weirdoguy's latest activity
-
weirdoguy replied to the thread Graduate Is the variation of the metric ##\delta g_{\mu\nu}## a tensor?.Yes, but still some people wouldn't call those tensors "the same object". Especially most mathematical physicists/mathematicians that I... -
weirdoguy replied to the thread Graduate Is the variation of the metric ##\delta g_{\mu\nu}## a tensor?.Are they? Tensors are mappings from cartesian products of vector spaces and their duals. What you wrote are coordinate representations...
-
weirdoguy reacted to A.T.'s post in the thread Undergrad Synchronizing clocks in an inertial frame if light is anisotropic with
Like.
It sounds backwards, but makes perfect sense. Similarly to this: -
weirdoguy reacted to PeroK's post in the thread Undergrad Is calling fictitious forces "not real" just about terminology? with Like.
Nothing. They are just different names for the same things. If you taught a class of students using those terms and a class of...
-
weirdoguy reacted to A.T.'s post in the thread Undergrad Is calling fictitious forces "not real" just about terminology? with
Skeptical.
Physists of the past have been brilliant at describing nature using math, but terrible at choosing the right words for it. Both naming... -
weirdoguy reacted to PeroK's post in the thread Undergrad Is calling fictitious forces "not real" just about terminology? with Like.
I must admit I don't generally use the terms "action" and "reaction". But, "real" and "fictitious" make perfect sense to me. I never...
-
weirdoguy replied to the thread Undergrad Is calling fictitious forces "not real" just about terminology?.Oh yes. And if I don't have time, I don't teach them. Where? I mean, I understand this thred is an example, but from my experience...
-
weirdoguy reacted to wrobel's post in the thread Undergrad Is calling fictitious forces "not real" just about terminology? with
Love.
-
weirdoguy reacted to Foretranimal's post in the thread Undergrad I don't see how a black hole's event horizon can be crossed with Like.
That would be the clever insult Dirac threw at a student who made a wild guess about the wavelength of visible light when he didn't...
-
weirdoguy reacted to Dale's post in the thread Undergrad I don't see how a black hole's event horizon can be crossed with Like.
I am not so pessimistic about @Foretranimal because of their openness here. There is quite a bit to do, but they do not seem resistant...
-
weirdoguy replied to the thread A three month long summer vacation from public school seems stupid.No we wouldn't. It's basic psychology. No amount of wishfull thinking on your part will change the way humans, and in particular humans...
-
weirdoguy reacted to sevensages's post in the thread A three month long summer vacation from public school seems stupid with
Sad.
And we would have a better educated population if the summer vacation was reduced to two weeks. -
weirdoguy reacted to martinbn's post in the thread A three month long summer vacation from public school seems stupid with Like.
What about the week itself? Two days weekends! Isn't that too much? What about the days? How many hours per day? What about the nights...
-
weirdoguy reacted to PeterDonis's post in the thread Insights Why Entangled Photon-Polarization Qubits Violate Bell’s Inequality with Like.
Reopening thread to reply. It means what relativity says it means. We're discussing physics here, not philosophy. Relativity of...