Ball-and-disk integrator
= Ball-and-disk integrator
{wiki=Ball-and-disk_integrator}
The Ball-and-Disk Integrator is a mechanical device used for educational purposes to illustrate the principles of integration in calculus. It typically consists of a ball that rolls along a curved surface, most often represented by a rotating disk. The device is designed to demonstrate how the area under a curve can be approximated by the path traced by the ball as it rolls.