Mini Mathematics Bio - Rene Descartes.

The French genius was maybe not a very beautiful man. But he actually helped the development of technology and science in a big style. Nutrition. As an example, we owe Descartes the following crucial idea : The position of any point on an aircraft can be described totally if we all know its distance to the X and Y axes. And to find that distance, its enough to draw 2 vertical lines from the point, one to the X axis and the other to the Y axis. His definition was later on exploited by other great mathematicians of his time like Fermat, Maclaurin and Lagrange.