Books, Brochures, and Chapters>Book: (France) , Académie des sciences (2006), Comptes rendus, French Academy of Sciences, Retrieved on 2012-01-04Source Material [books.google.com]
Folksonomies: science Memes
04 JAN 2012
Henri Becquerel Discovers Radiation
[Concerning] phosphorescent bodies, and in particular to uranium salts whose phosphorescence has a very brief duration. With the double sulfate of uranium and potassium ... I was able to perform the following experiment: One wraps a Lumière photographic plate with a bromide emulsion in two sheets of very thick black paper, such that the plate does not become clouded upon being exposed to the sun for a day. One places on the sheet of paper, on the outside, a slab of the phosphorescent substan...But erroneously thinks the Sun is an important part of the experiment involving phosphorous.