The first concerns the nature of matter ... They have been given the names of materialism and idealism. The atomic theory propounded by Leucippus and Democritus regarded the smallest particles ...

Photo: Niels Bohr's research notes for his new atomic theory Rutherford's find came from ... hold only certain numbers of electrons -- the first shell holds no more than 2, the second shell ...

Mrs. Dwight D. Eisenhower smashed a bottle of champagne across the bow of the USS Nautilus today and launched the world's ...

Though they were not permitted to talk to anyone about their work, including each other, by 1945 some had figured out that they were in fact building an atomic bomb.

On July 16, 1945, at exactly 5:29:45 a.m., the world entered the atomic age, with the successful testing of the most powerful weapon known to man. "Gadget," the first atomic bomb — a 6-foot ...

OAK RIDGE, Tenn. (WATE) — A building at Y-12 that helped create the first atomic bombs is being demolished. Building 9201-2, also known as Alpha-2, is a 2.5-acre structure was built in 1944 to ...

In response to a question posed by an American historian, the U.S. military announced for the first time in 1983 that eight service members of the Army and two from the Navy died in the atomic bom ...

Atomic, Molecular and Optical Physics (commonly referred to ... of their potential exploitation for new ways to probe and manipulate matter. Experiments and theory also tackle the fundamental chemical ...