Paramagnetism of Liquid Oxygen
- This demo works best with small groups, as it's a little
bit messy and the effect is short lived and visible only at close range.
- Wear cryo gloves at all times during the performance of this
demo (no brainer).
- Fill small styrofoam cooler (upper left photo) with liquid
nitrogen to a depth of 4 or 5 inches. Dip magnet into LN2 to cool it down
(if magnet is not sufficiently cold, LOx will evaporate too quickly upon contact
to produce effect). Using a paper cup, remove some LN2 from styrofoam cooler
and pour into suspended can. Liquid oxygen will condense on surface of can
and drip into the magnet's variable gap.
- Aluminum can, clamp, and magnet located in L01, section B2.
Styrofoam cooler and ring stand in L34.