Sir Edward Appleton and Joseph Priestley: two giants of electrical science

Appleton, 1927, The existence of more than one ionised layer in the upper atmosphere, Nature, 120, 330, 10.1038/120330a0 Appleton, 1932, Wireless studies of the ionosphere, J. IEE, 71, 642 Appleton, 1962 Appleton, 1963, Radio and the Ionosphere, 70 Appleton, 1925, On some direct evidence for downward atmospheric reflection of electric rays, A109, 621 Appleton, 1937, British radio observations during the Second International Polar Year 1932–1933, Phil. Trans. R. Soc., A236, 191, 10.1098/rsta.1937.0002 Beynon, 1975, Marconi, radio waves, and the ionosphere, Radio Sci., 10, 657, 10.1029/RS010i007p00657 Clark, 1971 Excell, 1993, Sir Edward Appleton: A Centenary Retrospect, 1, 426 Geddes, 1974 Gibbs, 1965 Heilbron, 1979 Kuhn, 1970 Lovell, 1968 Piggott, 1994, Some reminiscences of work with Sir Edward Appleton, J. atmos. terr. Phys., 56, 727, 10.1016/0021-9169(94)90129-5 Priestley, 1766 Priestley, 1806 Ratcliffe, 1966, Edward Victor Appleton 1892–1965, Biogr. Mem. Fellows R. Soc., 12, 1, 10.1098/rsbm.1966.0001 1966 Strangeways, 1994, Appleton's magneto-ionic theory and the Lorentz Polarisation Term, J. atmos. terr. Phys., 56, 705, 10.1016/0021-9169(94)90127-9 Twiss, 1992 Watson-Watt, 1957