File:HahnEcho GWM.gif
HahnEcho_GWM.gif (400 × 300 pixels, file size: 2.12 MB, MIME type: image/gif, looped, 256 frames, 10 s)
Captions
Summary
[edit]DescriptionHahnEcho GWM.gif |
English: Animation of a Hahn echo. Examples of the Hahn echo include the spin echo and the photon echo. The red arrows can be thought of as spins. Applying the first pulse rotates the spins by 90 degrees, producing an equal superposition of spin up and spin down. The spins then "spread out" because each is in a slightly different environment. This spreading out looks like decoherence, but it can be refocused by a second pulse which rotates the spins by 180 degrees. Several simplifications are used in this animation: no decoherence is included and each spin experiences perfect pulses during which the environment provides no spreading. Animation made by Gavin W Morley with POV-Ray 3.6; some rights reserved. A higher resolution version is available here: File:GWM HahnEcho.gif but neither one animates in Wikipedia if they are rescaled, due to a Wikipedia bug. An animation with spin dephasing is shown here: File:GWM HahnEchoDecay.gif |
Date | |
Source | Gavin W Morley |
Author | GavinMorley |
Licensing
[edit]- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
This image has been assessed using the Quality image guidelines and is considered a Quality image.
العربية ∙ جازايرية ∙ беларуская ∙ беларуская (тарашкевіца) ∙ български ∙ বাংলা ∙ català ∙ čeština ∙ Cymraeg ∙ Deutsch ∙ Schweizer Hochdeutsch ∙ Zazaki ∙ Ελληνικά ∙ English ∙ Esperanto ∙ español ∙ eesti ∙ euskara ∙ فارسی ∙ suomi ∙ français ∙ galego ∙ עברית ∙ हिन्दी ∙ hrvatski ∙ magyar ∙ հայերեն ∙ Bahasa Indonesia ∙ italiano ∙ 日本語 ∙ Jawa ∙ ქართული ∙ 한국어 ∙ kurdî ∙ Lëtzebuergesch ∙ lietuvių ∙ македонски ∙ മലയാളം ∙ मराठी ∙ Bahasa Melayu ∙ Nederlands ∙ Norfuk / Pitkern ∙ polski ∙ português ∙ português do Brasil ∙ rumantsch ∙ română ∙ русский ∙ sicilianu ∙ slovenčina ∙ slovenščina ∙ shqip ∙ српски / srpski ∙ svenska ∙ தமிழ் ∙ తెలుగు ∙ ไทย ∙ Tagalog ∙ toki pona ∙ Türkçe ∙ українська ∙ vèneto ∙ Tiếng Việt ∙ 中文 ∙ 中文(简体) ∙ 中文(繁體) ∙ +/− |
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 13:34, 13 June 2011 | 400 × 300 (2.12 MB) | GavinMorley (talk | contribs) | less bright colours and more head-on pulse sequence | |
14:43, 4 June 2011 | 400 × 300 (1.69 MB) | GavinMorley (talk | contribs) | Pulse sequence rotated to be head-on. Echo shown in yellow as it comes from the spin system rather than being sent to the spin system. | ||
14:39, 4 June 2011 | 400 × 300 (1.69 MB) | GavinMorley (talk | contribs) | Pulse sequence rotated to be head-on. Echo shown in yellow as it comes from the spin system rather than being sent into it. | ||
21:14, 25 February 2011 | 400 × 300 (1.65 MB) | GavinMorley (talk | contribs) | {{Information |Description ={{en|1=Animation of a Hahn echo. Examples of the Hahn echo include the spin echo and the photon echo. The red arrows can be thought of as spins. Applying the first pulse rotates the spins by 90 degrees, producing an equal su |
You cannot overwrite this file.
File usage on Commons
The following 7 pages use this file:
- User:Jacopo Werther/Favourites/Animated GIF
- User talk:GavinMorley
- Commons:Featured picture candidates/File:HahnEcho GWM.gif
- Commons:Featured picture candidates/Log/June 2011
- Commons:Quality images/Subject/Animated
- Commons:Quality images candidates/Archives May 2011
- Commons:Valued image candidates/HahnEcho GWM.gif
File usage on other wikis
The following other wikis use this file:
- Usage on ar.wikipedia.org
- Usage on ceb.wikipedia.org
- Usage on cs.wikipedia.org
- Usage on de.wikipedia.org
- Usage on en.wikipedia.org
- Usage on es.wikipedia.org
- Usage on fi.wikipedia.org
- Usage on he.wikipedia.org
- Usage on ja.wikipedia.org
- Usage on pt.wikipedia.org
- Usage on ru.wikipedia.org
- Usage on th.wikipedia.org
- Usage on uk.wikipedia.org