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Secret Reasons You Don't Know About Everyday Things

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Jan 28, 2017

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Secret Reasons You Don't Know About Everyday Things
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  • - [Narrator] From the same expiry date on all crisps
  • to why snorkels aren't as long as you'd like them to be,
  • here are ten more hidden secrets in everyday things.
  • - Amazing!
  • (peaceful music)
  • - [Narrator] Number ten: Sign on the Line or Not.
  • When signing a check,
  • you may think you're signing on the signature line,
  • but if you get a magnifying glass and look very closely
  • at that line, it is actually made up of repeating print
  • which says AUTHORIZEDSIGNATURE over and over.
  • The print is so small,
  • it appears to be a regular straight line at first glance,
  • but if you look carefully you should be able to make it out.
  • This is done as a security feature,
  • technically called microprinting,
  • where the print is so small that if photocopied,
  • it becomes an actual blurry line.
  • So if you want to check if your check is real,
  • squint at the line where you sign.
  • Number nine: Blank Pages.
  • If you're an avid reader of paper books,
  • you may have noticed there are often
  • blank pages at the end of the book.
  • Why are they there?
  • No, it's not so you can freeform your thoughts
  • before typing out your actual Amazon review of the novel.
  • Books are made up of digitally printed
  • and folded sheets of paper called signatures.
  • They're all bound together, attached to a cover,
  • and that makes up your book.
  • Digitally printed signatures can be anywhere
  • from two to 48 pages, depending on the press.
  • Sometimes, the text ends before
  • the last page of the last signature.
  • This is how large publishers print books,
  • but print on demand services for
  • self-published authors may be different,
  • printing several pages on one large piece of paper
  • which is later cut.
  • In this case, you may have fewer pages
  • than would fit on the large printing sheet
  • and you get some blank pages.
  • Number eight: Tram/Train Criss-Crossing Overhead Line.
  • While riding the tram, you may look up and notice
  • its criss-crossing overhead lines.
  • Are they designed that way to remind you of a 90s rap song?
  • No, there's a functional reason
  • for the criss-cross pattern called the sweep.
  • Trams and some trains run on a pantograph catenary system
  • where the electricity is transferred
  • from the catenary wire to the locomotive.
  • The sliding strip creates the electrical contact
  • to the catenary wire, while the pantograph spring system
  • maintains permanent contact at any speed.
  • The wear and tear from the sliding strip
  • touching the copper wires can cause erosion on the pylons.
  • The actual reason for the criss-crossing lines
  • is to spread the erosion and wear evenly
  • along the contact strips, preventing grooves
  • from developing so they can last longer.
  • Number seven: Snorkels.
  • You may know that snorkels allow people to breathe
  • while swimming underwater.
  • Unlike scuba equipment, which requires an air tank,
  • snorkels stick up out of water
  • allowing the wearer to breathe air from the atmosphere.
  • Most snorkels are about 30 centimeters long,
  • and none are longer than 40 centimeters.
  • Naturally, this limits a person
  • to stay close to the surface.
  • Wouldn't a longer design be more convenient?
  • No, actually it wouldn't,
  • and this is why they aren't that long.
  • In deeper water, the surrounding water pressure is higher.
  • Your lungs would be unable to inflate
  • when the snorkeler inhales because the
  • muscles that expand the lungs are not strong enough
  • to operate against the higher pressure.
  • This problematic pressure difference
  • across the tissues in the lungs
  • between the blood capillaries and airspaces
  • would increase the risk of pulmonary edema.
  • Using a snorkel also causes wearers
  • to re-inhale some carbon dioxide,
  • and a smaller tube reduces the problem.
  • The reason scuba divers can breathe, though,
  • is because they carry their own source of breathing gas,
  • usually compressed air, and don't rely on
  • breathing air under pressure from the surface.
  • So stick with your 30 centimeter snorkel.
  • The idea for a longer one is all wet.
  • Number six: In N Out Burgers' Bible Verses.
  • Many people enjoy In N Out Burgers,
  • and some have noticed their burger wrappers, fry containers,
  • and cups contain tiny notations in strange places,
  • like the underside of cups
  • or near the seam of the burger or fry pouch.
  • They're easy to overlook,
  • but some sharp-eyed consumers have noticed them.
  • If you look closely and have studied a Bible,
  • you may realize these notations refer to Bible passages.
  • For example, John 3:16 or Proverbs 3:5.
  • Some believe a conspiracy is afoot,
  • that In N Out represents a sect or cult,
  • or that they hold secret Bible study classes
  • at their location, but most people don't even notice
  • these notations and the actual Bible verses
  • don't appear on the wrappers
  • so as far as conspiracies go it doesn't hold water.
  • Fortunately, your cup does.
  • In reality, the practice began in the '80s,
  • and simply represents the Christian beliefs
  • of the Snyder family, who started In N Out
  • and still own most of the company.
  • Number five: Incandescent Light Bulbs.
  • Light bulbs light up our lives,
  • but have you ever wondered about their shape?
  • Often hidden under a lampshade,
  • they could be shaped like anything,
  • but the bulb has a round shape that tapers down to the base.
  • This was chosen when light bulbs were first developed
  • because it was easily made by glass blowers.
  • The spherical design is also ideal for
  • controlling heat and light emissions.
  • Lately, these have been replaced by the newer,
  • more efficient spiral-shaped bulbs,
  • but sometimes even that design
  • is hidden inside a spherical bulb.
  • A bright idea in design.
  • Number four: Toothpaste Stripes.
  • This one might come as a surprise.
  • Multi-colored stripes on toothpaste were first introduced
  • to the oral hygiene market by Aquafresh in 1973
  • when it entered the toothpaste market.
  • Although insanely simple,
  • this product development was pretty ingenious.
  • Back then, there was a growing awareness and interest in
  • having a toothpaste that not only prevents decay,
  • but also promotes fresh breath.
  • In order to capitalize on this,
  • toothpaste brands like Aquafresh
  • divided their toothpaste up with different colors
  • to represent the benefits of its product.
  • It originally had two colors for double protection,
  • by combining a white fluoride toothpaste
  • for cavity and decay protection
  • and a blue Aquagel for fresh breath.
  • Later, a third red gel was added for
  • healthy gums and plaque prevention.
  • As such, they now exist as a way to illustrate
  • the product's core benefits.
  • You may be thinking it's rather obvious,
  • but here's the secret of this one.
  • Most non-striped toothpaste offered
  • the exact same hygienic benefits.
  • Striped toothpaste isn't necessarily special.
  • In fact the only thing that's special is us,
  • because we think we think we're getting a lot more than
  • other standard white brands.
  • In reality, all's that happened is that companies
  • have differentiated their products to
  • match our strange preferences because research
  • has just shown that most buyers now
  • prefer the stripey variety over the plain old white product.
  • Number three: McFlurry Spoon Hollow Bottom.
  • If you enjoy McDonald's McFlurrys,
  • you may have thought the hole at the end of
  • the McFlurry spoon was meant to be used as a straw.
  • Makes sense, right?
  • As the McFlurry melts,
  • you can easily enjoy it as a milkshake,
  • but that's not the reason for the hole in the spoon.
  • When the McDonald's worker makes your McFlurry,
  • they put ice cream in the cup,
  • add the candy or cookies,
  • then place it in a machine that automatically stirs it
  • with the spoon that comes with it.
  • The hole on the end allows the spoon to attach to the
  • machine so your McFlurry can go through
  • an appropriate blizzard of stirring before you consume it.
  • Number two: Walkers Crisps.
  • Most consumers are so eager to tear the bag of Walkers
  • Crisps open, they don't pay much attention to the date,
  • but some discerning people have noticed that the bags
  • always go out of date on a Saturday,
  • a little inconvenient if you consistently pay out
  • on Walker's chips only on Sundays.
  • So, does the flavor take a holiday
  • on Saturday night or what?
  • It turns out the reason is because of Walker's production
  • schedule, which starts on a Sunday,
  • so all bags will have an expiration date on Saturday.
  • However, many of us know chips usually taste okay
  • for a few days after that date,
  • so don't be too worried about that date.
  • Number one: Who Killed the King of Hearts?
  • If you've ever been bored during a card game,
  • you might have pondered at the design of the cards.
  • Some people have noticed the King of hearts
  • actually has a sword stuck in his head,
  • or at least that's how it appears on the card.
  • If you look at the top of the card,
  • you might think he's stabbing himself in the head,
  • and that may be consistent with the fact that
  • the card is thought to be based on
  • Francis King Charlemagne, who is rumored to have gone insane
  • and put a sword through his head,
  • hence the term suicide king.
  • However, looking further down we can see
  • both his hands are accounted for,
  • so the hand holding the sword belongs to someone else.
  • Is this a case of lovers' quarrel
  • with the Queen of hearts maybe?
  • Actually, some people believe it's the Queen of spades,
  • but if you look carefully at her sleeve
  • the pattern is similar but not exactly the same.
  • The Jack of hearts is another suspect,
  • although his sleeves aren't shown,
  • but his clothes have a similar pattern.
  • In truth, the sword actually appears
  • to be going into the king's head due to
  • poor card copying over the years.
  • The earliest forms of the card featured an ax head,
  • which disappeared after several generations
  • of inexact copying.
  • If you were interested about the fact
  • about the King of hearts,
  • then you should watch this video.
  • It has another hidden secret on the card
  • you might not have noticed.

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Description

There are so many secrets about everyday objects you probably haven't thought about that you don't know. From why all crisps have the same expiry date to why snorkels aren't as long as you'd like them to be, here are 10 more hidden secrets in everyday things.
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George Street Shuffle by Kevin MacLeod (incompetech.com) is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/)

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