1. PAscal
... at mathematics and science, which enabled him to help his father with scientific gatherings. By the time he was seventeen he wrote an essay on conic sections, which is, a work in projective geometry that contained a theorem on conic sections that was named after him. At the age of eighteen Pascal invented the adding machine, which is now known as the calculator. Pascal ... ...
- Word Count: 598
- Approx Pages: 2
- Grade Level: High School