| 1. | Machines that use electromagnetism to defy gravity have a checkered history.
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| 2. | This was the first evidence that light was related to electromagnetism.
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| 3. | The equations of electromagnetism are best described in a continuous description.
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| 4. | In 1928 Paul Dirac produced a relativistic quantum theory of electromagnetism.
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| 5. | Joseph Henry delivered his first paper on electromagnetism to the Institute.
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| 6. | Some miniature circuit breakers operate solely on the basis of electromagnetism.
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| 7. | Barnett worked mainly on electromagnetism, and discovered the Barnett effect.
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| 8. | Subsequent studies have not found direct links between electromagnetism and health risks.
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| 9. | It is also found in cosmology, thermodynamics, mechanics and electromagnetism.
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| 10. | This will be used below in the section on electromagnetism.
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