Jefferson Mystery Clock: another curious clock in my collection, famous for clock hands that seem to “float” on a plane of crystal glass with no apparent means of motion. A few hours of movement is shown in time lapse. The minute hand is attached to the glass plate which is turned by a motor in the base (the gear on the rim of the glass is hidden in the circular frame of the clock) but how does the hour hand move? Some physics helps out with a brass counter balance weight and a 12 to 1 gear rati