Photogaphic print and diagram, showing secondary beta-ray ejected from copper by X-rays together with a secondary beta-ray due to copper K-radiation
Photogaphic print, showing a secondary beta-ray ejected from platinum by X-rays, together with a secondary beta-ray due to platinum K-radiation
Photogaphic print and diagram, showing showing secondary beta-rays ejected from air and from a copper screen by X-rays
Black and white photographic print, stereoscopic pair of cloud-track photographs showing tracks of electrons
Early stereoscopic pair of cloud-track photographs, (1913-1914), illustrating electrons ejected by a narrow beam of X-rays
Photographic print, showing the formation of a new isotope of helium by bombarding heavy hydrogen with deuterons
Stereoscopic pair of cloud-track photographs showing the passage of an X-ray beam through a copper target