Brownian ratchet
In the philosophy of thermal and statistical physics, the Brownian ratchet or Feynman–Smoluchowski ratchet is an apparent perpetual motion machine of the second kind, first analysed in 1912 as a thought experiment by Polish physicist Marian Smoluchowski. It was popularised by American Nobel laureate physicist Richard Feynman in a physics lecture at the California Institute of Technology on May 11, 1962, during his Messenger Lectures series The Character of Physical Law in Cornell University in 1964 and in his text The Feynman Lectures on Physics as an illustration of the laws of thermodynamics. The simple machine, consisting of a tiny paddle wheel and a ratchet, appears to be an example of a Maxwell's demon, able to extract mechanical work from random fluctuations (heat) in a system at the
2020 in scienceBrownean RatchetBrownian RatchetBrownian motionBrownian motorCatalog of articles in probability theoryEntropyFeynman-Smoluchowski ratchetFeynman ratchetHistory of perpetual motion machinesIndex of physics articles (B)J. M. R. ParrondoList of hypothetical technologiesList of things named after Richard FeynmanMarcelo Osvaldo MagnascoMarian SmoluchowskiMaxwell's demonMolecular motorParrondo's paradoxPerpetual motionQuantum stirring, ratchets, and pumpingRatchet (device)Richard_FeynmanThermal ratchetThought experimentTimeline of Polish science and technologyTranslocon
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Brownian ratchet
In the philosophy of thermal and statistical physics, the Brownian ratchet or Feynman–Smoluchowski ratchet is an apparent perpetual motion machine of the second kind, first analysed in 1912 as a thought experiment by Polish physicist Marian Smoluchowski. It was popularised by American Nobel laureate physicist Richard Feynman in a physics lecture at the California Institute of Technology on May 11, 1962, during his Messenger Lectures series The Character of Physical Law in Cornell University in 1964 and in his text The Feynman Lectures on Physics as an illustration of the laws of thermodynamics. The simple machine, consisting of a tiny paddle wheel and a ratchet, appears to be an example of a Maxwell's demon, able to extract mechanical work from random fluctuations (heat) in a system at the
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Eine molekulare Ratsche oder a ...... ohse und Kollegen unternommen.
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In termodinamica, e in fisica ...... e ciò è in realtà impossibile.
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In the philosophy of thermal a ...... hy it cannot actually do this.
@en
ブラウン・ラチェット（英: Brownian ratchet ...... 、それらに対してもブラウン・ラチェットという用語が使われる。
@ja
布朗棘輪（Brownian ratchet），又称费曼棘轮， ...... 方向轉動，此時耗的能來自於溫度梯度，並未違反热力学第二定律。
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1,020,269,870
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March 2018
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Eine molekulare Ratsche oder a ...... ohse und Kollegen unternommen.
@de
In termodinamica, e in fisica ...... all'equilibrio in violazione
@it
In the philosophy of thermal a ...... ions (heat) in a system at the
@en
ブラウン・ラチェット（英: Brownian ratchet ...... 、それらに対してもブラウン・ラチェットという用語が使われる。
@ja
布朗棘輪（Brownian ratchet），又称费曼棘轮， ...... 方向轉動，此時耗的能來自於溫度梯度，並未違反热力学第二定律。
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Brown-a Kliko
@eo
Brownian ratchet
@en
Molekulare Ratsche
@de
Nottolino browniano
@it
Zapadka brownowska
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ブラウン・ラチェット
@ja
布朗棘輪
@zh