• JavaScript graphic example: Archimedes spiral


    1. Archimedes spiral Archimedes spiral is also known as “constant velocity spiral”. When a point P moves along the moving ray OP at the same speed, the ray rotates around the point o at the same angular speed. The trajectory of point P is called “Archimedean spiral”. The Cartesian coordinate equation of Archimedes spiral is […]

  • JavaScript animation example: helix


    There are all kinds of poetic curves in mathematics, and helix is a special one. The term helix comes from Greek, which means “helix”“Convolution”or“Winding”. For example, a plane spiral is a curve that starts at a fixed point and turns outward one by one. More than 2000 years ago, Archimedes, an ancient Greek mathematician, studied […]