Winter break circuit cards with EM thanks for the blog post @cossettej.bsky.social #iteachphysics

Cool! Diffraction glasses fun

Students have been coming after school and I'm getting a similar cry for hell "i just don't know how to start the problem. I understand the examples but when I do the AP problems I just don't know how to start." These are my AP mech students and it's always in reference to AP q's #iteachphysics

Many don't realize that it can take your eyes over an hour to reach peak sensitivity when adapting to darkness. In fact, your rod cells do not even take over as the primary facilitator of vision until about 10 min. into darkness exposure. Significant gains in sensitivity continue for 10-20 minutes.

I'm trying to rewrite old FRQs. For AP Physics C, can someone explain to me the difference between deriving equations and deriving expressions? #iteachphysics