File:Feynman ratchet.png

From Wikimedia Commons, the free media repository
Jump to navigation Jump to search

Feynman_ratchet.png ‎(286 × 187 pixels, file size: 25 KB, MIME type: image/png)

Captions

Captions

Add a one-line explanation of what this file represents

Summary[edit]

Description
English: Schematic figure of a Brownian ratchet (Feynman-Smoluchowski ratchet), a simple hypothetical mechanism used in a thought experiment by Marian Smoluchowski and Nobel laureate Richard Feynman to demonstrate the laws of thermodynamics.
The device is a tiny paddlewheel attached to a ratchet. It appears to be an example of a Maxwell's Demon, able to produce useful work from the random thermal motion of molecules at a constant temperature in violation of the Second Law of Thermodynamics. Feynman and others showed why it cannot actually produce work if T1 = T2
Esperanto: Skema bildo de Brown-a kliko.
Español: Esquema del trinquete de Feynman.
Italiano: Figura schematica della ruota (ratchet) di Feynman.
Polski: Schemat zapadki.
Sicilianu: N'apparecchiu dû fisicu Feynman.
Source Own work
Author Bdkoivis

135sw7y uipo[ eryasfs ayis naisl s akips

An other image of the same Feynman's machine. (image)

This technology image could be re-created using vector graphics as an SVG file. This has several advantages; see Commons:Media for cleanup for more information. If an SVG form of this image is available, please upload it and afterwards replace this template with {{vector version available|new image name}}.


It is recommended to name the SVG file “Feynman ratchet.svg”—then the template Vector version available (or Vva) does not need the new image name parameter.

Licensing[edit]

Public domain This work has been released into the public domain by its author, I, Bdkoivis. This applies worldwide.
In some countries this may not be legally possible; if so:
I, Bdkoivis grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current16:38, 14 July 2007Thumbnail for version as of 16:38, 14 July 2007286 × 187 (25 KB)Bdkoivis (talk | contribs){{Information |Description= |Source=self-made |Date= |Author= Bdkoivis }}

You cannot overwrite this file.

File usage on other wikis

The following other wikis use this file:

Retrieved from "https://commons.wikimedia.org/w/index.php?title=File:Feynman_ratchet.png&oldid=467633888"