The third film had a different size, 625 squares rather than 900.

The ratio between histogram adjacent columns remains the same.

The first three films bring out the following points:

  • A large group of atoms reaches a steady distribution after some time.
  • The shape of the distribution does not depend on the starting position.
  • The shape of the distribution is the same as long as the proportion of atoms to quanta remains the same.
  • The shape of the distribution of number of atoms is a curve of constant ratio for equal steps of energy; that is, an exponential distribution.
0 1 2 3 4 5 6 7 8 9 50 100 150 200 250 300 350 400 450 500 550 600 650 700 750 800 850 Move = 0