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Results tagged with electromagnetism
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user 10606
The classical theory of electric and magnetic fields, both in the static and dynamic case. It also covers general questions about magnets, electric attraction/repulsion, etc. Distinct from electrical-engineering.
5
votes
2
answers
414
views
What is the difference between gravitation and electromagnetism?
What is the difference between electromagnetism and gravity?
EDIT: Thanks for the comments. …
- 632
0
votes
1
answer
376
views
Proof of equivalence of two different covariant notations of Maxwell's equations [closed]
My homework assignment is
Prove that
$$\partial_\beta F_{\gamma \delta} + \partial_\gamma F_{\delta \beta} + \partial_\delta F_{\beta \gamma} = 0$$
with the electromagnetic tensor
$$F_{\a …
- 632
8
votes
1
answer
667
views
Why is a magnesium flame changing color in an electromagnetic field?
On YouTube I have seen someone build a RF emitter (probably in the 10 MHz range with about 5000 Watts) and then use it to ignite magnesium strips.
Magnesium usually burns with a bright white flame in …
- 632