"I can not let you escape, Squidward. I'm adding another demon core to your confinement until you calm down." This short but simple one-liner viral meme's made for a few laughs recently.

Experiments on a so-called "demon core" of plutonium caused the deaths of two Manhattan Project physicists. Both scientists died after their hands slipped, causing the core to release deadly ...

The so-called Demon Core was a cursed object, a 6.2 kilogram mass of plutonium intended to be installed in a nuclear weapon. Instead, slapdash experimental techniques saw it feature in several ...

Following the end of World War 2 and the devastating impacts of the Hiroshima and Nagasaki nuclear bombings, the Cold War was looming. The immense destruction and power promised by atomic bombs ...

The fabled Demon Core was a radioactive plutonium sphere housed in a beryllium hemisphere. By holding the hemisphere in place with one hand and levering it with a screwdriver in the other ...

That was the end of a 14-pound metallic sphere that had killed two scientists not 11 months before. This is the true story of the Demon Core.

Unlike the first two cores, however, the third one — one that would later earn the nickname “the demon core” — had a ring around the flat surfaces to contain nuclear flux during implosion.

The Manhattan Project that built the atomic bomb wasn't without its own dangers. Experiments on a so-called "demon core" of plutonium caused the deaths of two Manhattan Project physicists. Both ...