On Tue, 1 Nov 2011, Tony Duell wrote:
When a CRT is evacuated, the gas molecules are removed
from the inside,
leaving a vacuum. When it leaks, air goes back in, returnign it to the
natural state. By analogy with the electorstatic experiment, it doesn't
seem so crazy to say the 'vacuum leaked out'.
Not quite the same as when the dark leaks out of your darkroom.