Image:Ferrofluid large spikes.jpg

Un article de Wikipédia, l'encyclopédie libre.

Logo Wikimedia Commons Ce fichier provient de Wikimedia Commons?. Les informations le concernant sont affichées ci-dessous (procédure).
Ci-dessous, retrouvez page de description du fichier provenant de Commons.
Description
English: Ferrofluid on a reflective glass plate under the influence of a strong/steep magnetic field.
Français : Ferrofluide sur une plaque reflectrice en verre et sous l'influence d'un fort champ magnétique.
עברית: he:נוזל מגנטי אשר נמצא על זכוכית משקפת תחת השפעת מגנט חזק.
Source

By uploader
Date

2006-07-10 04:12:22 UTC
Author

Gregory F. Maxwell <gmaxwell@gmail.com> PGP:0xB0413BFA
Permission
(Reusing this image)

GFDL-1.2
Other versions Image:Ferrofluid_Magnet_under_glass.jpg Image:Ferrofluid_large_spikes2.jpg Image:Ferrofluid_poles.jpg

Related images
English: Ferrofluid, a paramagnetic fluid composed of nanoscale ferromagnetic particles suspended in a carrier fluid, was placed onto a glass plate. The edges of the glass plate are visible at the bottom of the image. A powerful N40 neodymium magnet was placed under the glass along with an iron rod to steepen the field. Spikes form, in a phenomenon called normal field instability, where the magnetic forces are great enough to overcome gravity and surface tension to align the fluid in a magnetically ideal manner.

[edit] Equipment

  • Canon 5D
  • 100mm/f2.8 Macro at f/20
  • ISO 100, 1 second exposure
  • Background illumination provided by 240watts of 6500K high-cri fluorescent. Highlight illumination by photoflash reflected off a 4ft x 1.5 ft white matt panel, additional highlight illumination provided by a distant tungsten light and a set of deep violet LEDs at offset angles to preserve an appearance of depth otherwise lost in the 2D image.

[edit] Processing

  • RAW to 16bit conversion with dcraw
  • Slight rotation
  • Cropping to 4:3 aspect
  • Gain to bring background to white.
  • Minor cloning to remove sensor dust from background area
  • Scaled to 2048x1536
POTY
Featured picture
 This file was a candidate on Picture of the Year 2006.
This is a featured picture on Wikimedia Commons: it is considered one of our finest images.
If you have an image of similar quality that can be published under a suitable copyright license, be sure to upload it, tag it, and nominate it.		 Wikimedia Commons
Desktop wallpaper icon
 This featured picture is fairly large and has an aspect ratio of approximately 4:3 or 5:4, making it suitable as a computer wallpaper.

See the gallery of such images, or the gallery of widescreen images.
Picture of the day This image was selected as a picture of the day for November 9, 2006. It was captioned as followed:
English: Ferrofluid, a paramagnetic fluid composed of nanoscale ferromagnetic particles suspended in a carrier fluid
Asturianu: Fierrofluidu, un fluidu paramagnéticu compuestu por partícules ferromagnétiques suspendíes nun fluidu.
Česky: Ferrofluidní kapalina sestávající z mikroskopických ferromagnetických částeček uvězněných v nosné kapalině
Deutsch: Ferrofluid, eine auf magnetische Felder reagierende Flüssigkeit bestehend aus Nanometer großen magnetischen Partikeln, die in einer Trägerflüssigkeit suspendiert sind.
English: Ferrofluid, a paramagnetic fluid composed of nanoscale ferromagnetic particles suspended in a carrier fluid
Esperanto: Ferofluidaĵo estas paramagneta likvaĵo el nanometraj magnetaj metaleroj naĝantaj en fluidaĵo
Español: Ferrofluido, un líquido paramagnético compuesto por partículas ferromagnéticas suspendidas en un fluido.
Français : Un ferrofluide, fluide fortement polarisé sous l'effet d'un champ magnétique.
Galego: Ferrofluído, un líquido paramagnético composto por partículas ferromagnéticas suspendidas nun fluído.
עברית: נוזל מגנטי אשר נמצא על זכוכית משקפת תחת השפעת מגנט חזק.
Magyar: Ferrofluid, egy paramagnetikus folyadék, amely hordozófolyadékban oldott nanoméretű ferromagnetikus részecskékből áll
Italiano: Ferrofluid, un liquido paramagnetico composto di particelle ferromagnetiche sospese in un liquido.
日本語: 媒介液に浮いた、ナノ・スケールの強磁性粒子から成る磁性流体
‪Norsk (nynorsk)‬: Ferrofluid er ei paramagnetisk væske.
Polski: Ferrofluid - ciecz będąca zawiesiną ferromagnetycznych cząstek, wykazująca bardzo silne reakcje w obecności pola magnetycznego.
Русский: Ферромагнитная жидкость - парамагнитная жидкость, состоящая из ферромагнитных наночастиц, взвешенных в несущей жидкости
Svenska: Ferrofluid är en paramagnetisk vätska.
Türkçe: Ferrofluid, nano boyutta ferromanyetik parçacıklardan oluşmuş ve taşıyıcı bir akışkanın üstünde duran paramanyetik akışkan


‪中文(简体)‬: 磁流体，一种含有纳米级的铁磁体颗粒的液体。

Desktop wallpaper icon
 This featured picture is fairly large and has an aspect ratio of approximately 4:3 or 5:4, making it suitable as a computer wallpaper.

See the gallery of such images, or the gallery of widescreen images.
I, the copyright holder of this work, hereby publish it under the following license:
GNU head Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 only as published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled "Text of the GNU Free Documentation License."

العربية | Català | Česky | Deutsch | English | Español | فارسی | Français | Italiano | 日本語 | Nederlands | ‪Norsk (bokmål)‬ | Polski | Português | Русский | Svenska | Türkçe | Tiếng Việt | ‪中文(简体)‬ | ‪中文(繁體)‬ | +/-

Historique du fichier

Cliquer sur une date et une heure pour voir le fichier tel qu’il était à ce moment-là

Date et heureDimensionsUtilisateurCommentaire
actuel10 août 2006 à 01:192 048×1 536 (370 Kio)Futti (Reverted to earlier revision)
10 août 2006 à 01:19800×517 (92 Kio)Futti (Reverted to earlier revision)
29 juillet 2006 à 23:112 048×1 536 (370 Kio)Gmaxwell (Higher resolution version.)
12 juillet 2006 à 04:21800×517 (92 Kio)Gmaxwell ({{Information |Description=Ferrofluid under the influence of a strong/steep magnetic field. |Source=By uploader |Date=2006-07-10 |Author=Gregory F. Maxwell |Permission=GFDL-1.2 }} Only low res copy contributed for now to avoid quality problems on the ima)