Thank you for the detailed talk! But I am do not sure about the Luminosity formula (at ~ 48:23). As I understood, it should be the opposite L = F * 4pid^2, because even if we will look at units (flux density is erg/s/cm^2/A and luminosity erg/s/A, we should then multiply flux density by cm^2 in order to obtain the luminosity units). en.wikipedia.org/wiki/Luminosity
