History of Science
drorzel | January 8, 2009In the "uncomfortable questions" comment thread, Thony C. suggests:
You say you're teaching "modern physics" so how about a running commentary on the stuff your teaching?
That's a good suggestion, and I'll start posting some sketchy reports soon. First, though, Bora asks:
What is un-modern physics?
Roughly speaking, physics gets divided into "Classical Physics" and "Modern Physics," with the dividing line coming right around 1900.
"Classical Physics" basically covers fields that were well established before 1900: Newtonian Dynamics, Electricity and Magnetism, most of Thermodynamics, most of…
drorzel | December 7, 2008I spent most of yesterday helping out with an on-campus workshop for high school teachers and students. Seven high school physics teachers and seventeen high school students spent the day doing a half-dozen experiments to measure various physical constants.
I was in charge of having them measure Plack's constant using the photoelectric effect. The actual measurement (made using a PASCO apparatus) takes about fifteen minutes, so I gave each group a quick explanation of the history: Einstein proposed the particle model of light as an explanation for the photoelectric effect in 1905, and nobody…
drorzel | November 18, 2008In the previous post, I promised to say something more about Einstein and the photoelectric effect. It turns out that I already wrote about this, back in 2005. That post is the end of a long chain of links about the history of photons.
This is a good thing, because it frees me from having to try to type a new post with a baby on my lap. You're kind of getting short-changed, though, so to make up for the lack of new content, here's a relevant footnote from Chapter 1 of the book-in-progress:
Millikan thought the Einstein model lacked "any sort of satisfactory theoretical foundation," and…