Very clever design! Don't drop the cow magnet into the test tube...
Any way to prevent oxidation, yet not cause clumping? Use the gas
from a bag of Tostitos, probably nearly-pure nitrogen?
Shortly after ferrofluids became available, I had some within a non-
miscible clear surrounding liquid. As you increased the field
strength, "pseudopods" would form; the number of tips was
proportional to the field strength. I read somewhere that the shape
of the "pseudopods" is unique in the physical world; never did learn
what math. function describes them.
Not sure what happened; the thin-chamber toys had short life, and
bulk fluid became really costly. No more to play with...
I picked up a roll (looks much like a roll of coins!) of
Ferrofluidics (TM) shaft seals at the MIT Flea Market last year. Each
is essentially a well-designed "thin washer" magnet between two steel
washers.
Nicholas Bodley |@| Waltham, Mass.
Please reply to nbodley@alumni.princeton.edu
Opera browser user, registered
Autodidact and polymath to some extent
This archive was generated by hypermail 2.1.3 : Mon Apr 24 2006 - 11:34:48 PDT