PIRA 4A50.00 LIQUID HELIUM

DCS #DEMONSTRATIONREFERENCEABSTRACT
4A50.00Liquid Helium
4A50.10basic low temperature apparatus28-1The basic apparatus for working with liquid helium is reviewed. Details in appendix, p.1305.
4A50.11low temp apparatusAJP 34(8),692Pictures of many devices for use in lecture demonstration and laboratory.
4A50.20superconduction in leadAJP 43(12),1105A superconducting ammeter allows direct observation of the current.
4A50.20superconduction in lead28-2.1Lead in liquid helium is superconducting and floats a magnet. Picture.
4A50.30the persistent current28-2.2A niobium coil remains superconduction at 4.2 K for up to 5 amps. Picture, Diagram.
4A50.40lambda-point transition28-2.3The transition between helium I and II.
4A50.50superleak28-2.4Leakage through a fritted disk happens with helium I but not II.
4A50.60the fountain effect28-2.5The fountain effect. Pictures.
4A50.70rollin creeping film28-2.6A film of helium II creeps out of a dish. Picture.
4A50.80resistance vs. temperature28-2.7A circuit shown can be used to demonstrate superconductivity in lecture. Diagram.

ReferenceDescription
M-1Sutton
Ma-1Freier & Anderson
M-1dHilton
8-2.8Meiners
1A12.01University of Minnesota Handbook
AJP 52(1),85American Journal of Physics
TPT 15(5),300The Physics Teacher
Disc 01-01The Video Encyclopedia of Physics Demonstrations

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