pervect's latest activity

It seems to me that if you define the Lorentz force as being only due to the magnetic field, the Lorentz force is perpendicular to the...

I'm not all that familiar with fiber bundles, but I keep running into them, so this might be a good example of how to think and talk...

I had to look this up, possibly there is some confusion over wording. What I wrote was in the thread on Born rigidity, and what the...

My recollection is that there is a simple exponential relationship between mass ratio and maximum rapidity, regardless of the thrust...

Possibly of interest. https://arxiv.org/abs/1409.4648 "Fermi-Normal, optical, and wave-syncrhonus coordinates for spaceetime with a...

Because of the interferometer design, the beam bounces back and forth multiple times, making the effective length (and the storage time)...

My gut reaction is that it's unrealistic to believe one can maintain such a high acceleration for such a long time. But that's not...

My understanding is that the test masses in Ligo essentially follow space-time geodesics (aka are in free fall), ignoring some of the...

The thing I found most interesting was how that if you postulate magnetic monopoles, the duality between the homogeneous and...

I'm familiar with Einstein writing about the hot plate, but not about Feynmann doing so. My take on the problem is that locally, the...

I suggest thinking of a "standard ruler" as a pair of worldlines, one for each end. On a space-time diagram, a "standard ruler" is a...

Good luck with your studies and your journey of exploration of physics.

One of the early steps, though perhaps not the very first, would be to pick a textbook appropriate to your background. It's...

First, some background. Sorry, it's a bit long. I've been considering the orbits of photons around a black hole. First some...

I had to look this up. My source is not the best, but it says the indices in h_ab do run from 0..3. I'm not sure if I actually said...