User:John R. Brews/Electromagnetism

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The account of this former contributor was not re-activated after the server upgrade of March 2022.


Electromagnetism

Electromagnetism
Electric motor using a current loop in a magnetic flux density, labeled B
(CC) Image: John R. Brews
Electric motor using a current loop in a magnetic flux density, labeled B
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.
(PD) Image: John R. Brews
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.
Measuring a length using interference fringes.
(PD) Image: John R. Brews
Measuring a length using interference fringes.
The wavelengths of standing waves in a box that have zero amplitude (nodes) at the walls.
(PD) Image: John R. Brews
The wavelengths of standing waves in a box that have zero amplitude (nodes) at the walls.
Measuring a length in wavelengths of light using a Michelson interferometer.
(PD) Image: John R. Brews
Measuring a length in wavelengths of light using a Michelson interferometer.
Boat opposing incoming waves experiences the Doppler effect
(PD) Image: John R. Brews
Boat opposing incoming waves experiences the Doppler effect
Doppler shift with moving source
(PD) Image: John R. Brews
Doppler shift with moving source
Infinitesimal current elements in two closed current-carrying loops
(PD) Image: John R. Brews
Infinitesimal current elements in two closed current-carrying loops
Origin at 0, observation point at P, and present position of charge q distant by R from observation point P.
(PD) Image: John R. Brews
Origin at 0, observation point at P, and present position of charge q distant by R from observation point P.
Top: View of the light beam's path from inside the train. Bottom: View of the light beam's path from outside the train.
(PD) Image: John R. Brews
Top: View of the light beam's path from inside the train. Bottom: View of the light beam's path from outside the train.
Top: View of the light beam's path from inside the train. Bottom: View of the light beam's path from outside the train.
(PD) Image: John R. Brews
Top: View of the light beam's path from inside the train. Bottom: View of the light beam's path from outside the train.
Feynman diagram for photon-photon scattering in QED vacuum.
(PD) Image: John R. Brews
Feynman diagram for photon-photon scattering in QED vacuum.
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