It old, for a start, my late Grandmothers! It looks like an upsidedown glass bulb, in which is a vacuum, and a little spinner with 4 square vertical vanes joined at their corners to a central hub resting on a needle, each vane has a black side and a white side.
It spins rapidly in sunlight, a bit with a big torch, but not at all otherwise,
Heat and florescent light dont affect it,
I know my quantum physics so dont be afraid to get technical,
Radiation being absorbed by the black side, giving off electrons, but enough to move it??? Im stumped!

Share and Enjoy:
  • Digg
  • Sphinn
  • del.icio.us
  • Facebook
  • Mixx
  • Google