In practice, the speed of the vapour through the heat pipe is limited by the rate of condensation at the cold end and far lower than the molecular speed.
2.
Szil�rd pointed out that a real-life Maxwell's demon would need to have some means of measuring molecular speed, and that the act of acquiring information would require an expenditure of energy.
3.
The maximum frequency a sound wave can have and still be able to propagate in a gas is roughly the inverse of the mean free time ( molecular mean free path divided by average molecular speed ).
4.
Thus helium molecules ( monatomic molecules ) travel faster in a sound wave and transmit sound faster . ( Sound travels at about 70 % of the mean molecular speed in gases; the figure is 75 % in monatomic gases and 68 % in diatomic gases ).
5.
Statistical mechanics played a significant role in the development of TST . However, the application of statistical mechanics to TST was developed very slowly given the fact that in mid-19th century, James Clerk Maxwell, Ludwig Boltzmann, and Leopold Pfaundler published several papers discussing reaction equilibrium and rates in terms of molecular motions and the statistical distribution of molecular speeds.
मोबाइल