Photo Credits

All photographs are by Benjamin Crowell, except as noted below. Cover Cat neuron: Courtesy of Richard J. Harris, University of Western Ontario. Accelerator: Courtesy of A. Zachau, GSI. Chapter 1 Lightning: C. Clark/NOAA photo library, uncopyrighted. J.J. Thomson: Millikan and Gale, 1920. Millikan's apparatus: Caltech.* Robert Millikan: Clark Millikan, 1891.* Chapter 2 Curies: Harper's Monthly, 1904. Portrait of Becquerel: Millikan and Gale, 1920. Becquerel's photographic plate: Wikipedia, public domain. GAMMASPHERE: C.J. Lister/R.V.F. Janssens, uncopyrighted. Rutherford: Wikipedia, public domain. Chapter 3 Knifefish: Courtesy of Greg DeGreef. Superconducting accelerator segment: Courtesy of Argonne National Laboratory, managed and operated by the University of Chicago for the U.S. Department of Energy under contract No. W-31-109-ENG-38. Portraits of Ampère, Volta, and Ohm: Millikan and Gale, 1920. Chapter 6 Radar: U.S. Forestry Service. Portraits of Hertz, and Maxwell: Millikan and Gale, 1920. Maxwell and his wife: public domain (Wikimedia Commons). Portrait of Faraday: painting by Thomas Phillips, 1842.