11. Matches
Although there were some previous discoveries in 18th and early 19th century with flammable substances that busted into flames when mixed, John Walker is known as the inventor of modern like matches. It was in 1826 when he was experimenting with these substances, and he realized that a wooden stick which was dipped in the mixture burst into flames when he accidentally rubbed it on the high friction surface.
And now, let’s see the top ten accidental discoveries that changed the world.