Monday, Mar 22 finish reading section 2.5 on the Compton effect
Tuesday, Mar 23
no new reading, but there are still 4 questions left
unanswered from last thursday and yesterday:
a) why does the Compton effect use x-rays
(and not, say, visible light?)
b) how did people know the first crystal plane separations?
c) why (when measuring the wavelength of light with a
diffraction grating) must the separation of the gratings
be comparable to the wavelength of light?
d) why is the Compton effect evidence for particle-like behavior of light?
Thursday, Mar 25 work on photoelectric effect, see below
Friday, Mar 26
read the Feyman article, "The Quantum Behavior of Electrons"
as you read, make a table of the various experiments' details, the results
of each, etc.
try to reproduce the mathematics; you know enough to do it; hint: complex
algebra required
Monday, Mar 22
bring to class: a print-out of your best function
fit
to the current-vs-voltage plots from the photoelectric
effect data...
you should bring at least one for each color (and you should
have tried more functions than the one (best) that you
bring; you must use the same function for all light colors
Tuesday, Mar 23 laser lab due
Thursday, Mar 25 to be
done by class:
1) calculate means and standard deviations for the each of the 3 colors'
directly-measured stopping voltages
2) finalize your function fit, and perform the extrapolation to each of
your
current-vs-voltage data sets to obtain an extrapolated stopping voltage
3) calculate means and standard devations fir each of the 3 colors'
extraolated stopping voltages
Friday, Mar 26 Serway problems chapter 2 (11, 15, 41, 46)
Monday, Mar 29 Photoelectric experiment due