19 juin 1896 - Henri Becquerel
Description:
a French physicist, reads of William Roentgen's experiments with X-rays, and learns that they can cause certain materials to fluoresce.Becquerel eventually discovers that the uranium in this compound is the magic ingredient. All compounds with uranium in them will fog a photographic plate; compounds without uranium will not. Becquerel therefore calls the new radiation "uranic rays".
Ajouté au bande de temps:
Date:
19 juin 1896
Maintenaint
~ Il y a 129 ans