Electricity and magnetism for advanced students (1920)
Starling, Sydney George, 1873- · London Longmans, Green · leaf 127
uddenly produced at a point does not producea steady potential at every surrounding point, with the correspondingelectrical field, instantaneously, but they are propagated outwardsAvith a finite velocity. This consideration led Maxwell to calculate thevelocity with which an electrical disturbance… … Fig. 123. From analogy with the gravitational force between two masses, itwould naturally be suggested that the force between two smallelectrical charges would vary inversely as the square of their distanceapart. By means of his torsion balance, Coulomb established roughlythe truth of this law. He…
Electricity · Magnetism
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