How was Antoine Henri Becquerel awarded the Nobel Prize?

Name: Antoine Henri Becquerel. 
Country: France.
Date of Birth: 15 December 1852.
Died: 25 August 1908.
The subject of Study: Radiation, Radioactivity uranium.
Noble Prize Year: Nobel Prize for Physics in 1903 for their research on the discovered radioactivity through his investigations of uranium and other substances.