Portrait of Niels Bohr
The Niels Bohr Archive, Copenhagen
Niels Bohr
Niels Bohr was a Danish physicist who lived between 1885-1962. He investigated atomic structure, modifying Rutherford's old model of an atom by confining electrons to orbits of specific radii. Bohr also claimed that an atom's chemical properties are determined only by the valence (outermost) electrons.
After participating in the Manhattan Project, which produced the first nuclear bomb, Bohr spent the later years of his life promoting peaceful uses of atomic energy.
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