- 4 months ago
Unlock the secret genius behind everyday tools! This deep dive reveals the incredible, often overlooked features of items like tape measures and hammers that can change how you tackle projects. Discover the hidden design elements that inventors cleverly integrated to solve real-world challenges. These insights are not just practical; they redefine what you thought you knew about your tools. Get ready for a surprising journey into tool innovation that will elevate your DIY game!
Category
🎈
FunTranscript
00:00Have you ever stopped to think about the thrilling secrets of day-to-day modern life on planet Earth?
00:07I'm talking about tiny windows and washing machines and little holes in airplane windows.
00:13If you haven't got a clue of what I'm talking about, tag along and allow yourself to be as surprised
00:19as I was when I found out.
00:23Remember the drawer at the bottom of your oven?
00:25Maybe you've been ignoring it all along, or using it to store pots and pans.
00:30Well, even though it can serve this function, that's not the only thing it's there for.
00:36The best way to use the bottom drawer is to keep your meal heated while you're waiting to serve it.
00:41Genius, right?
00:43Talking about secret doors, have you noticed that most washing machines have little flap doors at the bottom too?
00:50These doors actually serve as drain traps.
00:53It's where all the items that we put to wash together with our jeans and jackets go to.
00:59It's a type of collector, let's say, of small items.
01:03It stops them from getting into the main drain pipes and clogging them.
01:07It saves us hundreds of dollars in repairs each month.
01:12Now, who hasn't gone through the confusing task of having to measure how much pasta to cook for one serving?
01:19Well, here's the solution.
01:21The holes in the center of pasta spoons.
01:24They were actually made for measuring the exact amount of dry pasta you need for one serving.
01:30If you try stuffing wet cooked pasta through it, well, good luck with that.
01:36On a similar topic, have you ever wondered why pen caps have holes in them?
01:41Maybe you thought it was a design feature to regulate air pressure.
01:45But in reality, these holes have a much simpler and more important function – to reduce the risk of choking.
01:52Now, lots of people love to bite on their caps.
01:56And this tiny hole prevents them from choking in case they accidentally swallow a cap and it gets stuck in
02:02their throat.
02:03For kitchen lovers, there's a hidden secret right in front of your eyes that can change your life.
02:09Think pans.
02:11Now think handles.
02:12Right!
02:13They have holes in them.
02:14As it turns out, these holes were designed to hold the spoon you're using for cooking.
02:19And instead of dripping sauce all over the stove or your kitchen floor,
02:24you can place the spoon in the hole and let it drip the sauce directly back into the pan.
02:30Woo-hoo!
02:32Speaking of everyday items, and I was,
02:36most doorknobs are made of brass because this material makes them naturally germ-free.
02:41Unlike plastic ones, brass doorknobs are kind of magical.
02:45They can disinfect themselves without you having to clean them.
02:50Neat, right?
02:52Have you ever noticed that at the bottom of a measuring tape, there is a little dip?
02:57You can find it in that metallic part you need to pull on to measure something.
03:02Well, that dip is actually the exact size of a regular nail.
03:06It was designed for people to place the tape on top of a nail and use it as a support
03:12while they stretch the tape.
03:13Well, I can't wait to try it out for myself.
03:17As for the margins in your notebook, they were invented to protect people's notes from mice.
03:24No, the mice weren't copying your answers for the math quiz.
03:28Actually, there were times when people had to cohabitate with rats and mice that often chewed on paper.
03:35So, to prevent information from getting completely lost, people created margins.
03:41This way, texts were moved closer to the middle of pages and remained unharmed by rodents.
03:48Hmm, perhaps this is where to digest information came from.
03:54And what about those tiny holes at the bottom of airplane windows?
03:58They have an extremely important function of regulating the air pressure inside the cabin.
04:04In other words, they help planes fly high up in the sky.
04:08Big responsibility, right?
04:11By the way, tray tables on an airplane are the germiest places inside the entire cabin.
04:17Studies showed that the trays had eight times the amount of germs on the toilet flush button.
04:25Now, how about we cut a commercial airplane in half and see what's inside?
04:31Well, it would look more or less like this.
04:33Rows of seats on top and everything else that needs to be stored at the bottom.
04:38I'm talking about passengers' luggage, emergency supplies, parts of the wing system, and so on.
04:46Moving on to bowling balls.
04:48Yes, I know it's a clumsy transition.
04:52Anyway, have you ever wondered what the insides of a bowling ball look like?
04:57If you have cut a professional ball in two, you'll see a familiar shape.
05:02Look closely.
05:03Do you see it?
05:04Doesn't that look like the logo of Brightside?
05:07Anyway, professional bowling balls are different from the ones in your local bowling alley.
05:12That's because they're designed to make fancy moves.
05:15They actually have some really complex engineering inside.
05:19They're shaped to help skilled professionals get more strikes.
05:23The weight of professional bowling balls is designed to be projected inward as they travel down the bowling lane.
05:29This makes it harder for them to get into the gutters on the sides of the lane.
05:35Speaking of balls, let's take a look inside a baseball.
05:39To make it light and aerodynamic, producers use several different layers.
05:44Starting from the core, we have a cork center enveloped by black rubber.
05:49Then there's a layer of red rubber, followed by two or three alternating layers of wool yarn.
05:55After that, there's a visible white leather cover and that beautiful red seam on the side, stitching it all together.
06:04And what if you had x-ray vision and managed to look inside a human bone?
06:10Ooh, spooky!
06:12I'd say what caused most attention is this spiderweb-like situation at the center of the bone.
06:18In reality, it's a highly condensed and complex structure of nerves that you have inside your bones.
06:25Aren't you lucky?
06:27Now, I've got a riddle for you.
06:29What is round can be found near the ocean and looks like an aerial view of the Guggenheim Museum in
06:35New York City,
06:36the one that's made almost entirely of ramps.
06:39If you said a nautilus shell, hey, then you guessed right.
06:44A nautilus is a shellfish whose house you can find in countless souvenir stores near the beach.
06:50It's made up of two layers, a matte white outer layer and an iridescent white inner layer.
06:57And if you were to cut it in half, it would look very similar to the insides of the Guggenheim
07:02Museum.
07:04Aloe leaves are good for healing purposes and also for hydration.
07:08But if you managed to look inside of an aloe leaf, the image you'd see would be satisfying and very
07:16relaxing.
07:17Who hasn't dreamed of a pool filled with jelly?
07:21Now, there seems to be nothing more mundane and regular than a tube of toothpaste.
07:26But you wouldn't think so if you cut open a tube that contains several colors.
07:32Now, there have been speculations that the insides of such a toothpaste tube might be divided by barriers,
07:38so that the stripes don't mix.
07:41But if you cut it in half, you'll see that it has only one interior chamber.
07:47As it happens, there's a lot of science behind the making of striped toothpaste.
07:51According to a specialist, they have to ensure that the paste in all the stripes has the same physical properties.
07:59This way, the colors are naturally prevented from mixing with one another.
08:03That's why, if you tear a tube open, you'll see something that looks like several slices of pizza in different
08:09colors.
08:11If you open your closet, you're bound to find at least a few wooden hangers.
08:16Usually, they're made of cedar wood, which is a natural moth repellent.
08:20So, cedar hangers actually protect your clothes from moth infestation.
08:26For some people, more than others, eyeliner is an everyday must.
08:30Boy, isn't it.
08:32But did you know that back in ancient Egyptian times,
08:36both men and women used cool eyeliners to protect their eyes from the sun's glare?
08:41Way to go for the Egyptians for figuring that out!
08:44Now, if I could just learn to walk like one!
08:49Normally, we use headrests for the purpose of, well, resting our heads, right?
08:55Well, not only!
08:56As it turns out, headrests can be easily removed from the seats
09:01and used to break car windows in case of emergencies.
09:05Now, this one is a trick very few people know about.
09:09You probably place your doormat horizontally, like most of us do.
09:13But doormats serve the purpose of absorbing dirt from the soles of your shoes
09:18before you enter your home.
09:20So, for this function to work as it's meant to,
09:23the best way to place a doormat is vertically.
09:27This way, you take more steps on the top of the doormat
09:30before entering your house.
09:33And, last but not least,
09:35now, I don't want to be accusatory here,
09:37but you have probably been vacuuming your house the wrong way.
09:41And I can prove it.
09:43Most people just vacuum floors and carpets in one direction
09:47or move the brush back and forth several times,
09:50thinking they've got all the dust out.
09:53But according to cleaning professionals,
09:55the best way to vacuum is in rows.
09:57First, you go forward with the brush
10:00until you arrive at the end of the row.
10:02Then, you fluff the carpet up
10:04and move back down along the same row,
10:07gathering the dust that wasn't collected in the first sweep.
10:10Talk about efficient cleaning.
10:12On the other hand,
10:13my idea of house cleaning
10:15is to sweep the room with a glance.
10:18Hey, I don't want to disturb that protective layer of dust.
10:24From the iconic golden fries
10:26to a broken ice cream machine,
10:28here are 10 fast food secrets
10:29that the fast food industry
10:31doesn't really want you to know.
10:33Ah, chicken nuggets.
10:34Those golden crispy bites
10:36you can get from fast food chains.
10:38They're even on the menu of school lunches.
10:40What if I tell you
10:41that they aren't actually made entirely out of chicken?
10:45Researchers took chicken nugget samples
10:47from unnamed fast food chains
10:49and analyzed them.
10:50They said that one sample, for instance,
10:52contained only 40%
10:53and another 50% of meat.
10:56The rest?
10:57Well, you're eating mouthfuls of things like fat,
11:00connective tissue,
11:01and bone spicules.
11:03Many fast food companies
11:04grind the meat with that stuff.
11:06They make mechanically formed orbs of chicken parts.
11:09Why?
11:10Perhaps it's because this method
11:12is cheaper and more profitable.
11:14Millions of restaurants worldwide
11:15have chicken nuggets on their menu.
11:17So, scientifically,
11:19it's not fair to say
11:20all nuggets are made this way.
11:21But a lot of studies imply so.
11:25The more the meat is processed,
11:27the more you lose the good stuff,
11:28like vitamin B6 and B12.
11:30The bitter truth
11:31is that companies add stuff,
11:33such as sodium,
11:34to the mixed paste.
11:36Sodium is added
11:37to get a better flavor.
11:38It's one of the ingredients
11:39that makes nuggets so yummy.
11:42Our bodies need sodium,
11:43but not too much of it.
11:45Unfortunately,
11:46most junk food contains
11:47more than our bodies can handle.
11:49So, it might be a safe option
11:51to avoid eating
11:52these sorts of foods frequently.
11:54Chains dip their nuggets
11:55into tempura batter
11:57and fry them in hydrogenated oil.
11:59That's also not a green light
12:01regarding health,
12:02but this is how they catch
12:03the golden tint.
12:05They put additional stuff in nuggets.
12:08What about grilled chicken?
12:09In recent years,
12:10we've seen brands
12:11highlighting grilled chicken
12:12as a healthier option.
12:14Research has been done
12:15about grilled chicken, too.
12:17And the same approach
12:18is applied here.
12:19Take chicken samples
12:20from iconic fast food companies
12:22and send those
12:23to labs for analysis.
12:25The results show
12:26that companies
12:27are misleading people
12:28by advertising these products
12:30by labeling them
12:31as healthy, natural,
12:33and 100% chicken breast.
12:35In reality,
12:36a couple of things
12:37are added to the meat
12:38to make it tender and juicy.
12:40Plus, these additives
12:41make it easier
12:42to cook the meat,
12:43freeze, and transport it,
12:45and reheat it later
12:46without losing too much moisture.
12:48The drawback
12:49of all these additives
12:50is that they affect
12:51the nutritional value
12:52of the chicken breast.
12:54These ingredients
12:55aren't the healthiest for us.
12:57We should especially
12:58watch out for three things.
12:59The first one
13:00is, again, sodium.
13:02Fast food samples
13:03had 7 to 10 times
13:04more sodium
13:05than home-cooked chicken breast.
13:07Imagine you have
13:08a cheeseburger,
13:09but you say no to yourself
13:10and try to pick
13:11a less harmful menu item.
13:13Yet, some chicken sandwiches
13:14have the same amount
13:15or even more sodium
13:17than a cheeseburger
13:18with medium fries.
13:19The second thing
13:21you need to watch out for
13:21is phosphate additives.
13:23These additives
13:24allow the protein
13:25to conjoin more water.
13:27This means
13:28the white meat
13:29in the sandwich
13:29will appear juicier to you.
13:31Any word you see
13:32in the ingredients section
13:34that contains phos
13:35is a phosphate additive,
13:36so it's best to avoid them.
13:39The last thing
13:40you should avoid
13:40is sugars and starches,
13:42not just in grilled chicken,
13:44but pretty much
13:45in all fast food products.
13:46Oh, that's hard to digest,
13:48I admit.
13:49Cornstarch, sugar, malt,
13:50they come with
13:51grilled chicken breast.
13:53Buns and even some fries
13:54have sugar too.
13:56Everywhere I look,
13:57it's sugar.
13:58You see,
13:59home-cooked chicken
14:00has zero grams of carbs,
14:01but the study samples
14:03had added sugar
14:04and up to 10%
14:05of the calories
14:05in the chicken breast
14:06comes from there.
14:07So what's the moral
14:09of this story?
14:10If you're a health-conscious diner,
14:11you should maybe
14:12go for other options.
14:14There are secret recipes
14:16from companies
14:17like KFC
14:17and Coca-Cola.
14:19No company wants
14:20to share the ingredients
14:21that make their food
14:22irresistible,
14:23but with a little research,
14:25you can decipher
14:26many things.
14:27You want to know
14:28the secret of McDonald's fries?
14:29It's written
14:30on their website.
14:31They add beef flavoring
14:33to the frying oil.
14:34This may sound weird,
14:35but apparently,
14:36that's a known practice
14:37amongst chefs
14:38and restaurants.
14:40Duck fat
14:40has also been used
14:41as a flavor,
14:42for example,
14:43in high-end restaurants.
14:45I'm a fries lover,
14:46so I added another fact
14:48about fries.
14:49Sadly,
14:50they're even saltier
14:51than you think.
14:52Experts suggest
14:53that a grown-up
14:54should consume
14:54at most
14:552,300 milligrams
14:57of sodium daily.
14:58Guess the McD's
15:00large fry sodium number?
15:01At least
15:02400 milligrams.
15:04Classic fries
15:05from Burger King
15:06have 732 milligrams,
15:08and Five Guys
15:09take the level
15:10even higher
15:11with 962 milligrams
15:13of sodium.
15:15Next time,
15:16maybe you can ask workers
15:17to go easy
15:17on the salt
15:18as a solution.
15:20Picture this.
15:21You're in a hurry,
15:22but your tummy says,
15:23feed me,
15:24or I'll affect your mood
15:25and make life
15:25miserable for you.
15:27For a quick snack,
15:28you enter a fast-food
15:29chain restaurant.
15:30You order
15:31your favorite burger.
15:32It looks and smells
15:33as if it's just been
15:34taken from the grill
15:35and served.
15:36Nope.
15:37They have different
15:38types of grills
15:39designed for this
15:40that can cook meat
15:41super quickly.
15:42Sorry to bear
15:42the bad news,
15:43but those perfect
15:44grill marks
15:45on your burger
15:45aren't real tools.
15:47The factory adds them.
15:49If you want to know
15:50how clean an eatery is,
15:52look under the ice chute
15:53of the soda machine
15:54in places where you
15:55can get your own drink.
15:56There you go,
15:57inspector.
15:57You solved the case.
15:59Various studies say
16:01that if such machines
16:02aren't cleaned correctly,
16:03dirty, contaminated ice
16:05can lead to some
16:06health problems.
16:07There could be mold
16:08or bacteria there.
16:09Ew.
16:10The process of cleaning
16:11ice machines
16:12isn't easy.
16:13The same thing applies
16:14to ice cream machines,
16:15too.
16:16Rumor has it that
16:17those ice cream machines
16:18aren't out of order.
16:19Employers just cannot find
16:20time to clean them properly.
16:22Now,
16:23what's the best time
16:24to get a good
16:25and fresh meal?
16:26Here are two opinions,
16:28and they both have
16:28solid reasonings.
16:29The first team recommends
16:31avoiding ordering
16:32grilled food in chains
16:34from 7 to after midnight.
16:36Many former employees
16:37say that sometimes
16:38they had taquitos
16:39or hot dogs prepared
16:40at around 4 or 5 a.m.,
16:42but kept waiting to serve
16:44them till around midnight.
16:45That's not healthy.
16:47The other team says
16:48you should order
16:49between 11 a.m.
16:50and 1 p.m.,
16:51or between 6 p.m.
16:53and 8 p.m.
16:54to get the freshest meal.
16:55Since it's going to be
16:56around lunch
16:57and dinner time,
16:58there'll be circulation
16:59and you can get
17:00decent food.
17:02Fast food companies
17:03have marketing,
17:04design,
17:04and psychological tricks
17:06to lure you in
17:07and make you order,
17:08yet they don't want you
17:09to stay inside
17:10for too long.
17:11If you were dining
17:12in mood lighting,
17:13you know under dim lamps
17:15and candlelight
17:16you would take
17:16your time to eat.
17:17As the name suggests,
17:19you should be fast
17:19like your food
17:20in chain restaurants.
17:21They have fluorescence
17:23and they're in full light.
17:25Similarly,
17:26the floors and tables
17:27have reflective surfaces
17:28that make food
17:29look nice and bright.
17:31Plus,
17:32music is usually fast
17:33and loud.
17:34It's done to prevent you
17:36from spending hours there,
17:37yet they want you
17:38to take advantage
17:39of the first 20 minutes
17:41after your purchase.
17:42The faster you eat,
17:43the longer it will take you
17:45to feel full.
17:46Scientists say
17:47it takes about 20 minutes
17:48for our stomachs
17:49to inform our brain,
17:50okay,
17:51now I'm full.
17:53It's a good idea
17:54to eat in a clean area,
17:56but most of these companies
17:57are using cleaning products
17:58that have super strong chemicals.
18:01Assume that the staff
18:02clean the place
18:03at the end of their shift.
18:05They wipe down the soda machine
18:06and grill surface
18:07and then you showed up
18:08early the next day.
18:10You may get some of that
18:11chemical residue
18:12on your food
18:13compared to other customers
18:14visiting the place
18:15later in the day.
18:17The vegan patty
18:18may not be 100% vegan.
18:21I'm talking about the grill,
18:22not the meat itself.
18:24In most of the chains,
18:25vegan burgers are cooked
18:26on the same grill
18:27as meat burgers.
18:29Do you have fast food chain secrets
18:31you want to share?
18:32Tell them to fellow
18:33Bright Siders
18:33in the comments.
18:38Bet you've never heard
18:40of corrugation.
18:41It's a system
18:42that may lie hidden
18:43in your pantry right now.
18:46Ever notice those bumps
18:48on food cans?
18:49That's exactly
18:50what they're called.
18:51And they're not
18:52just for aesthetics.
18:53First off,
18:54they make the can
18:55extra strong.
18:56That's because
18:57they can help it
18:58from cracking
18:59during the manufacturing process.
19:01Plus,
19:02these corrugations
19:03come in handy
19:04during delivery,
19:05acting like a shield
19:06to make sure
19:07there's no spillage.
19:09They're also useful
19:10in the long run
19:11because they help
19:12keep the cans
19:12in their original shape.
19:14Even when things
19:15get too hot
19:16or too cold,
19:17these corrugations
19:18let them breathe a bit.
19:19They expand
19:20and contract
19:21without breaking the metal.
19:22You may not notice
19:24any cracks
19:25on regular cans,
19:26but even the tiniest
19:27of openings
19:28can leave a way
19:29for nasty bacteria
19:30to get in contact
19:31with the food.
19:33Not to mention,
19:34they create
19:34this little air gap,
19:36so when you pop
19:37the can open,
19:38everything slides out
19:39smoothly,
19:40without you having
19:40to put in
19:41that much effort.
19:42You know what
19:43also doesn't require
19:44much effort?
19:45Hitting that subscribe
19:46button and liking
19:47this video.
19:51You know there's
19:52a plant out there
19:53that's so eager
19:54to reach the sun
19:55you can hear it grow?
19:57Rhubarb,
19:57just before it's picked
19:59from the fields,
20:00soaks up all the sun rays
20:01it can get
20:02to make glucose.
20:04After this sunbathing session,
20:05it gets transported
20:07to dark sheds.
20:08Inside,
20:09it keeps on growing
20:10and uses the stored
20:12glucose as fuel.
20:13Nothing out of the
20:14ordinary so far,
20:15but in that dark,
20:17cozy,
20:17and warm place,
20:19rhubarb starts
20:20acting weird.
20:21That environment
20:22pushes the plant
20:23to stretch itself out
20:24in hopes it will
20:25find sun rays again.
20:29It happens so fast
20:30that you can actually
20:32hear the buds
20:33and stalks
20:34making noise
20:34as they pop open.
20:36To make sure
20:37this process
20:37goes smoothly,
20:38there's no light
20:40allowed.
20:41If light hits
20:42the rhubarb
20:43at this point,
20:44it will start
20:45photosynthesizing again
20:46and go bitter.
20:51Speaking of
20:51everyday groceries,
20:52you might have noticed
20:54that veggie bags
20:54come with some
20:55green stripes.
20:56Know that it's
20:58a sneaky optical trick.
20:59Those stripes
21:00fool our eyes
21:01into believing
21:02the veggies
21:03look way greener
21:04than they are.
21:05And it's not just
21:06veggies that get
21:07this special packaging.
21:08Oranges are often
21:10sold in red mesh
21:11bags for the same
21:12reason.
21:13Lemons?
21:14They go for yellow
21:15or green bags
21:16for that same
21:17pop of color.
21:19If your cooking
21:20skills aren't that
21:21good and you're
21:22just afraid you're
21:23going to mess up
21:23dinner yet again,
21:25stick to mushrooms.
21:26That's because
21:27they're almost
21:27impossible to
21:28overcook.
21:30Unlike other
21:31vegetables that
21:31turn into mush
21:32when overcooked,
21:34mushrooms are
21:34way more resistant.
21:36they've got this
21:37interesting substance
21:38called chitin,
21:39a molecular structure
21:41that works like
21:42an armor.
21:43So you can cook
21:44them forever.
21:45They won't burn.
21:49Donuts don't have
21:50holes in them
21:51because it's easier
21:52for you to pick
21:53them up.
21:53If you've ever
21:54tried to make
21:55them at home,
21:55you might have
21:56noticed that when
21:57you fry the dough,
21:58the outside gets
21:59done quickly,
22:00thanks to the hot
22:01oil.
22:01If you want the
22:02inside to look
22:03just as good,
22:04you have to keep
22:05it in the oil
22:06way longer,
22:07but then the
22:08outside would get
22:08too brown.
22:10Thanks to that
22:11middle hole,
22:12the heat gets to
22:12both sides equally,
22:14cooking up a
22:15flawless donut.
22:19Here's how that
22:19small piece of
22:20paper makes it
22:21into your fortune
22:22cookie.
22:23First, they bake
22:24these cookies flat
22:25like pancakes.
22:26Then, while
22:27they're still warm
22:28and bendy,
22:28they sneak in
22:29those tiny messages.
22:31As the cookies
22:32cool down,
22:32they toughen up
22:33and keep their
22:34shape,
22:34trapping the
22:35fortune inside
22:36like a tasty
22:37time capsule.
22:38One legend has
22:40it that these
22:40Asian treats
22:41were initially
22:42intended to
22:43help people
22:43send all sorts
22:45of secret
22:45messages without
22:46causing any
22:47suspicion.
22:48Here's a little
22:49tip for whenever
22:50you're buying
22:50lunch at a
22:51fast food place.
22:52Skip the word
22:53extra when
22:54you're ordering.
22:55The moment
22:56you speak that
22:57term, you're
22:58tempting the
22:58employees to
22:59charge more.
23:00Instead, go for
23:01something like
23:02a little more
23:03please, when
23:04you're getting
23:04a special
23:05burrito bowl.
23:08According to
23:09a UK study,
23:11cheese is the
23:11most stolen
23:12of foods
23:13worldwide.
23:14It's estimated
23:15that around 4%
23:16of all cheese
23:17just vanishes
23:18from stores.
23:19And no, it's
23:20not mice doing
23:21the stealing,
23:22it's people.
23:23Why?
23:24Because cheese
23:25is becoming
23:25more and more
23:26valuable.
23:27The price of
23:28cheese is
23:28constantly going
23:29up, and sneaky
23:30thieves are
23:31trying to make
23:32easy money by
23:33simply taking it
23:34from the racks.
23:34It's not just
23:36cheese, though.
23:37Other interesting
23:37items on the
23:38thieving list
23:39include fresh
23:40meat, chocolate,
23:41and seafood.
23:44Ferrara, the
23:45company behind
23:46those luscious
23:47jars of Nutella,
23:48needs about 25%
23:50of the world's
23:51hazelnuts every
23:52year.
23:53So if you think
23:54about it, 1 in 4
23:55hazelnuts ends up
23:56in a chocolatey
23:57jar, the
23:58manufacturers get
23:59the nuts from
24:00Turkey, Italy,
24:02and Chile, making
24:03sure they get
24:03them delivered from
24:04both the northern
24:05and southern
24:06hemispheres to
24:06keep things fresh.
24:08Nutella's impact
24:09on the economy
24:10is even bigger
24:11than you'd
24:11imagine.
24:12Because of this
24:13demand, the price
24:15of hazelnuts went
24:16through the roof.
24:17In 2014, a frost
24:19hit Turkey's
24:20hazelnuts, supply
24:21got halved, and
24:22prices were even
24:24higher.
24:24Now, even
24:26places like New
24:27Jersey are trying
24:28to grow those
24:28Nutella-worthy
24:29nuts.
24:33When you imagine
24:34someone trying to
24:35sneak something
24:36into space, your
24:37first thought
24:37wouldn't be a
24:38sandwich.
24:39But back in
24:401965, during a
24:42Gemini mission,
24:43astronaut John
24:44Young brought a
24:45corned beef sandwich
24:46on board, going
24:47against NASA rules.
24:49He hid it in his
24:50spacesuit pocket
24:51before blast-off.
24:53About two hours
24:54into the five-hour
24:55trip, he went to
24:56the mission
24:56commander and
24:57offered him this
24:58unlawful treat.
25:00The commander, being
25:01a good sport, took
25:02it, and they shared
25:03a quick, savory
25:04moment.
25:04He even put the
25:06unfinished sandwich
25:07in his own
25:07spacesuit pocket to
25:09avoid crumbs making
25:10a mess of the
25:11spacecraft.
25:12Meanwhile, the
25:13official NASA-approved
25:14food was waiting
25:15patiently in a box
25:17nearby.
25:19Surely, radishes
25:20aren't your first
25:21pick when it comes to
25:22salad ingredients, but
25:23they have quite an
25:24interesting history
25:25too.
25:26These mustard, broccoli,
25:28cabbage, and cauliflower
25:29cousins have been
25:30grown and eaten for
25:32longer than you'd
25:33imagine, even before
25:34the Romans were
25:35famous in ancient
25:36Egyptian times.
25:38In fact, radishes
25:39were used as
25:40currency for the
25:41people who built the
25:42pyramids, alongside
25:43onions and garlic.
25:47You'd think the
25:48English are champions
25:49when it comes to
25:50drinking tea, but
25:52you'd be wrong.
25:52Turkey is in fact
25:54the tea capital of
25:55the world.
25:56Every Turk drinks
25:57an average of
25:581,300 cups of tea
26:00each year.
26:01On a regular day,
26:03they're sipping on
26:043 to 5 cups, but
26:06when winter hits,
26:07they can reach 10
26:08cups a day.
26:09Locals claim tea is
26:11like a social custom
26:12for them.
26:12It's more than just
26:13a hot beverage.
26:14It's an excuse to
26:15sit down, enjoy the
26:17atmosphere, and
26:17connect with loved
26:18ones.
26:19When it comes to
26:20types, black tea is
26:21preferred.
26:23There might be a
26:24magical drink hidden
26:25in your fridge.
26:26It's tonic water, and
26:28it might be able to
26:29glow in the dark.
26:30If you're curious, test
26:32it out with some
26:33ultraviolet light.
26:34The secret behind
26:35this glow is pretty
26:36simple.
26:37Tonic water has
26:38quinine, a chemical
26:40that lights up under
26:41certain conditions.
26:43Quinine was used
26:44back in the day to
26:45treat certain health
26:46problems.
26:46The stuff was so
26:48bitter that some
26:48people started mixing
26:50it with sugar and
26:51soda water.
26:51In simple terms,
26:53things glow because
26:54they absorb light
26:55energy, gets all
26:57excited, and then
26:58releases it as
26:59visible light.
27:00Quinine in tonic
27:01water absorbs and
27:03releases energy,
27:04making your drink look
27:05like it's from a
27:06fairy tale.
27:09There's an interesting
27:11connection between what
27:12we hear and what we
27:13taste.
27:14Scientists investigated
27:16and found that people
27:17worldwide link certain
27:18sounds with specific
27:20flavors, and they call it
27:21cross-modal correspondence.
27:24High-pitched sounds
27:25match up with sweet and
27:26sour tastes, while the
27:27lower, jarring sounds go
27:29hand-in-hand with
27:30bitterness.
27:31If it's staccato, think
27:33crunchy, and if it's
27:35smooth and flowing, think
27:36creamy.
27:37Some even found music
27:39that can enhance the
27:40taste of chocolate.
27:41In this study, when
27:43people listened to a
27:44high-pitched sweet
27:45soundtrack while eating
27:46chocolate, they thought
27:47it was sweeter than when
27:48they'd heard a lower,
27:50more dissonant
27:51soundtrack.
27:57So, consider this.
27:59People started making
28:00ridge patterns on coins
28:02in past centuries to
28:03fight counterfeiters.
28:05In the old days, cheaters
28:06cut off the smooth edges
28:08of coins and used that
28:09metal to mint new money.
28:11But with ridges, it
28:12became impossible to
28:13hide the cutting.
28:15These small cylinders on
28:16the charging cables are
28:17called chokes or ferrite
28:19cores.
28:20They're magnetic iron
28:21oxide that helps to
28:23prevent electromagnetic
28:24interference.
28:25In simple words, they
28:26protect your device from
28:28faults.
28:29We all know about these
28:30little pockets on jeans
28:31where people used to keep
28:33their pocket watches.
28:34But what about these
28:35small metal buttons?
28:36They help hold the
28:37fabric together.
28:39Weavers put the buttons
28:40where the jeans can tear
28:41during moving and
28:42straining.
28:43These small holes on
28:45some backpacks were
28:46designed to tie extra
28:47gear to them, so you
28:48can pass ropes through
28:50them and tie sneakers if
28:51you don't want to keep
28:52them inside your backpack
28:53or in your hands.
28:55This tiny dot next to
28:57the camera on your
28:57iPhone is a microphone.
28:59It helps to get good
29:01quality of sound while
29:02taking a video.
29:03The Spotlight feature on
29:05your Mac can be used not
29:07only for a quick search of
29:08files and apps.
29:09It also works as a
29:11calculator.
29:12Just type in a
29:13mathematical problem you
29:14need to solve.
29:15Spotlight also uses
29:16internal dictionary data.
29:18Enter any word in the
29:20search bar, and you can
29:21get information about it.
29:23You've just bought a new
29:24bottle of oil.
29:25You're taking off the lid
29:26and looking at this little
29:28cork that you can tear off
29:29by pulling the loop.
29:30Take this thing out, but
29:32don't throw it in the
29:33trash.
29:34Put it back in an upside-down
29:36position to control the
29:37pour's flow by pressing your
29:39finger against it.
29:41Tiny ridges on the F and J
29:43keys on the keyboard help
29:45your fingers navigate during
29:46touch typing.
29:47When your index fingers are
29:49on these ridges, you know
29:50exactly where other letters
29:52are.
29:53The brushes on the sides of
29:55the escalators are not for
29:56polishing your shoes, but for
29:58your safety.
29:59These nylon bristles prevent
30:01your laces and clothes from
30:02getting inside the escalator's
30:04gears.
30:05No, that wouldn't be good.
30:07Most door handles are made of
30:08brass.
30:09This type of metal is good for
30:11fighting microbes.
30:13Bacteria can't multiply that
30:14much on such surfaces.
30:16These public toilet's cubicles
30:18don't look private for a
30:20reason.
30:21Huge gaps at the bottom were
30:23created to make you want to
30:24get out of there as soon as
30:25possible.
30:26Thanks to this design, there
30:27are almost no cubes.
30:29You can use a plastic lid from
30:31soda cups as a coaster.
30:33It has the perfect shape to
30:35hold your drink and keep a
30:37table surface from getting
30:38wet.
30:38Don't turn the lid upside down.
30:40Just put it on the table the
30:42same way it was on the cup.
30:44If you're stuck in a car during
30:45an accident and can't open the
30:47doors, you can use bars from the
30:49detachable headrest to break the
30:51window and get out.
30:53Remember those small plastic
30:55discs under the bottle lids?
30:57This little thing helps preserve
30:59vacuum inside bottles, keeping
31:01soda in a fizzy state.
31:03You've probably watched food
31:05heating in a microwave at least
31:06once in your life.
31:08Exciting, I know!
31:09But why do the developers make the
31:11door so dark?
31:13This black film is necessary to
31:15block electromagnetic fields.
31:17Tiny dots on padlocks next to the
31:20keyhole are designed to dry out the
31:22moisture if water gets inside the
31:24lock.
31:25Also, if the lock gets jammed or
31:27starts to rust, you can pour oil into
31:29it through this hole to fix the
31:31problem.
31:32A golf ball is covered with tiny
31:35craters for good aerodynamics.
31:37They're called dimples, and this
31:39design helps the ball fly further
31:41and more evenly.
31:43Some mugs have a little groove at the
31:45outside of the bottom.
31:47It helps water flow out and prevents
31:49it from accumulating when the cup is
31:51in the dishwasher.
31:53Sunglasses were first used not to
31:55protect your eyes from the sun.
31:56They use such glasses during arctic
31:58expeditions.
32:00A huge amount of snow can blind you
32:02just like a bright flash.
32:03To save their eyes, they came up with
32:06these unique glasses.
32:08You can use any t-shirt not only for
32:10dressing, but also as a protective
32:12layer for your luggage.
32:14Just put your clothes on your suitcase
32:15as a cover and don't waste time
32:18plastic wrapping it.
32:19A button on the back of the shirt
32:21collar is there to keep your tie under
32:23the collar.
32:24Yes, people don't use it as intended
32:26because all ties are thinner now.
32:29But this button is still there as a
32:31decorative function.
32:32And here's the initial purpose of a tie.
32:35They created it in the 17th century
32:37Europe to tighten the collar.
32:39This way, people protected their necks
32:42from a strong wind.
32:43Then, they got used to this part of
32:45the outfit and made it a must-have
32:47accessory for royal gatherings.
32:49Soft pom-poms on hats were first
32:52invented several centuries ago.
32:54Sailors use them to avoid hitting their
32:56heads against low ship ceilings and
32:58ledges.
32:59They make most clothes hangers from
33:01cedar wood, since it contains many
33:03natural oils, repelling moths that
33:06love to eat your clothes.
33:08A light bulb is spherical, because such a
33:11shape allows the light to distribute
33:13evenly.
33:14Also, such light bulbs are cheaper and
33:16easier to produce.
33:18Ever found these pieces of fabric and
33:20new clothes?
33:21They're not just patches, but also
33:23testing subjects to use before washing.
33:26You can put this piece in the washing
33:28machine and see what happens to it.
33:30If everything is fine, then you can
33:32safely put your clothes in.
33:34Your ceiling fan has two modes of work,
33:37winter and summer.
33:39You need to find the switch on it.
33:40Push it up to activate the winter mode
33:43and down for the summer one.
33:45In summer mode, the fan pushes the air
33:47down.
33:48It pulls the air up in winter.
33:51Most people have this ground plunger in
33:53the bathroom.
33:54In movies, they use those to eliminate a
33:57blockage in the toilet.
33:58In fact, the plunger is to get rid of a
34:01blockage in the sink.
34:02For the toilet, you need another special
34:04device.
34:06The extra space under your oven is not for
34:09keeping pans and pots.
34:10You can put some dishes there.
34:12The heat of the stove will keep your meals
34:14warm.
34:15It's useful if you're waiting for friends
34:17late for dinner.
34:20You're taking a pack of popcorn out of a
34:23microwave after heating.
34:24See the little hole at the top of the
34:26popcorn bag?
34:27You can use it to get rid of small
34:29unpopped grains.
34:30Shake the pack over the plate and all the
34:33grains will fall out through the hole.
34:35Almost all people use a travel pillow
34:38incorrectly.
34:39Usually, they put two ends forward and lay
34:42their heads back.
34:43Try to turn the pillow on the other side.
34:45The arc should be under your chin and the
34:48two ends should be directed back.
34:50Lay your head forward and your neck will
34:52feel way more comfortable in this
34:54position.
34:55And you'll get a good nap.
34:57They create magnets in a horseshoe shape
35:00to increase their magnetic power.
35:02The blue part indicates the south pole,
35:04the red part the north one.
35:06The two poles work simultaneously and
35:09increase the attraction.
35:11Thanks to the perfect aviation design,
35:13most planes can fly a long distance
35:16even without an engine.
35:18In 1268, Roger Bacon made the first
35:21written mention on using telescope lenses
35:24for optical purposes.
35:26Magnifying lenses inserted in frames were
35:28popular for reading both in Europe and
35:31China at this time.
35:32So it's still a question if the West took
35:34it from the East or vice versa.
35:37If you find yourself in the middle of the
35:39sea without food, sorry, you can try
35:42fishing.
35:43You can use anything for bait.
35:45Your phone, watch, keys, and you can use
35:48laces as a fishing line.
35:50Tie the bait and throw it into the water.
35:52And good luck catching the fish that
35:54swallowed your phone.
35:55It's going to be a whopper.
35:58You can turn over the tab on a lid of
36:00soda cans and use it to hold a cocktail
36:02straw in place.
36:04The blue half of the eraser wasn't
36:06originally created to delete the ink.
36:09Initially, the blue part erased
36:10inscriptions and drawings on thick paper.
36:13The red part couldn't do it without
36:15leaving streets, but the blue one handled
36:17this task perfectly.
36:19Most of us tear sticking notes off
36:22incorrectly.
36:23Try not to do it from below, but from the
36:26side along the licking lawn.
36:28The paper will stick to the wall for
36:30longer this way.
36:31Ever wondered what these two holes in the
36:34lollipop stick are for?
36:35All the time, you say.
36:37Well, when they put the bar
36:39in hot syrup, the liquid
36:41flows inside.
36:42It creates a solid attachment for the
36:44plastic.
36:45And so it goes.
36:49If you ever find yourself stuck in the
36:52trunk of your car, stay calm.
36:54All cars are supposed to be equipped with
36:56an emergency latch to help open the
36:59trunk from the inside in the unlikely
37:01case it happens.
37:02These latches are so well thought out
37:04that they can be opened by people of all
37:06ages.
37:07More so, handles are designed to glow in
37:09the dark, too.
37:10You can even pull them with a mouth if
37:12there's not enough wiggle room to use
37:14your hands.
37:15Never mind how you ended up in the trunk
37:17in the first place.
37:18Moving on.
37:19If you're ever working with needle and
37:21thread, remember you don't need to stick
37:23the needle directly into the spool.
37:25You may end up losing the needle
37:27altogether.
37:28Not to mention you can easily hurt your
37:30fingers.
37:31A lot of modern sewing kits these days
37:33come with a designated place for
37:35safeguarding the needles.
37:37It's located at the bottom part of the
37:39thread spool.
37:40You'll just need to pull it out.
37:41It's even made to hold multiple sewing
37:44needles at a time.
37:46Disposable ballpoint pens come with a
37:48little secret of their own.
37:49Did you ever notice that in some of
37:51them, there's a small hole in the
37:53plastic part?
37:54It's actually a rudimentary
37:56ventilation system.
37:58It's supposed to let the ink easily
38:00make it to the tip of the pen.
38:02Okay, I know it's in the name, but you
38:04really don't need to shake the seasoning
38:06shaker to get any product out.
38:08Don't believe me?
38:09Hey, you're not the only one.
38:11Go grab your favorite seasoning bottle
38:13out of your pantry.
38:14If it has one of those removable plastic
38:17caps, it's perfect for the experiment.
38:20Instead of shaking the bottle, try holding
38:22it from the plastic cap while it's upside
38:24down.
38:25Now, gently twist the bottle from side to
38:28side and, before you know it, you get some
38:31gorgeously flowing seasoning without
38:33having to wiggle the shaker and make a
38:35mess all over the stove.
38:37On the same note, most salt and pepper
38:40shakers should have ridges on the bottom
38:42of the glass portion.
38:43In case you get any seasoning stuck in
38:46there, place the bottom of the salt
38:47shaker against the bottom of the pepper
38:49shaker and wiggle it around so the ridges
38:52click with each other.
38:53The seasoning should easily pour out now
38:56without you having to open the bottle.
38:58In colder weather, you often have so many
39:01clothing layers on you that you can
39:03hardly feel the purse or back straps on
39:05your shoulder anymore.
39:06Not to mention how fast they can slide
39:08off.
39:09Some jackets come with a built-in solution
39:11for that, in the form of a small tab on
39:14the shoulder with either a hook or a
39:16button.
39:16It's meant to be opened and closed
39:18comfortably, so you can keep your purse
39:20in place at any time.
39:23You're most likely using it merely to
39:26peel the skin of potatoes, carrots, or
39:28cucumbers.
39:29But you can use your vegetable peeler
39:31for chopping fine strips of onion as
39:33well.
39:34Just cut the onion into quarters vertically
39:36and then start slicing.
39:38This might also help out with those
39:41embarrassing onion tears.
39:43Most people miss this one, but should
39:45you ever have a closer look at your
39:47toothpaste tube, you will surely see
39:49some sort of coloring there, either a
39:52dot or a block.
39:53Colors can vary.
39:54They can be black, green, red, or even
39:57blue.
39:58These color spots are actually meant to
40:00help the assembly machines back at the
40:02toothpaste factory.
40:03They recognize when and where these
40:05machines need to cut the toothpaste
40:06tubes and proceed to fold them for
40:08packaging.
40:10For most types of footwear, if there's
40:12anything that seems a bit out of
40:13place, always know that it's there for a
40:16reason.
40:16Most manufacturers don't put extra
40:19items on shoes just for fun.
40:21It would definitely be a waste of time
40:23and resources.
40:24For footwear, like boots, for example,
40:27there's often a small loop at the top
40:29back of the shoe.
40:30It's there to help you when you need to
40:31put the shoe on, since you can quickly
40:33pull on it.
40:34Plus, you can also hang the shoes
40:36somewhere, most likely to dry, since
40:39most boots are meant to be worn in the
40:41colder weather.
40:42Now, I've been guilty at least once of
40:44overdressing with a bunch of layers, just
40:47so I won't need to jam everything in my
40:49check-in bag.
40:50But does it become a problem when you
40:52actually have to get seated?
40:54What do you do with your coat or your
40:56jacket?
40:56Well, have a closer look next time you
40:59board a plane on the seat in front of
41:01you.
41:01The hook that keeps the tray table
41:03upright can double as a jacket hook.
41:06As long as you don't need to have any
41:08meals while in the air, you're good to
41:10go.
41:11Now, most mascaras expire within three to
41:14six months, I'm told, depending on the
41:16manufacturer.
41:17But you can help speed up that process
41:19if you're not careful enough.
41:21Continuously pumping the mascara wand,
41:24trying to mix in the product, actually
41:26pushes more air into the tube.
41:28This can make it dry much faster, and you
41:30evidently won't get the desired results
41:32with it anymore.
41:34There's an easy way to check if your
41:36mascara is still good enough to use.
41:38If you don't hear a popping noise when
41:40you take the brush out, you may very
41:42well need to go get yourself a new
41:44mascara tube.
41:46Now, I know we're living in the era of
41:49Bluetooth-connected devices, but for
41:51better quality sound, they still
41:53recommend using headphones that connect
41:55via audio jacks.
41:57Remember seeing black ridges on those
41:59jacks?
41:59They aren't there just to make them fit
42:01when you plug them into your phone or
42:03laptop.
42:04Made out of a special insulating
42:06material, these bands are meant to guard
42:08the wires when sound is being
42:10transmitted.
42:11Based on the number of bands, you can
42:13figure out which end goes where.
42:15Some empty space under noodles in a
42:18cup doesn't mean the company producing
42:19them wants to cheat you out of a full
42:21portion.
42:22No, no.
42:23It's a manner of keeping the noodles
42:25intact during their transportation.
42:27It also helps with the circulation of hot
42:29water that is poured over the products
42:31before you can enjoy them.
42:33The V-shaped neckline was initially
42:36designed to serve a bunch of
42:37objectives. First, as a way of prolonging
42:40the life of the garment that would
42:41maintain its shape over the years.
42:43It's also there to fit your head
42:45through the shirt in case it needs some
42:47stretching. This way, it ensures a
42:49snugger grip around the neck.
42:51Lastly, it helps absorb sweat in case
42:54you're wearing the shirt while
42:55exercising.
42:56Now, it's not necessarily a custom
42:58anymore, but you may have stumbled upon
43:01a dinner jacket with an additional
43:03mysterious pocket on the right side.
43:05Turns out, this pocket was used by men to
43:08easily reach their train tickets, since
43:11most of them had to travel to work every
43:13day. It helped them keep their jacket
43:15buttoned up, but also benefited from the
43:17use of a pocket. Now, it's only added as a
43:20decoration, and it doesn't serve an actual
43:23purpose anymore.
43:24Speaking of things we don't use these
43:26days, or at least for their initial
43:28purpose, did you know Play-Doh was
43:30originally a cleaning product?
43:32In the 1920s, the market was in need of a
43:35product that could help them wipe the
43:37wallpapered areas around coal-burning
43:40furnaces. The recipe for what we now know
43:43as Play-Doh was thus invented. It was
43:45manufactured in white only, and was
43:48supposed to clean wallpaper by being
43:50rolled back and forth over the dirt. It
43:52was only later, in the 1940s, that new
43:55products for cleaning wallpaper were
43:57brought up, and Play-Doh was redirected
44:00toward another area of the market. Now,
44:03while I enjoy a nice piece of toast for
44:05breakfast, isn't it pesky to have to
44:08clean out the toaster? Well, not anymore,
44:10since I recently found out that toasters
44:13have a slide or a panel at the bottom that
44:16helps get rid of all those annoying
44:17breadcrumbs easily.
44:22Now, there used to be a time when you
44:24could only have access to video games by
44:26inserting cartridges in your console of
44:28choice. These tiny objects gave many
44:31doctors a lot of headaches. People soon
44:34started popping up in hospitals after
44:36swallowing small game cartridges,
44:39especially the younger generation.
44:41Nintendo, the company that manufactures
44:43the majority of these devices, had to
44:45come up with a creative solution to
44:47prevent these accidents. So, these days,
44:50Nintendo Switch cartridges are purposely
44:52coated with specific chemicals that can
44:55leave a really bad bitter taste in the
44:57mouth. Not that I'd, you know, recommend
44:59you ever try and taste for yourself.
45:04What's hiding inside Coca-Cola cans and
45:06regular household batteries? Why do magnets
45:09affect breakfast cereals? Do crosswalk
45:13buttons actually work or are they just
45:14useless decorations? What does that USB
45:18symbol really mean? I'm not sure I know the
45:22answers to these and similar questions, but
45:25I'm eager to learn the truth together with
45:27you. Let's find it out.
45:29Coca-Cola cans have a secret few people
45:31know about. Here's a Coke can. Let's
45:35submerge it in a highly corrosive alkaline
45:37solution. The aluminum dissolves due to a
45:40process known as hydrolysis and we can see a
45:43plastic liner inside the can. It's made
45:46from a polymer or epoxy resin and serves as
45:49some kind of a protective barrier between the
45:51aluminum walls of the can and the rather acidic
45:54soda. Despite a popular myth, household
45:59batteries don't actually contain liquid and if
46:01you accidentally cut them open, no toxic liquid
46:04will spill. Most of them are dry cell batteries
46:07which are made of electrochemical cells. Those
46:10convert chemical energy into electrical energy. Larger
46:14batteries often house numerous small cells
46:16within them, too. Even Tesla vehicle batteries
46:19consist of multiple small cells. When combined, they
46:22easily provide the necessary voltage.
46:27Most toothbrushes have differently colored bristles, but
46:30they aren't just pleasing to the eye. Those bristles
46:33often blue have a functional purpose. They're called
46:36toothbrush indicators and their colors fade as you use
46:39the brush. The American Dental Association recommends
46:43changing your toothbrush at least four times a year. And
46:46by getting paler, these bristles help you figure out
46:49when it's time to replace your toothbrush.
46:52You'll probably agree that there's no better snack than a
46:54pack of chips. Some are flat, others have ridges. Is it
46:59just aesthetics? Not really. The main purpose of those
47:03lines on some kinds of chips is to help with the
47:05distribution of spices and seasonings. In other words, all
47:09those substances that make your chips taste like cheese are
47:11mostly stored inside the lines. Plus, the lines make chips
47:15crunchier.
47:18Now, this one might be a surprise, but some breakfast
47:21cereals are magnetic. That's because they're often
47:24fortified with iron in the form of a fine powder. Due to
47:28the added iron, cereal flakes get attracted to magnets. All
47:32this may sound kinda alarming, but in reality, the iron
47:35content in the flakes is minimal and doesn't pose any threat to
47:38your health. That clear fluid in gel pens is called the ink
47:42follower or stopper fluid. The gel in such pens contains pigment
47:47particles dissolved in a polymer solution. The main task of the
47:51stopper fluid is to be a barrier to prevent the gel from
47:54evaporating or leaking out. Without this transparent fluid, your
47:58gel pen wouldn't function. The fluid always stays in one
48:03position and doesn't get dissolved with the gel. Neither does it
48:06move backwards or flow out of the pen.
48:10Many pedestrian crosswalk buttons, namely in New York, are
48:14placebo buttons. They do literally nothing when you press them.
48:18Originally, they were functional after being introduced in
48:211964, but today, most of them don't affect traffic lights, which
48:25are programmed based on the real needs of the traffic flow.
48:29Why do such buttons even exist then? It's a simple psychological
48:33trick, providing you with an illusion of control.
48:37You might have noticed that movie theater seats are almost always
48:41red. This choice isn't random. It has strategic importance, which is
48:46rooted in visual science. The thing is, red light has a longer
48:50wavelength. It means that it's the first color to disappear in low
48:53light. It allows the audience to concentrate better on the screen once
48:57the movie begins. Such a design choice enhances the viewing experience by
49:01minimizing distractions.
49:04Speed bumps are crucial for pedestrian safety, but at the same time, they can
49:09seriously increase car emissions due to the non-stop acceleration and
49:13deceleration they cause.
49:16To address this issue, some cities like London are testing fake speed bumps.
49:20Those are optical illusions painted on the road. They look raised from a driver's
49:25perspective, but in reality, they're flat. Authorities hope that this approach will
49:30slow down drivers without having a negative impact on the environment.
49:36Soda bottles are always filled in such a way that there's some space between the
49:40liquid and the cap. That's because soda contains carbon dioxide.
49:44It's a gas that can expand once the bottle is heated. If there's no gap in the bottle,
49:49it can break because of the pressure building inside.
49:53Also, when you open your drink, the gases go out in the form of bubbles,
49:57making the drink overflow. The gap helps with this problem too.
50:03The USB symbol. Looking like a trident has always sparked multiple speculations about its origin.
50:10One popular idea is that it represents Neptune's trident and symbolizes power and adaptability.
50:16But there's also a little bit less exciting theory. A man who claimed to have designed the symbol in
50:22the 1980s stated that it was supposed to represent connectivity. The large circle symbolizes a computer,
50:29while the attached shapes, the circle, the triangle and square, stand for different outputs.
50:36The design of a tennis racket has a specific feature known as the throat. It's an open space
50:42below the head of the racket. This space isn't just for storing balls, it also improves the racket's
50:48aerodynamics by letting air pass through. It seriously reduces drag during swings.
50:55Speaking of tennis, tennis courts are usually built with a north-south orientation. It helps minimize the
51:02impact of the sun's position during the game, ensuring that neither player has the sun directly in their eyes.
51:09Look closely at a tram's overhead lines, and you'll see that its contact wires zigzag back and forth
51:16instead of going in a straight line. That's because all trams have pantographs attached to their roofs.
51:22The upper part of the pantograph is gradually worn down by the overhead wire and eventually needs to
51:28be replaced. To wear it down evenly, the wire is not installed strictly along the tram's path,
51:34but in zigzag patterns. As the tram moves, the pantograph slides along the wire, and it wears down evenly.
51:44Those cone-shaped water cooler cups? Their shape is intentionally designed to prevent users from
51:50setting the cups down. This allows employees to minimize the risk of spilling water on their desks
51:56around various electronic devices. Plus, less material is used to produce cone-shaped cups, which makes the
52:02process less wasteful and more cost-effective. It also kind of supports sustainability by encouraging
52:09people to drink their water quickly and dispose of their cups immediately after.
52:15Most suitcases have two zipper pulls, and it serves several purposes. First of all, if one zipper fails,
52:23the other can keep the suitcase closed. Even better, having two zippers allows you to have easier access to
52:29small sections of your suitcase without having to open it entirely. And finally, when you have two
52:36zippers, you can connect them with a padlock for increased security.
52:42Some plastic milk containers have dents on their sides. These dents serve several purposes. When milk
52:49spoils, it usually causes swelling and high-pressure buildup inside the container. That's when the dent pops
52:54out and doesn't let the jug blow up. Plus, if you decide to freeze the milk, it will expand like
53:01any
53:01other fluid. And then again, the indentation will pop out and prevent the container from breaking inside
53:07your freezer. If you ever had a problem figuring out why fake pockets exist, you need to hear this.
53:16The main reason is that if a clothing item has a specific cut or shape, pockets may spoil it.
53:22They can alter the item's shape either in the warehouse or already on the retail rack. The solution?
53:29Getting rid of the pockets in key areas. Plus, fake pockets are obviously cheaper,
53:34and they don't get stretched out. The thermos wasn't actually invented to keep your coffee warm.
53:42It was made by a Scottish scientist who wanted a safe place to keep his chemicals at a stable temperature.
53:48So, he took two bottles, put the smaller one inside the bigger bottle, and vacuumed out the air between them.
53:54It wasn't much repaired.
53:58You
Comments