Timeline for answer to Why compass needle doesn't precess about but aligns by magnetic field? by FlatterMann
Current License: CC BY-SA 4.0
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| when toggle format | what | by | license | comment | |
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| Aug 6, 2023 at 2:54 | comment | added | androidguy | Would the frictionless compass oscillate the same angle regardless of how strong the magnetic field is? | |
| Jun 11, 2023 at 21:46 | vote | accept | moshtaba | ||
| May 26, 2023 at 22:36 | comment | added | FlatterMann | @SolomonSlow Absolutely. Even a cheap air filled compass is quite usable and shows only a limited tendency to oscillations. I did some experiments with neodymium magnets and floss as "bearing" to see how long the oscillations would last and that setup oscillates for a little bit (Q is on the order of a few ten or so, at least without any optimization), but ideally one would probably try that in an evacuated jar to get the oscillations to last a lot longer. With something like a gyroscopic bearing one could probably also demonstrate the precession. | |
| May 26, 2023 at 19:47 | comment | added | Solomon Slow | A bad compass also contains a fluid, air, which provides some damping, though not nearly as much as the liquid fill provides. Also, there will be some damping due to friction in the bearing. | |
| May 26, 2023 at 18:27 | history | answered | FlatterMann | CC BY-SA 4.0 |