Entropy - 'Unmix' (from Dissolving and Mixing a Colored Liquid)
When a colored drop of liquid is stirred, its molecules are dispersed throughout the solution. The process is shown in reverse. Blue molecules in a partially mixed aqueous solution "reassemble" into drops of dye on the surface of the water. The situation shown is so highly improbable that we would not expect to observe it in nature.
The size of the movie file is 780 K and its duration is 9 seconds. The name of the movie file is "UNMIX.MOV" and it is located in the folder "MOVIES/ENTROPY".
If your browser has not brought the movie into the above space (you might be running a version of Netscape earlier than 3.0 or not have the proper plug-in), clicking on the following will possibly access the movie. Play movie.