Adapted from an image by Benjamin Couprie (public domain), via Wikimedia Commons.
1874–1949
André-Louis Debierne
Discovered actinium in 1899.
Element
89AcActinium
1899
In 1899 André-Louis Debierne, a colleague of the Curies, found a new radioactive element in the leftovers of pitchblende. He named it actinium, from the Greek for ray.
Keep exploring
Where the dates and stories on this page come from; each event on the timeline links to its own source.
- July scientist calendar (2015)Comptes Rendus Chimie
- ActiniumRoyal Society of Chemistry
- André-Louis DebierneWikipedia