:21:08
When the electrons jump
from one orbital to another one...
:21:13
what does that do?
What's the difference between the orbitals?
:21:17
The orbitals differ in energy.
:21:20
The orbitals, which are areas in space
around the nucleus...
:21:23
the ones that are closer to the nucleus,
those are low energy...
:21:26
and the ones that are further away
are higher energy.
:21:29
So when we put energy into the atom...
:21:32
it kicks these electrons out...
:21:34
further away from the nucleus,
and produces a higher.... Yes?
:21:38
After putting electricity
into the tube full of the electrons...
:21:41
after they're lit up, do they stay lit up
or can they run out of energy?
:21:46
Good question. What they do...
:21:48
is they will sit up
in this higher energy state...
:21:51
and then drop down again.
:21:54
And when they drop down, they emit light.