Perpetual motion

Perpetual motion
Motion Mo"tion, n. [F., fr. L. motio, fr. movere, motum, to move. See {Move}.] 1. The act, process, or state of changing place or position; movement; the passing of a body from one place or position to another, whether voluntary or involuntary; -- opposed to {rest}. [1913 Webster]

Speaking or mute, all comeliness and grace attends thee, and each word, each motion, forms. --Milton. [1913 Webster]

2. Power of, or capacity for, motion. [1913 Webster]

Devoid of sense and motion. --Milton. [1913 Webster]

3. Direction of movement; course; tendency; as, the motion of the planets is from west to east. [1913 Webster]

In our proper motion we ascend. --Milton. [1913 Webster]

4. Change in the relative position of the parts of anything; action of a machine with respect to the relative movement of its parts. [1913 Webster]

This is the great wheel to which the clock owes its motion. --Dr. H. More. [1913 Webster]

5. Movement of the mind, desires, or passions; mental act, or impulse to any action; internal activity. [1913 Webster]

Let a good man obey every good motion rising in his heart, knowing that every such motion proceeds from God. --South. [1913 Webster]

6. A proposal or suggestion looking to action or progress; esp., a formal proposal made in a deliberative assembly; as, a motion to adjourn. [1913 Webster]

Yes, I agree, and thank you for your motion. --Shak. [1913 Webster]

7. (Law) An application made to a court or judge orally in open court. Its object is to obtain an order or rule directing some act to be done in favor of the applicant. --Mozley & W. [1913 Webster]

8. (Mus.) Change of pitch in successive sounds, whether in the same part or in groups of parts. [1913 Webster]

The independent motions of different parts sounding together constitute counterpoint. --Grove. [1913 Webster]

Note: Conjunct motion is that by single degrees of the scale. Contrary motion is that when parts move in opposite directions. Disjunct motion is motion by skips. Oblique motion is that when one part is stationary while another moves. Similar or direct motion is that when parts move in the same direction. [1913 Webster]

9. A puppet show or puppet. [Obs.] [1913 Webster]

What motion's this? the model of Nineveh? --Beau. & Fl. [1913 Webster]

Note: Motion, in mechanics, may be simple or compound.

{Simple motions} are: ({a}) straight translation, which, if of indefinite duration, must be reciprocating. ({b}) Simple rotation, which may be either continuous or reciprocating, and when reciprocating is called oscillating. ({c}) Helical, which, if of indefinite duration, must be reciprocating.

{Compound motion} consists of combinations of any of the simple motions. [1913 Webster]

{Center of motion}, {Harmonic motion}, etc. See under {Center}, {Harmonic}, etc.

{Motion block} (Steam Engine), a crosshead.

{Perpetual motion} (Mech.), an incessant motion conceived to be attainable by a machine supplying its own motive forces independently of any action from without. According to the law of conservation of energy, such perpetual motion is impossible, and no device has yet been built that is capable of perpetual motion. [1913 Webster +PJC]

Syn: See {Movement}. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • Perpetual motion — Perpetual Per*pet u*al, a. [OE. perpetuel, F. perp[ e]tuel, fr. L. perpetualis, fr. perpetuus continuing throughout, continuous, fr. perpes, etis, lasting throughout.] Neverceasing; continuing forever or for an unlimited time; unfailing;… …   The Collaborative International Dictionary of English

  • Perpetual Motion — (无穷 动, Wu qiong dong) est un film chinois réalisé par Ning Ying, sorti en 2005. Sommaire 1 Synopsis 2 Analyse 3 Réception critique 4 Fiche technique …   Wikipédia en Français

  • perpetual motion — n. the motion of a hypothetical device which, once set in motion, would operate indefinitely by creating its own energy in excess of that dissipated …   English World dictionary

  • Perpetual motion — For other uses, see Perpetual motion (disambiguation). Robert Fludd s 1618 water screw perpetual motion machine from a 1660 wood engraving. This device is widely credited as the first recorded attempt to describe such a device in order to produce …   Wikipedia

  • perpetual motion — Mech. the motion of a theoretical mechanism that, without any losses due to friction or other forms of dissipation of energy, would continue to operate indefinitely at the same rate without any external energy being applied to it. [1585 95] * * * …   Universalium

  • perpetual motion — noun motion that continues indefinitely without any external source of energy; impossible in practice because of friction • Hypernyms: ↑motion * * * perˌpetual ˈmotion 7 [perpetual motion] noun uncountable …   Useful english dictionary

  • perpetual motion — also perpetual motion N UNCOUNT The idea of perpetual motion is the idea of something continuing to move for ever without getting energy from anything else …   English dictionary

  • perpetual-motion — see perpetual motion …   English dictionary

  • perpetual motion — amžinasis judėjimas statusas T sritis fizika atitikmenys: angl. perpetual motion vok. ewige Bewegung, f rus. вечное движение, n pranc. mouvement perpétuel, m …   Fizikos terminų žodynas

  • perpetual motion — A situation where a device will turn forever because there is no friction between the moving part and the stationary part. Although friction can be greatly reduced, it can never be eliminated. Thus a perpetual motion machine is impossible …   Dictionary of automotive terms

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