Ferrofluid of Seventeen Evergreen

Ferrofluid raw footage from the music video for Seventeen Evergreen, "Haven't Been Yourself (Lucky Number Music)", Directed by Encyclopedia Pictura. A ferrofluid is a liquid that becomes strongly polarised in the presence of a magnetic field. Ferrofluids are composed of nanoscale ferromagnetic particles suspended in a carrier fluid, usually an organic solvent or water. The ferromagnetic nano-particles are coated with a surfactant to prevent their agglomeration (due to van der Waals and magnetic forces). Although the name suggests otherwise, ferrofluids do not display ferromagnetism, since they do not retain magnetisation in the absence of an externally-applied field. In fact, ferrofluids display paramagnetism, and are often referred as being "superparamagnetic" due to their large magnetic susceptibility. Truly ferromagnetic fluids are difficult to create at present, requiring high temperatures and electromagnetic levitation.

Channel: Howto & Style
Uploaded: November 30, 1999 at 12:00 am
Author: dannylava

Length: 01:18
Rating: 4.85
Views: 55791

Tags: Encyclopedia  evergreen  ferro  ferrofluid  fluid  footage  liquid  magnet  motion  ooze  organism  Pictura  polarised  raw  science  

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