File:Ferrofluid_large_spikes.jpg
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![File:Ferrofluid large spikes.jpg](http://upload.wikimedia.org/wikipedia/commons/thumb/c/c4/Ferrofluid_large_spikes.jpg/800px-Ferrofluid_large_spikes.jpg)
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DescriptionFerrofluid large spikes.jpg |
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. |
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Date | UTC | |||
Source | Own work | |||
Author | Gregory F. Maxwell <gmaxwell@gmail.com> PGP:0xB0413BFA | |||
Permission (Reusing this file) |
I, the copyright holder of this work, hereby publish it under the following license:
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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.
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.
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
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This image was selected as picture of the day on Wikimedia Commons for 9 November 2006. It was captioned as follows: English: Ferrofluid, a paramagnetic fluid composed of nanoscale ferromagnetic particles suspended in a carrier fluid Other languages:
Asturianu: Fierrofluidu, un fluidu paramagnéticu compuestu por partícules ferromagnétiques suspendíes nun fluidu. Čeština: 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 Español: Ferrofluido, un líquido paramagnético compuesto por partículas ferromagnéticas suspendidas en un fluido. Esperanto: Ferofluidaĵo estas paramagneta likvaĵo el nanometraj magnetaj metaleroj naĝantaj en fluidaĵo Galego: Ferrofluído, un líquido paramagnético composto por partículas ferromagnéticas suspendidas nun fluído. Italiano: Ferrofluid, un liquido paramagnetico composto di particelle ferromagnetiche sospese in un liquido. Magyar: Ferrofluid, egy paramagnetikus folyadék, amely hordozófolyadékban oldott nanoméretű ferromagnetikus részecskékből áll Norsk nynorsk: Ferrofluid er ei paramagnetisk væske. Polski: Ferrofluid - ciecz będąca zawiesiną ferromagnetycznych cząstek, wykazująca bardzo silne reakcje w obecności pola magnetycznego. Svenska: Ferrofluid är en paramagnetisk vätska. Türkçe: Ferrofluid, nano boyutta ferromanyetik parçacıklardan oluşmuş ve taşıyıcı bir akışkanın üstünde duran paramanyetik akışkan Русский: Ферромагнитная жидкость - парамагнитная жидкость, состоящая из ферромагнитных наночастиц, взвешенных в несущей жидкости 日本語: 磁石を近づけた磁性流体 中文: 磁流体,一种含有纳米级的铁磁体颗粒的液体。 עברית : נוזל מגנטי אשר נמצא על זכוכית משקפת תחת השפעת מגנט חזק. |
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10 July 2006
378,657 byte
1,536 pixel
2,048 pixel
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File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 23:19, 9 August 2006 | ![]() | 2,048 × 1,536 (370 KB) | Futti | Reverted to earlier revision |
23:19, 9 August 2006 | ![]() | 800 × 517 (92 KB) | Futti | Reverted to earlier revision | |
21:11, 29 July 2006 | ![]() | 2,048 × 1,536 (370 KB) | Gmaxwell | Higher resolution version. | |
02:21, 12 July 2006 | ![]() | 800 × 517 (92 KB) | 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 |
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