IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. The discovery of nuclear fission in ...

Planning the future needs of the U.S. nuclear weapons stockpile as well as the nuclear weapons complex depends in part on maintaining confidence in the long-term stability of the pit, or core, of ...

It’s widely known that a smoke detector is a good ionizing radiation source, as they contain a small amount of americium-241, a side product of nuclear reactors. But what about other sources? [Carl ...

Devoted fans can wait hours on the red carpet to get their favourite movie star’s autograph, but that’s nothing compared to acquiring the signature of plutonium-239. After 50 years of trying, ...

After 50 years of searching, physicists have spotted the fingerprint of radioactive plutonium, revealing the secrets of this complex molecule behind nuclear weapons. Subscribe to read this story ...

The clean-up of a decommissioned US nuclear weapons plant has unearthed one of the oldest known samples of man-made plutonium. Workers found roughly half a gram of weapons-grade plutonium-239 (Pu-239) ...

Update: Since publication, Jon Schwantes has discovered that a microgram sample of plutonium produced in 1942 by Glen Seaborg’s group at the University of California in Berkeley is also ...

One of the oldest known samples of plutonium has been dug up from a waste trench in Hanford, Wash., near the now-decommissioned nuclear production site along the Columbia River. During the process of ...