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Wikipedia states that the strength of the magnetic field near a kitchen magnet is approximately 5 mT ($5 \times 10^{-3}$ Tesla), roughly 1,000 times as strong as Earth's magnetic field in that same...
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#1: Attribution notice removed
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System
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2020-06-01T14:13:47Z (over 4 years ago)
Source: https://worldbuilding.stackexchange.com/a/33528 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/