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12 Everyday Things You Never Knew Had A Purpose

May 16, 2017
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This cylinder on every laptop cable


 

Those little cylinder-shaped lumps are ferrite cores or chokes, and they're essentially just chunks of magnetic iron oxide that are there to suppress high-frequency electromagnetic interference.

 

The little bumps on the "F" and "J" keys


 

These bumps are used to help you find your way around the keyboard when touch typing.

 

Studs on jeans seams


 

They are originally used to strengthen the seams to support the stress being put on them by miners who used to wear them to work.

 

And that small jeans pocket?

Back in the day, the pocket was used to keep a watch, a lighter or some coins and gold.

 

The connective part in chopsticks 


 

This connection exists only in disposable sticks and is used to signify that they are yet to be used. 

 

The loop on the back of dress shirts


 

Today it is entirely decorative, but it used to be used to hang shirts.

 

Little holes in airplane windows


 

The hole helps compensate for the difference in air pressure between the outside and inside of the plane.

 

The hole in pen lids

 

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That hole is actually there to prevent children from suffocating upon swallowing it, the tiny hole ensures air supply is maintained.

 

The hole in your pasta spoon

 

Besides letting water fall through, the hole is put there by the manufacturer to help you measure out one serving of pasta.

 

The holes in your Converse All-Stars


 

Besides ventilation, the holes were used by basketball players to tighten up the shoe by looping laces through the holes. 

 

The blue side of the eraser

 

The rough blue side of the eraser can remove pen ink, but only if the paper is thick enough to handle it.

 

This pin hole on your smartphone

 

It's just the microphone hole for the back camera.

 

 

 

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