**How strong are magnets?**
https://www.coolmagnetman.com/magflux.htm

It is a unit ofmagnetic flux density. It is also equivalent to these other units: 1 Weber per square meter. 10,000 Gauss (10 kilogauss) 10,000 magnetic field linesper square centimeter. 65,000 magnetic field linesper square inch. Now, 1Gauss is about 6.5 magnetic field lines per square inch. If you place the tip of your index finger tothe tip of your thumb, enclosing approximately 1 square inch, four magneticfield …

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