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It's a very interesting effect, magnetism 'perfectly cancelling' out thermal expansion. Are there any other cases where magnetism is responsible for something
by MichaelZuo 3y ago
It's a very interesting effect, magnetism 'perfectly cancelling' out thermal expansion.
Are there any other cases where magnetism is responsible for something this subtle?
- mturmon 3y agoHow about the Zeeman effect, in which strong magnetic fields in locations where light is emitted, will cause the spectral lines associated with emitting material to split? The strength of the magnetic field is encoded in how broadly the line is split, allowing us to make spatially-resolved maps of the magnetic field of the Sun ("magnetograms"). Like getting the chemical composition of the emitting surface of the Sun, it's the kind of thing you'd think sounds impossible until some clever physicist figures out how to exploit it. See the little animation at the top of the page: https://en.wikipedia.org/wiki/Zeeman_effect https://en.wikipedia.org/wiki/Zeeman_effect
- RugnirViking 3y agoI dont remember what its called but I always liked the magnetic braking thing where if you drop a ferrous cylinder through a copper tube it falls slowly with constant speed, because the magnetism induces current which induces a braking force
- eulgro 3y agoEddy currents