Fantastic. I especially liked the speed of light button. One of the interesting things I originally missed because I eventually used the shortcut buttons was this gem (from the source code):
> "If the proton of a hydrogen atom was the size of the sun on this map, we would need 11 more of these maps to show the average distance to the electron"
> "If the proton of a hydrogen atom was the size of the sun on this map, we would need 11 more of these maps to show the average distance to the electron"