Louis Braille, the Braille Reading - 15 years old

Louis Braille is the second young French inventor to make our list.

As a child, Braille was accidentally blinded. After moving to Paris to attend a school for the visually impaired, he found they had books that allowed the students to use their hands to touch large raised words on the page as a means for them to read.

Braille decided to create a better system using raised dots instead of raised letters. The language of Braille has since become the tactile writing system used by the blind and the visually impaired around the world.