Licence: Attribution 4.0 International (CC BY 4.0)
Credit: Bragg-Paul Pulsator, model II, Europe, 1938-1939. Science Museum, London. Source: Wellcome Collection.
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: Bragg-Paul Pulsator, model II, Europe, 1938-1939. Science Museum, London. Source: Wellcome Collection.