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Electromagnetism
| Electromagnetism
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(CC) Image: John R. Brews
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(PD) Image: John R. Brews
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The Fizeau apparatus for measuring the speed of light by passing it between the cogs of a rotating gear and reflecting it back through adjacent cogs.
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(PD) Image: John R. Brews
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Measuring a length using interference fringes.
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(PD) Image: John R. Brews
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The wavelengths of standing waves in a box that have zero amplitude (nodes) at the walls.
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(PD) Image: John R. Brews
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(PD) Image: John R. Brews
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Boat opposing incoming waves experiences the Doppler effect
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(PD) Image: John R. Brews
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Doppler shift with moving source
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(PD) Image: John R. Brews
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Infinitesimal current elements in two closed current-carrying loops
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(PD) Image: John R. Brews
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Origin at 0, observation point at P, and present position of charge q distant by R from observation point P.
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(PD) Image: John R. Brews
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Top: View of the light beam's path from inside the train. Bottom: View of the light beam's path from outside the train.
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(PD) Image: John R. Brews
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Top: View of the light beam's path from inside the train. Bottom: View of the light beam's path from outside the train.
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(PD) Image: John R. Brews
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Feynman diagram for photon-photon scattering in QED vacuum.
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