1. A. Einstein, `Zur Quantentheorie der Strahlung’, Physik. Z. 18 121 (1917).
2. Lord Kelvin, Phil. Mag. 6th series, 3, 257 (1902).
3. The name ‘electron’ was first suggested by G. Johnstone Stoney in a paper in the Phil. Mag. 38 418 (1894). After referring to a paper which he had read at the Belfast meeting of the British Association in 1874, entitled ’On the Physical Units of Nature’, [in which he had expressed Faraday’s law of electrolysis as follows: ’For each chemical bond which is ruptured within an electrolyte a certain quantity of electricity traverses the electrolyte which is the same in all cases.’] Stoney continued: ’In this paper an estimate was made of the actual amount of this most remarkable fundamental unit of electricity, for which I have since ventured to suggest the name electron. According to this determination the electron = a twentiethet [that is, 10-20] of the quantity of electricity which was at that time called the ampere, viz.: the quantity of electricity which passes each second in a current of one ampere, using this term here in its modern acceptation. This quantity of electricity is the same as three eleventhets [3 x 10-11] of the C.G.S. electrostatic unit of quantity.’
4. J. J. Thomson, Phil. Mag. 7, 237 (1904).
5. J. A. Crowther, Proc. Roy. Soc. 84 226 (1910).