We all know about the magnetic field experiment which shows how some particles like graphite inside the pencil can be used to make visible magnetic lines. It is surely a boring stuff if you are over 10 years old.
However, I am sure that many people didn’t hear about ferrofluids which show amazing behaviors which are important both scientifically and visually. The image on the left better talks about the beauty of ferrofluids. Let’s understand what ferrofluid is without going scientific.
Ferrofluids are mixtures of organic solvents and ferromagnetic particles in essence. In normal conditions, if we mix Iron-oxide particles in oil (organic solvent) and bring near to a magnet bar, all iron-oxide particles would be running to magnet bar and piling there without any beauty.
But in the case of ferrofluids, the iron-oxide particles can not be pulled easily by magnets. There are other nanoscale elements called as surfactants which prevent this happening. You can think them as particles in the middle of oil and iron-oxide, thus behaving like a connecting force. So, when a magnet approaches to a special ferrofluid, it would not only affect magnetic particles but also oil attached on nanoscale grade to these particles, leaving us incredibly aesthetic geometrical ferrofluid shapes.
One of the most famous applications on art is ferrofluid sculptures. Here is the ferrofluid sculpture video of a Japanese artist, named as Morpho Towers.
What are Ferrofluids?
Ferrofluid Toys & Science Kits
There are a few nice ferrofluid kits at Amazon to experience this behavior at home. Suitable for children (who can understand that it is not for drinking) as an education material as well.
Ferrofluid Science Project Set 60cc Bottle and Assorted Magnets
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