Cycling 20:01 [1] 4.43 mi (4:31 / mi)
Lectured on N-slit interference and single slit diffraction, go wave optics! Esp fun because N-slit interference lets me bring up diffraction gratings which lets me bring up spectroscopy and show spectra of stars!
Then a good swim session and a light exercise bike again. Bike really feels fine, but unsure if it would if I went harder. We'll see in some more days.