Things You Don’t Know The Purpose Of

September 20, 2019

– [Narrator] Would you
believe me if I told you that everyday, you unknowingly
see hundreds of things which have peculiar purposes, that you’ve never paid attention to? Well, get ready to be amazed
by these everyday design quirks that you most likely
never had a clue about. – Amazing. – [Narrator] Number 10,
power cable cylinders. Most people see it everyday,
and have no idea what it’s for. You may have assumed it’s for decoration, but it’s never exactly been
an eye-catching object, so think again. It’s actually called a ferrite bead, and it suppresses high-frequency noise in the electrical circuit, basically reducing
interference in the cable. It’s a cheap and effective
filter that’s rather simple as it’s just made from ferrite with the wire wrapped inside it. Number nine, wine bottle dimple. The correct term for
this dimple is the punt, and it wasn’t actually
originally made on purpose. You may have seen people
putting their thumb into it while pouring wine, but that’s just one of its many purposes. It’s actually a remnant from
the art of glass blowing. In order for the glass to stand up, its bottom has to be flat. But this is no easy task when
you’re working with glass. The easiest way to achieve a
flat base is to push the bottom inside, creating an
indent and a flat surface. Additionally, it also
comes in extremely handy when the bottle contains
sparkling liquid like champaign. It helps to equalize and
distribute the internal pressure from the sparkles more
smoothly by dissipating it from the sides to the
bottom of the bottle. In other words, without this punt, the bottle might simply explode. Number eight, loop on the back of a shirt. You can probably take a good guess as to what this shirt loop is for, and for most people it
sounds logical to assume it’s simply for hanging shirts on a hook. This is indeed one purpose, which has been traced
back to East Coast sailors who hung their shirts up while changing. The trend then eventually
made its way to high-street retailers, and in the 60s,
they were used by men to hang their clothes neatly inside
gym locker rooms, hence back then, they were called locker loops. But they weren’t limited to this. At one point, they had a
bit of social significance, and became part of Ivy
League dating culture. University students were
said to remove the loop from the shirt when they started
dating a girl exclusively. Basically, like an
old-school promise ring. Now that wardrobes and closets exist, they are somewhat redundant, and remain mostly for decoration. Number seven, little hole on a padlock. Many padlocks have round
holes next to the keyhole. The first use of this hole
is a means of lubrication so that you can pour
in oil to the mechanism in case it gets stuck. Secondly, it works as
a drain in case water, or other residue, makes
its way inside the lock. For example, after rain. Padlocks without this hole
are typically only meant for use indoors, or will be
made of rust-proof materials. Number six, blue eraser. Most people think that
the different colors can erase different types of writing, with the pink being able to erase pencil, while the blue erases ink. If like me you’ve ever
put this to the test, then you’ll have realized
that neither side can erase pen very well, often erasing the pen by
tearing a hole in your work. The blue gritted side is
actually used to erase pencil on heavier weights of paper, whereas the pink side would
struggle to erase pencil on these surfaces. The blue part also comes
in hand when the pink part leaves behind smudges. It’s designed to erase these smudges. Even if you’ve actually seen
text or graphics indicating that the blue part is for erasing ink, then this is just the marketing gimmick. After an eraser company started to realize that few people knew its real purpose, they started marketing it as a pen eraser, despite the fact that this
wasn’t its original purpose. Number five, the hole
in a spaghetti spoon. All spaghetti spoons have
a hole in the bottom, and the most obvious purpose
you’d probably think of behind it is so that the water drains when you pick up or stir the spaghetti. This isn’t the actual reason,
though, because it’s actually meant to be used to measure out
an equal amount of spaghetti for one serving. So instead of simply throwing
a bunch of spaghetti noodles into a boiling pot of water
and hoping it’s enough, you can now be sure you’re
cooking the right amount, all thanks to this handy hole. Number four, tire bumps. These little bumps between
your tire treads may seem like a manufacturing
defect, but in actuality, like everything in this video, they are thoroughly
thought-out design details. These relieved rectangles
actually mark the minimum safe tread height of your tire. In order for your car to be roadworthy, you must have enough tread
on the tire of your vehicle, or it will be considered
too dangerous to drive. And in most countries like the US and UK, you’re breaking the law
if they look like this . Number three, metal strips on gas pumps. Have you ever wondered
why these rubbery gas pump wires turn into metal at the top? Well, the reason behind this one, is impart due to human stupidity. They ensure that when you
drive away like an idiot with the hose still in your car, you don’t just destroy the pump. You see, these are just
magnetic breakaways, which make sure that you only
drag away the rubbery wire, instead of the whole damn gas station. Number two, toothpaste colored squares. Online tales have been trying
to explain these squares for several years, but they
do no represent the chemical content of the product, like
most are led to believe. In fact, the toothpaste colored
codes are actually known as color marks, or eye
marks, which are articles of the manufacturing process. They indicate whether the
packet can either be folded or cut as interlocking units
stream through machinery at high speeds. These markings can be seen
using laser beams at high speeds and aren’t actually meant
to help you determine which toothpaste you should buy. If you’ve been buying green for it being the natural
variety, then unlucky, because the information
under the ingredients is where you should really be
looking for such information. Number one, plane window holes. The purpose of these
little holes in the windows relates to one of the main challenges behind aircraft engineering, air pressure. At cruising altitudes,
the atmospheric pressure is far too low for
humans to stay conscious, so airplanes need to be pressurized. In order to do this, the
pressure between the outside and inside of the aircraft must equalize, and this is where that
little hole comes in handy. Airplane windows are typically
made from three super strong layers of synthetic
resin, or acrylic perspex, that is basically just plastic glass. The hole, which is officially
called a breather hole, usually resides in the middle pane and acts as a bleed valve, allowing air pressure to
equalize between the outer and middle pane, leaving the
stronger outer pane of glass baring the pressure. In the extremely rare
case that the outer pane breaks or cracks, the middle pane is there
to take the pressure. So it may seem like a
tiny fault, but really, it’s just an important life-saving detail. Were you surprised by any of these things? Let us know in the comments below. Thanks for watching, and
subscribe to be amazed.

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