| 219. |
Watches that glow in
the dark stop glowing after a couple of days in a dark closet because
|
|
A. |
all of the electrons have
returned to the ground state. |
|
The
emission of electrons stops when all of the electrons have returned to the
ground state.
I could not help choice C. I was
watching Star Wars
The Correct Answer is A. |
|
B. |
the light hitting the electrons
is not of the correct color. |
|
|
C. |
all of the photons were absorbed
by a dark force. |
|
|
D. |
the battery has run down. |
|