Title: Deflection of Secondary Rays Produced by Beta Radiation
Object type: Photograph
Date: 1903
Artist:  Henri Becquerel 
Artist bio: French, 1852–1908
Artist nationality: French
Artist role: Artist
Medium: Gelatin silver print
Dimensions: Image: 8.1 × 10.9 cm (3 3/16 × 4 5/16 in.)
Classification: Photographs
Credit line: Twentieth-Century Photography Fund, 2013
Department: Photographs
Repository: Metropolitan Museum of Art, New York, NY