Metric System, Henri Becquerel, Part 22

Henri Becquerel

France, 4 February 1946, Henri Becquerel

Image of Becquerel’s photographic plate, 1896.

Henri Becquerel. Image of Becquerel’s photographic plate which has been fogged by exposure to radiation from a uranium salt. The shadow of a metal Maltese Cross placed between the plate and the uranium salt is clearly visible.

Guiné-Bissau, Henri Becquerel

Guiné-Bissau, Henri Becquerel

Henri Becquerel