File:Ferrofluid Magnet under glass.jpg

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Description

English: Ferrofluid on a reflective glass plate under the influence of a strong/steep magnetic field.

עברית: he:נוזל מגנטי אשר נמצא על זכוכית משקפת תחת השפעת מגנט חזק.

Русский: Ферромагнитная жидкость на стекле под воздействием магнита под стеклом.

Date

9 July 2006

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:

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 GNU Free Documentation License.

1.2 only

Other versions

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; 10mm/f2.85 Macro at f/200; ISO 100, 10 second exposure; Background illumination provided by 2400watts of 65K high-cri fluorescent. Highlight illumination by photoflash reflected off a 40ft x 15 ft white matt panel.
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

File history

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	Date/Time	Dimensions	User	Comment
current	04:03, 1 August 2006	2,048 × 1,536 (516 KB)	Gmaxwell	Now high resolution.
	04:09, 13 July 2006	800 × 600 (109 KB)	Gmaxwell	Reverted to earlier revision
	04:07, 13 July 2006	800 × 601 (114 KB)	Gmaxwell	Reverted to earlier revision
	02:17, 12 July 2006	800 × 600 (109 KB)	Gmaxwell	fix size so mediawiki doesn't crap it up.
	02:06, 12 July 2006	800 × 601 (114 KB)	Gmaxwell	{{Information \|Description=Ferrofluid on glass, with a rare earth magnet. \|Source=By uploader. \|Date=2006-07-09 \|Author=Gregory F. Maxwell \|Permission=GFDL-1.2 only }} {{GFDL-1.2}}