Incidentally, I also had a discussion about physics recently. A few days ago me and
@Stealthflanker had a discussion on whether jets can be seen taking off with IR satellites. He had a model that showed a geosynchronous satellite could indeed pick up a 1m2 radiator at afterburner temperatures, as a toy model of a jet plume.
I point out a problem with the assumption of an ideal blackbody: jet plumes aren't optically thick.
that an ideal blackbody radiator only applies to optically thick sources, not optically thin ones. In the process I explained the derivation for the optically thin limit,
which was not given (it used a Taylor expansion).
Hmm. How come I can point out problems with real world modeling? How come I can think of optical thickness as a blackbody radiation parameter and explain the derivation without being told what it is? How come I instantly can see that the derivation used a Taylor expansion? None of that is taught in basic undergrad physics, yet it is physics.
In the end, he provided a citation that said yes, at least IR events could be seen. And I presented a plausible scenario that would explain both the derivation and the citation. I learned something, hopefully he did too.
I don't need to assert my degree or what classes I've taken. To even talk about individual classes is laughable to me. Hope you understand.