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:

    “Racism is an ism to which everyone in the world today is exposed; for or against, we must take sides. And the history of the future will differ according to the decision which we make.”
    —Ruth Benedict (1887–1948)

    “There is nothing truer than myth: history, in its attempt to “realize” myth, distorts it, stops halfway; when history claims to have “succeeded” this is nothing but humbug and mystification. Everything we dream is “realizable.” Reality does not have to be: it is simply what it is.”
    —Eugène Ionesco (b. 1912)

    “All objects, all phases of culture are alive. They have voices. They speak of their history and interrelatedness. And they are all talking at once!”
    —Camille Paglia (b. 1947)