Chronology Current Month Current Thread Current Date
[Year List] [Month List (current year)] [Date Index] [Thread Index] [Thread Prev] [Thread Next] [Date Prev] [Date Next]

Re: [Phys-L] light, doppler effect, particles



    Phil,

I have 2 remaining free copies of my book treating this effect from a few different perspectives. If you do not have it in your library, I can ship one to you. I will only need your mailing address.
  Best,
Moses

   

On Tuesday, April 22, 2014 11:41 AM, Philip Keller <pkeller@holmdelschools.org> wrote:

A student asked me a question I need some help with.

Suppose you have a source of light that is just below the threshold
frequency for a given metal surface.  You get no photocurrent.

Now suppose the source is approaching at some speed great enough so that
the Doppler effect shifts the frequency to a value above the threshold.
Now you do get photocurrent, yes?

Suppose an observer riding with the source uses a beam splitter so that
half the light approaches you and gets Doppler shifted to give you that
photo current but the other half goes to the ride-along observer.  He does
not get a photo current...right?

I'm not even sure what my question is.  Can anyone point me to a
photon-based treatment of the doppler effect?

Thanks,
Phil
_______________________________________________
Forum for Physics Educators
Phys-l@phys-l.org
http://www.phys-l.org/mailman/listinfo/phys-l