Photogaphic print and diagram showing the compound photo-electric effect in krypton, produced by X-rays of 30 kV
Photogaphic print and diagram showing the compound photo-electric effect in krypton, produced by X-rays of 90 kV
Black and white photographic print, showing the track of a cosmic ray passing through a lead plate 5 mm thick
Photogaphic print and diagram showing the compound photo-electric effect in krypton, produced by X-rays of 60 kV