History of Perpetual Motion Machines - History

History

Kinds of perpetual motion machines

  • Perpetuum Mobile of Villard de Honnecourt (about 1230).

  • 15th century wheel by Taccola.

  • Orffyreus' Das Mersseburgische Perpetuum Mobile.

  • Boyle's perpetual motion scheme

two types of perpetual motion machines:

  • Perpetual motion machines of the first kind are those devices that violate the first law of thermodynamics, the principle of conservation of energy, creating energy out of nothing. Most attempts fall into this category.
  • Perpetual motion machines of the second kind are devices that violate the second law of thermodynamics. Even though they obey the principle of conservation of energy, they attempt extraction of work from a single heat reservoir, violating the principle of no entropy decrease in an isolated macroscopic thermodynamic system.
For more details on this topic, see Perpetual motion classification.

Read more about this topic:  History Of Perpetual Motion Machines

Famous quotes containing the word history:

    “Hence poetry is something more philosophic and of graver import than history, since its statements are rather of the nature of universals, whereas those of history are singulars.”
    —Aristotle (384–322 B.C.)

    “The principal office of history I take to be this: to prevent virtuous actions from being forgotten, and that evil words and deeds should fear an infamous reputation with posterity.”
    —Tacitus (c. 55–c. 120)

    ““And now this is the way in which the history of your former life has reached my ears!” As he said this he held out in his hand the fatal letter.”
    —Anthony Trollope (1815–1882)