One of the important discoveries in chemistry of the last century was the understanding of the atomic shell structure and, in turn, of the periodic properties of elements at the level of quantum ...

An international research team has taken a decisive step toward a new generation of atomic clocks. At the European XFEL X-ray laser, the researchers have created a much more precise pulse generator ...

Most Germans associate the surname “von Weizsäcker” with the former German president Richard von Weizsäcker; physicists immediately think of his older brother, Carl Friedrich, however. He was a ...

An international research team has taken a decisive step toward a new generation of atomic clocks. The researchers have created a much more precise pulse generator based on the element scandium, which ...

Part of Operation Upshot-Knothole, was a 15-kiloton test fired from a 280-mm cannon on May 25, 1953 at the Nevada Proving Grounds. 72 years ago the U.S. Army carried out its first and only nuclear ...

The US Army fired a nuclear weapon from its atomic cannon for the first and last time 69 years ago. The cannon, initially named "Able Annie," was later renamed "Atomic Annie." During the May 25, 1953, ...

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72 years ago the U.S. Army carried out its first and only nuclear artillery test. The military actually made an atomic artillery shell, loaded it into a 280mm cannon and fired it. And it worked. Task ...

How big is an atomic bomb? It took a B-29 to carry the first one, dropped on Hiroshima, which may have weighed more than 10,000 Ibs. The Army’s announcement last week that it will abandon its ...