) is adiabaticly expanded (very slowly) in a well insulated container to a volume four times its original volume. It started at room temerature (22 degrees Celsius) and at a pressure of one atmosphere.
Helium ( ) is adiabaticly expanded (very slowly) in a well insulated container to a volume four times its original volume. It started at room temerature (22 degrees Celsius) and at a pressure of one atmosphere.
