Practice question · True or false
Maxwell’s equations predicted the speed of light from constants measured in purely electrical experiments.
Hints
- Where do the permittivity and permeability of free space come from?
- Both were measured from electrostatic and magnetostatic experiments, with no optics involved.
Show the answer
True
Why
True, and were fixed by capacitance and current-force measurements, yet came out at the measured speed of light. This is one of the great unifications in physics.
Practise Maxwell’s Equations and Electromagnetic Waves
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