- An Energy Model of the Toothbrush
A typical glow-in-the-dark toothbrush emits a greenish-yellow
light. (Or, maybe its a yellowish-green light.) It stops emitting
when placed in liquid nitrogen --- a temperature of -196°C.
We do not yet know the exact temperature that the emission strats
as the toothbrush warms. For now, let us assume that emission
starts at -100°C. Use this information to create an energy
band model for the toothbrush.