The 500Er offers all users a smooth elliptical motion and full body workout with features to enhance the experience.

The micrometer devised by William Gascoigne proved Johannes Kepler's theories of elliptical planetary motion.

Your feet move in a natural elliptical motion, providing a no-impact workout for less stress on the joints.

Newton first arrived at the inverse square law of attraction by considering the elliptical motion of a point planet around a stationary point sun.

This much improved mechanism gave a proper elliptical motion and was used until 1988.

This gave the shoe a proper elliptical motion.

Generally it contains two tracks upon which the user stands; when he or she moves his or her legs, they describe an elliptical motion (hence the machine name).

The ami requires the dancer to rotate his or her hips in an elliptical motion while keeping both feet firmly planted on the ground.

A centripetal force of this form causes the elliptical motion.

The variational distortion of the Moon's orbit is a different effect from the eccentric elliptical motion of a body in an unperturbed orbit.