Nissen, J.A.; Swanson, D.R.; Geng, Z.K.; Lipa, J.A.; Dohm, V.; Israelsson, U.E.; DiPirro, M.J.
(Физика низких температур, 1998)
We are currently building a prototype for a new test of critical-point universality at the lambda
transition in ⁴He, which is to be performed in microgravity conditions. The flight experiment will
measure the second-sound ...