5 Amazing Secrets of Everyday Things You Probably Didn’t Know Existed

We are so used to seeing certain everyday things that we just don’t pay attention to details. But very often the most ingenious ideas or fascinating stories are hidden behind some unremarkable features.
Who killed the King?

In the standard French deck of cards, the King of Hearts is depicted rather strangely. He’s the only king without a mustache, and, moreover, he’s the only king who appears to be sticking his sword into his head. There are several theories in this regard.
The first hypothesis suggests that originally, the King of Hearts wielded an ax in his left hand. However, as a result of centuries of bad copying by card makers, the king’s ax has disappeared, and it has become more like a sword.
Another theory claims that the King of Hearts represents the emotionally disturbed Charles VII (King of France). According to popular belief, the King went insane and put a sword through his head from fear of being poisoned.
Some historians also argue that the King of Hearts represents Ajax the Great, while the Queen of Hearts is Helen of Troy, the most beautiful woman in the world. Ajax was one of the suitors of Helen. But when the woman refused him, he chose to commit suicide by stabbing himself with his own sword.
Open jar symbols on cosmetic packaging

The little open jar icon is the PAO (Period After Opening) symbol that informs consumers of the determined period of time a product may be used after opening without any harm to the consumer.
This symbol, featuring a number followed by the letter “M” (months), can be seen on almost all cosmetic products. This number inside the jar graphic tells you how long the product will stay good after the package is unsealed.
The Statue of Liberty’s crown

Everyone has seen the Statue of Liberty either in person or in pictures. However, only a few people know that the seven spikes on the crown of this statue represent the seven oceans and the seven continents of the world, indicating the universal concept of liberty. And one more interesting fact: each spike weighs exactly 150 pounds.
Blank pages in books

You have probably noticed that many books have a few blank pages at the beginning and/or end. Why are they there?
Book pages are often printed on large sheets of paper rather than on small individual ones. That’s why if there isn’t enough content to fill these large sheets, there will be blank pages. Publishers often print the word “Notes” or leave some other sign on them so that readers don’t think they’ve encountered a publishing mistake.
Colorful toothpaste

Have you ever wondered why classic toothpaste has stripes of three colors: white, blue, and red? It turns out that each stripe has different ingredients and purposes.
Fluoride (white component) is the most valuable ingredient in toothpaste, containing substances that whiten the teeth and remove plaque.
Blue (or green) aqua gel has antimicrobial and breath-freshening effects.
Red gel was added later. It contains some crucial elements for healthy gums.
In fact, dividing the toothpaste up with different colors isn’t necessary. It’s just a clever marketing strategy.