Questions tagged [electromagnetism]
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With a sufficiently diamagnetic material, is it possible to create thrust from a star to propel a spacecraft?
This is a showerthought after the NYtimes "tic tac" video that I've had for a while and am looking for a specific answer. Assuming a perfectly diamagnetic material exists, could an object ...
2
votes
0answers
32 views
Can Lorentz forces partially cancel centrifugal forces?
If we had a tidally stabilised skyhook (https://en.wikipedia.org/wiki/Space_tether#/media/File:Skyhooks.gif) with electric charge and with a vector of force aiming towards the center of the Earth, ...
5
votes
1answer
138 views
What is the formula for the gain factor of a ferromagnetic core for a torquer coil rod?
I am an undergraduate who is currently designing an actuation system for a CubeSat, more specifically a PCB magnetorquer. (with 2 ferromagnetic core coils and one air core)
I made an excel sheet that ...
1
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0answers
31 views
Velocity of a charged particle due to electric field in relativistic limit [closed]
I am trying to calculate the velocity of a charged particle moving through a constant E field.
I understand that I can set $\frac{1}{2}mv^{2} = qV$ to give $v = \sqrt{\frac{2Vq}{m}}$
However, im not ...
2
votes
1answer
247 views
Space-borne electromagnetic lens to focus energetic charged particles
Is it feasible to build a spaceborne electromagnetic lens (such as but not limited to a solenoid) of large area (perhaps as large as the ring at the supercollider at CERN) to gather and intensify ...
2
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1answer
218 views
How strong is Sun magnetic field on Moon surface? And on Mars?
I wan to calculate the voltage difference generated by sun EM Field on a wire placed on Moon or Mars surface, but I can't find consistent data about solar EM Field.
I found different values:
The ...
