All posts by chelsea


Both Griffiths QM (P397) and our old classical mechanics bok (p365) describe luminosity (which I just knew as intensity or flux density). L=number of particles per unit area per unit time. We discussed it last semester when talking about scattering cross sections.

Opening ISpy

Does anyone else get this message when they try to open ispy?
[lxplus203] ~ > chmod +x ispy
[lxplus203] ~ > ./ispy
Reading default views.
Fontconfig warning: no elements found. Check configuration.
Fontconfig warning: adding /usr/share/fonts/fonts.cache-1
Fontconfig warning: adding ~/.fontconfig
ispy: Fatal IO error: client killed
I also tried doing the wget thing beforehand but that didn’t work either.