On 5/29/2020 8:51 AM, smitra wrote:
On 29-05-2020 16:11, Alan Grayson wrote:
On Friday, May 29, 2020 at 6:26:20 AM UTC-6, John Clark wrote:
On Thu, May 28, 2020 at 6:28 PM Alan Grayson <[email protected]>
wrote:
_> Wiki has a good article on this. Oddly, when I took E&M
courses, undergraduate and graduate, I don't recall this issue
ever being discussed, at least not in detail. I don't recall any
detailed discussion of Planck's radiation law; that is, how it's
derived. AG _
Wow, you must have had some pretty crappy physics courses!
John K Clark
In E&M, Yes, but surely not in QM. When we got to Maxwell's
displacement current, the professor did some hand-waving related to
delta functions, which was very unsatisfying. A good course in E&M
would, IMO, include a rigorous discussion of Planck's BB formula,
since it is where quantum physics begins, and including a rigorous
treatment Maxwell's displacement current and wave solutions of the
Maxwell's equation. I doubt you have had a good course in QM, and in
physics in general, since you deny that theories of physics start with
postulates, when they obviously do. AG
http://insti.physics.sunysb.edu/~siegel/history.html
Seems to be a rant from the 1950's.
One thing that's interesting about the way physics is taught is that it
tends to repeat the historical sequence from Newton on. Partly this is
because Newtonian mechanics is still very useful, even for physicists
and especially for engineers. It's also teaches how the scientific
method has been applied to get where we are. I notice that this is
quite different from the way engineering is taught...engineers seldom
know much about the history of their subject .
Brent
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