Some Experiments on Thermal Contact at Low Temperatures

摘要: An apparatus for studying heat contact at low temperatures is described. Measurements of transfer between various surfaces in vacuo have been made. The thermal conductance independent the area and nearly proportional to force them, up forces about 200 lb. At helium all types examined T2, but temperature dependence small nitrogen temperatures. For metal contacts electrical extremely sensitive previous history surfaces, little dependent on this. always much greater than corresponds according Wiedemann‐Franz‐Lorenz law this fact, together with differing behavior two conductances under changing loads, suggests that flow takes place through electrically nonconducting parts surface. main results are collected togeth...