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seen Jul 21 at 19:43

Jun
23
comment Connection between the Big Bang and Black Holes
@JohnRennie, I was just thinking about a talk he gave at my University. It is very possible I'm misremembering. No critism taken.
Jun
21
comment Connection between the Big Bang and Black Holes
Yes, physicists like Roger Penrose. So Askanison4, don't be too discouraged by the answers. You're thinking like a pro.
May
7
comment E and B field from Time Varying Current
I think Griffiths make this point in his E&M book. If I remember correctly, I think the way to get out of the infinite loop you mention is that physically, you will not be able to keep a time varying current going on forever. If you start with zero current you will have to keep every increasing it meaning you would need an infinite energy source. I think in "real" life the current becomes steady fairly quickly and one does not have to worry about these recursive relations.
May
7
answered Quantum Temperature?
Dec
21
awarded  Teacher
Dec
21
answered PhD or master in physics
Aug
7
asked Kerr Metric in Orthogonal form
Jul
18
comment Are third derivatives of metric perturbations zero?
Thanks Ben. I'm starting to think this was a poorly worded question. But to address some of the points you brought up. No, I do not believe the paper ever mentions any approximations it invokes about $h''' =0$. Yes, you are absolutely right about the tensorial nature of the metric, and I feel really dumb for not remembering it. I think the major issue is that I need to work out all of the algebra they apply to get to the perturbation equations before I can ask the correct question. Thanks again.
Jul
17
awarded  Student
Jul
17
asked Are third derivatives of metric perturbations zero?