Has anyone here seen "Ferrofluid"

[olishea]

It's crazy!! And it's NOT computer generated!

[flash=853,505:3rtpnfz6]http://www.youtube.com/v/me5Zzm2TXh4&fs=1[/flash:3rtpnfz6]

[xrok1]

some kind of oil filled fountain?
magnetically controlled mercury?

[boofredlay]

I have and I thought I saw it here before but I cannot locate any links.
Pretty cool stuff. Magnetic particles suspended in a solvent.
Incidentally, this is how my stomach feels after a horrid lunch.

[olishea]

you can buy it off the internet and its not poisonous like mercury (dont quote me haha, i wouldnt drink it)! get your magnets out guys!!

and yes electromagnets provide the charge in this case....look at the related videos its mesmerizing!

[olishea]

check dis!

[flash=853,505:1vmz6az1]http://www.youtube.com/v/zpBxCnHU8Ao&fs=1[/flash:1vmz6az1]

[watkins]

Ferrofluids are used for rotary vacuum seals

http://en.wikipedia.org/wiki/Ferrofluidic_seal

[tim]

@watkins said:

Ferrofluids are used for rotary vacuum seals

http://en.wikipedia.org/wiki/Ferrofluidic_seal

And also in some clutches and dampers.

[thomthom]

Fantastic!