
2: Light: photometry, colorimetry and radiometry.8p-3: Electricity: current, voltage, resistance, power, energy, inductance, capacitance, frequency, etc.14p.
Units and standards of measurement employed at the National Physical Laboratory, 2 and! 3 by National Physical Laboratory. Published by H.M.S.O in 1952. Publication and catalogue information, links to buy online and reader comments.