear pale shades.
00:52:53You'll probably agree that there's no better snack than a pack of chips.
00:52:57Some are flat, others have ridges.
00:53:00Is it just aesthetics?
00:53:02Not really.
00:53:03The main purpose of those lines on some kinds of chips is to help with the distribution of spices and
00:53:08seasonings.
00:53:09In other words, all those substances that make your chips taste like cheese are mostly stored inside the lines.
00:53:15Plus, the lines make chips crunchier.
00:53:19This item here was also popular in ancient Egypt.
00:53:22What looks like a weird bench was actually a weird type of pillow.
00:53:27Back then, headrests were made from materials like wood, ceramic, and stone.
00:53:33Unlike our comfy pillows today, those ancient ones were used to protect people's hairstyles.
00:53:38That way, their hairdos stayed neat, even though they had a very uncomfortable night.
00:53:43If you've left a pot on the stove and your food burned, once again, take ketchup.
00:53:49Its acids will ease all the scrubbing and help you with grease.
00:53:54Just leave it over the night and you'll be able to wash the pot more easily.
00:53:59Or, keep those small packages of ketchup we all end up having from fast food orders in the freezer.
00:54:05The ketchup won't be as hard as an ice cube as it freezes.
00:54:08So, it will be good for soothing insect bites or similar things.
00:54:13For eight centuries, forks were considered cursed and nearly forbidden in the West.
00:54:18The first models were used by the elite in the Middle East and the Byzantine Empire.
00:54:23And they made their way to the West in 1004, thanks to a noblewoman named Maria Aguirre Polina.
00:54:30People were pretty shocked by it, to say the least.
00:54:32So, when she passed away just two years later, everyone blamed the fork, thinking it was some kind of divine
00:54:38punishment.
00:54:39By the way, its name comes from the Latin word furca, which means pitchfork.
00:54:45Next on our list is Nike's iconic moonshoe.
00:54:49But I'm talking about the unique pattern of its sole.
00:54:52Back in the 1970s, Nike co-founder Bill Bowerman was making waffles for breakfast with his wife when he had
00:54:59a sudden idea.
00:55:00To pour a plastic material called polyurethane into the waffle iron.
00:55:05The machine was ruined, of course, but I guess it was worth it, since that's how the first Nike waffle
00:55:10trainer was born.
00:55:11I mean, its soul.
00:55:13That clear fluid in gel pens is called the ink follower or stopper fluid.
00:55:18The gel in such pens contains pigment particles dissolved in a polymer solution.
00:55:23The main task of the stopper fluid is to be a barrier to prevent the gel from evaporating or leaking
00:55:28out.
00:55:29Without this transparent fluid, your gel pen wouldn't function.
00:55:34The fluid always stays in one position and doesn't get dissolved with the gel.
00:55:39Neither does it move backwards or flow out of the pen.
00:55:42Let's move on to another favorite snack.
00:55:45Popcorn.
00:55:46These days, cinema and popcorn go hand in hand, but it wasn't always this way.
00:55:50In the 1920s and 1930s, movie theater owners were hesitant to allow snacks in their theaters.
00:55:57They were worried about the mess and the crunching noises interfering with movies.
00:56:01Plus, popcorn used to cost only 5 to 10 cents, so they didn't see any financial benefit.
00:56:07But savvy street vendors saw a big chance.
00:56:10So, they got their own popcorn machines and started selling them outside theaters.
00:56:15That's why popcorn probably became the original clandestine movie snack.
00:56:19And theater staff would even have to check if people were hiding bags of it in their coats.
00:56:26Have you ever helped your friends move into a new apartment in a building without an elevator?
00:56:31Then you're gonna love this one.
00:56:34Houses in Amsterdam have hooks on top.
00:56:36This is a medieval invention for pulling stuff up the houses.
00:56:40The simple tech consisting of a wheel and a rope still functions now, centuries later.
00:56:45Why not just use the stairs?
00:56:47Well, if you get inside one of those narrow Amsterdam buildings, you'll see there's hardly enough room to comfortably ascend.
00:56:55And you can forget about even trying to pull a table on top.
00:56:59Back in the medieval ages, pretty much like now, only rich people could afford housing around the canals in the
00:57:05best parts of the city.
00:57:07Those people were mostly traders and used the canals for their business.
00:57:11They stored goods in the same houses they lived in.
00:57:14And with regular floods, they had to find a way to keep the goods dry.
00:57:18And that's why they needed to invent something to lift furniture, goods, boxes, instruments, and food on the upper floors
00:57:27and pull it in through fully open, wide windows.
00:57:31The lifting tech is one of the reasons the houses in Amsterdam are leaning forward.
00:57:36This position helped keep both the lifted stuff and the walls and windows safe during transportation.
00:57:43They didn't have to touch each other.
00:57:45The gables also assisted in the process and had to be made firm to withstand all the heavy weight.
00:57:52And in case you're wondering what gables are, they're sections of wall between the edges of a dual-pitched roof,
00:57:59typical for Amsterdam.
00:58:01Sticking with old-school fun, it's time to talk about carts.
00:58:04So, have you ever wondered how many times you need to riffle a deck to shuffle it completely?
00:58:10The answer is seven times, according to math.
00:58:13Even cooler, if you shuffle a deck right, you're probably creating a unique order that's never existed before and never
00:58:20will again.
00:58:21And if you have a deck at hand, check out the four kings.
00:58:25You'll notice that the king of hearts is the only one without a mustache.
00:58:29He's not special or anything.
00:58:31I mean, he also used to have a mustache, but it was lost in the reproduction of the original design.
00:58:36Your home has more regular things that can do magic tricks.
00:58:40Like if you have a house or a big terrace and want to make a nice flower wall.
00:58:45Try old mattress springs.
00:58:47Just hang them on the wall and let your imagination run wild with flowers.
00:58:53An old flower sifter can still come in handy.
00:58:56For example, as a planter.
00:58:58Even if you don't have one, you might find it at a garage sale or a thrift store.
00:59:04Wallpaper is making its big comeback when it comes to home design.
00:59:08Maybe you can try something different and use some old books with torn pages.
00:59:32Solitaire was probably everyone's go-to game to pass the time back in the 1990s, but its original purpose was
00:59:38far from it.
00:59:39When developers created this game, their idea was to teach people how to use a computer without them even realizing
00:59:47it.
00:59:47For example, dragging and dropping cards into one place helped people learn how to move files into folders.
00:59:54The same goes for Minesweeper, which was designed to help people get used to using a mouse and clicking.
01:00:02Cleaning blinds can be frustrating, but the next time you do it, try doing it with a sock over your
01:00:08hand.
01:00:08Hands are kind of perfectly shaped for getting all those nooks and crannies on the blinds, and the sock will
01:00:15do the rest.
01:00:18Here's something you wouldn't expect.
01:00:20Ice cubes can help you remove gum from carpet, clothing, and hair.
01:00:25Just put your clothes in the sink and add ice cubes.
01:00:28Leave it like that for a while.
01:00:30Ice will freeze the gum, so you can chip it away more easily.
01:00:34If the gum got stuck on the carpet, leave ice cubes right in the critical spot and remove the gum
01:00:41with a butter knife.
01:00:42It's a little bit harder to remove it from hair though, but still possible.
01:00:47Just wrap the ice and parts of your hair with the gum in a washcloth until the gum gets frozen.
01:00:53When you get there, you should be able to break apart the gum and free your hair, using your fingers.
01:01:00Or, next time you have to deal with a splinter, just take one ice cube to numb that area before
01:01:06you even start doing anything.
01:01:09You might have noticed that movie theater seats are almost always red.
01:01:14This choice isn't random.
01:01:15It has strategic importance, which is rooted in visual science.
01:01:19The thing is, red light has a longer wavelength.
01:01:22It means that it's the first color to disappear in low light.
01:01:25It allows the audience to concentrate better on the screen once the movie begins.
01:01:30Such a design choice enhances the viewing experience by minimizing distractions.
01:01:36Speed bumps are crucial for pedestrian safety.
01:01:39But at the same time, they can seriously increase car emissions due to the non-stop acceleration and deceleration they
01:01:46cause.
01:01:47To address this issue, some cities like London are testing fake speed bumps.
01:01:52Those are optical illusions painted on the road.
01:01:55They look raised from a driver's perspective, but in reality, they're flat.
01:02:00Authorities hope that this approach will slow down drivers without having a negative impact on the environment.
01:02:08Soda bottles are always filled in such a way that there's some space between the liquid and the cap.
01:02:13That's because soda contains carbon dioxide.
01:02:16It's a gas that can expand once the bottle's heated.
01:02:19If there's no gap in the bottle, it can break because of the pressure building inside.
01:02:25Also, when you open your drink, the gases go out in the form of bubbles, making the drink overflow.
01:02:30The gap helps with this problem, too.
01:02:33If you're more into Angry Birds, Candy Crush, and other mobile games, that's totally normal.
01:02:38After all, more people have access to cell phones than to toilets these days.
01:02:42But not many of us stop to think about how disgusting our phones can be.
01:02:47The natural bacteria from our skin and the oils from our hands get transferred to our phones with every touch,
01:02:53swipe, and tap.
01:02:55This makes phones about 10 times dirtier than toilet seats.
01:02:59Yikes!
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