At 3.45 he talks about them absorbing a photon if they match the frequency and 3.48 he talks about them going to an excited state and you get a slight "baff" which slows you down :-)
At 4.08 if you keep the same frequency it now goes straight thru the atom ...... Okay so now you are transparent :-)
So at 4.14 we start changing the frequency down .. :-)
HANG ON A MINUTE HE TOLD ME 3.45 that atoms only absorb a specific frequency and second a go I was absorbing that frequency and now I have to absorb a lower frequency.
you do realize that the atom slows dont you?
so wouldn't the atom's frequency also slow...
and that is the reason that he must lower the frequency of the laser...
and that is the reason the photon will pass through the atom
if he does not lower the frequency...
or did you expect that the atom somehow magically maintains the same exact frequency
after the photon is absorbed and the atom is slowed.
have you questioned your logic about that?
