Rosa and Dorsey method

Rosa and Dorsey method

[′rō·sə ən ′dȯr·sē ‚meth·əd]
(electromagnetism)
A method of measuring the speed of light by comparing the capacitance of a capacitor in electromagnetic units, as measured experimentally, with values of currents determined from a current balance, to the capacitance of the same capacitor in electrostatic units, as determined from its geometrical dimensions.