Perpetual Motion

Some independent research from one of our RGS Physics pupils:

Perpetual motion is the action, that once set in motion will continue to motion forever, with no additional energy required to maintain it. Such devices are impossible on grounds stated by the first and second laws of thermodynamics. perpetual motion promises a free and limitless source of power, although is impossible to produce.

The first law of thermodynamics states In any isolated system, one cannot create new energy, or is a statement of conservation of energy.The second law states the entropy of an isolated system will never decrease.

In other words:

  1. In any isolated system, you cannot create new energy (first law of thermodynamics)
  2. The output power of heat engines is always smaller than the input heating power.


Robert Fludd was the inventor of the first “water screw” Perpetual Motion Machine which he intended for it to produce useful work without using energy. This was invented in 1618 and was the first recorded attempt at producing useful work, thus proving the existence of perpetual motion. Although the machine would not work, the idea was that water from the top tank turns a water wheel, which drives a complicated series of gears and shafts that ultimately rotate the Archimedes Screw to pump water to refill the tank. The rotary motion of the water wheel also drives two grinding wheels and is shown as providing sufficient excess water to lubricate them.

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