Example image of eyePlorer eyePlorer map for 'Sydney Chapman (mathematician)': 1888 1970 Geophysics January 29 June 16 Mathematician Royal Society Eccles, Greater Manchester Manchester Osborne Reynolds Victoria University of Manchester Horace Lamb John Edensor Littlewood Sizar Wrangler (University of Cambridge) Frank Watson Dyson G. H. Hardy Pure mathematics Royal Observatory, Greenwich Beyer Chair of Applied Mathematics Imperial College London World War II Sedleian Professor of Natural Philosophy The Queen's College, Oxford Cairo Istanbul Prague Tokyo University of Alaska System University of Colorado at Boulder Boulder, Colorado Markov process Stochastic process Andrey Kolmogorov Chapman–Kolmogorov equation Ozone layer Aurora (astronomy) Earth's magnetic field Geomagnetic storm Solar wind International Geophysical Year James Van Allen Satellite Smith's Prize De Morgan Medal London Mathematical Society Gold Medal of the Royal Astronomical Society Royal Society of Edinburgh Copley Medal Chapman (crater)