Braces were first invented by Pierre Fauchard in 1728. The braces were made by a flat strip of metal, which was connected to the teeth by thread.

Each nostril of a human being register smell in a different way. Smells that are made from the right nostril are more pleasant than the left. However, smells can be detected more accurately when made by the left nostril.

Two very popular and common objects have the same function, but one has thousands of moving parts, while the other has absolutely no moving parts - an hourglass and a sundial.

AMAZING FACTS