Important-Learn about Physics

[Clifford Black]

Niels Henrik David Bohr (Danish: [ˈnels ˈboɐ̯ˀ]; 7 October 1885 – 18 November 1962) was a Danish physicist who made foundational contributions to understanding atomic structure and quantum theory, for which he received the Nobel Prize in Physics in 1922. Bohr was also a philosopher and a promoter of scientific research.

[Clifford Black]

The link for Bohr

http://en.wikipedia.org/wiki/Niels_Bohr

[Adisa]

On 8 December 1943,  Niels Bohr arrived in Washington, D.C., where he met with the director of the Manhattan Project, Brigadier General Leslie R. Groves, Jr. Niels Bohr visited Einstein and Pauli at the Institute for Advanced Study in Princeton, New Jersey, and went to Los Alamos in New Mexico, where the nuclear weapons were being designed.^[104]

The Pacific Proving Grounds was the name used to describe a number of sites in the Marshall Islands and a few other sites in the Pacific Ocean, used by the United States to conduct nuclear testing at various times between 1946 and 1962. In July 1947, after the first atomic weapons testing at Bikini Atoll, the United States entered into an agreement with the United Nations to govern the Trust Territory of the Pacific Islands as a strategic trusteeship territory.

The first use of the Pacific Proving Grounds was during Operation Crossroads, the first nuclear testing done after the atomic bombing of Hiroshima and Nagasaki. Two fission bombs, both with a yield of 21 kilotons, were detonated at the Bikini Atoll, one ("Able") from an altitude of 520 ft (158 m) on July 1, 1946, and another ("Baker") was detonated a depth of 90 ft (27 m) underwater on July 25. Both tests used a flotilla of obsolete vessels from World War II with the intent of learning the effects of atomic weapons on naval fleets. The "Baker" shot created a large condensation cloud and spread much more radioactive water onto the ships than was expected; many of the surviving ships became too "hot" to be used or decontaminated and eventually had to be sunk.