Secrets Hidden in Everyday Things You Never Knew Existed




Have you ever wondered why snorkels aren’t as long as you’d like them to be? Or why there are blank pages at the end of a book?

From the same expiry date on all crisps to the criss-crossing overhead lines on trams and trains, here are ten more hidden secrets in everyday things that you may not have known.

Sign on the Line or Not

When signing a check, you may think you’re signing on the signature line, but if you take a closer look, it’s actually made up of microprinting which says “AUTHORIZED SIGNATURE” over and over again.


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. The reason for this is that books are made up of digitally printed and folded sheets of paper called signatures.


Tram/Train Criss-Crossing Overhead Line

Trams and some trains run on a pantograph catenary system where the electricity is transferred from the catenary wire to the locomotive.



In deeper water, the surrounding water pressure is higher, and your lungs would be unable to inflate. A smaller tube reduces the problem of re-inhaling carbon dioxide and the risk of pulmonary edema.


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