Using boiling water to produce mechanical motion goes back about 2,000 years, but early devices were not practical.

He had been working on a device to produce perpetual motion.

Thus from childhood to death the individual's conduct was determined by the obligation to produce as much motion as possible.

The others, it is true, make things collect together somehow before they try to produce motion and separation.

It was rounded slightly and would have been very flexible with a broad sweep producing forward motion.

Raw energy powered the rotation of wheels or produced linear motion directly.

This type of engine can be used to move heavy loads or produce motion.

"In all cases, it was easy to find simulations that produced supersonic motion," the scientists wrote.

This was probably the first successful application of the crank to a steam engine in order to produce rotary motion.

Most often, when the purpose of the muscle activity is to produce motion, the heat is wasted energy.