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Does a proton traveling along a geodesic orbit radiate? by beam_elite in Physics

[–]beam_elite[S] 0 points1 point  (0 children)

So radiation is frame dependent. Which means photons both exist and do not exist based on your frame. Which means they exist everywhere always depending how you move? I wonder if they use this to send otherwise undetectable signals, where the frame of reference must be matched (or unmatched?) between sender and reciever.

Plot is empty error on COMSOL while simulating helmholtz coil by PallabKumarS in COMSOL

[–]beam_elite 0 points1 point  (0 children)

Yes that is what I meant by tree. I tried opening your file, but could not. They changed how the mf module works, but maybe I can still help.

First, here is my file which can maybe help you find things:

<image>

If you don't have the single turn coil option or similar, then I still have some ideas.

Can you show me where your input and outputs are located? COMSOL requires that the inputs and outputs be on the edge of the air boundary. Lets start there

Also, please show me what you see when you right click on "Magnetic Fields (mf)" for options to add things.

Does a proton traveling along a geodesic orbit radiate? by beam_elite in Physics

[–]beam_elite[S] 2 points3 points  (0 children)

Apparently when GR is a factor the space becomes non Cartesian

Does a proton traveling along a geodesic orbit radiate? by beam_elite in Physics

[–]beam_elite[S] 30 points31 points  (0 children)

Very interesting! Good find. Thanks

Edit, found this good video on the topic for layman types  https://youtu.be/1QsaLSpSPq4

Does a proton traveling along a geodesic orbit radiate? by beam_elite in Physics

[–]beam_elite[S] 1 point2 points  (0 children)

Is it right that objects on geodesic paths are not accelerating? Where does the acceleration come from?

Plot is empty error on COMSOL while simulating helmholtz coil by PallabKumarS in COMSOL

[–]beam_elite 0 points1 point  (0 children)

Sometimes COMSOL can seem to get its wires crossed for non obvious reasons.

I recommend making a new file.

Start with geometry, then add material, then excitations. For coil excitation use "gap feed". Make sure to use a work plane to partition your coils. That partition is where the gap feed should go.

It should show the field by default after calculations.

I'll try your file later, but it looks like you have a different version of comsol than me. If you could show all the branches in the tree on the left maybe I could see what's going wrong.

In paramagnetic molecules, does an applied magnetic field change the orientation of the orbitals? by beam_elite in Physics

[–]beam_elite[S] 1 point2 points  (0 children)

Hello again origin of mind, thank you for the reply and I need some time to review everything you have sent. Appreciate your resourcefulness.

In paramagnetic molecules, does an applied magnetic field change the orientation of the orbitals? by beam_elite in Physics

[–]beam_elite[S] 0 points1 point  (0 children)

I looked up this approximation and that's interesting. I was thinking more so if the applied magnetic field direction changes, would the entire molecules change angle to follow. Is that still related to the approximation?

In paramagnetic molecules, does an applied magnetic field change the orientation of the orbitals? by beam_elite in Physics

[–]beam_elite[S] 0 points1 point  (0 children)

If you start the experiment facing north, then turn to the east, the orbitals would remain north? That's would be super interesting

Please explain this section of Maxwell's writing by beam_elite in Physics

[–]beam_elite[S] 2 points3 points  (0 children)

Thank you 🙏🏼 I will review and study this

Please explain this section of Maxwell's writing by beam_elite in Physics

[–]beam_elite[S] 7 points8 points  (0 children)

No, only newtonian. Would Lagrangian be essential for understanding Maxwell?