noun
: transfer of heat which is much faster than conduction or convection, which is observed only in helium II, and in which waves of temperature resembling sound waves travel at speeds of about 20 meters per second
noun
: transfer of heat which is much faster than conduction or convection, which is observed only in helium II, and in which waves of temperature resembling sound waves travel at speeds of about 20 meters per second
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012