Term Papers on Niels Henrik David Bohr

Term Paper Title	Niels Henrik David Bohr
# of Words	434
# of Pages (250 words per page double spaced)	1.74

Niels Henrik David Bohr

Niels Henrik David Bohr was born in 1805 in Copenhagen. He was the son of a physiology
professor, and was educated at the University of Copenhagen, where he earned his doctorate in
1911. That same year he went to Cambridge, England, to study nuclear physics under the British
physicist Sir Joseph John Thomson, but he soon moved to Manchester to work with another
British physicist, Ernest Rutherford.
     Bohr’s theory of atomic structure won him the Nobel Prize in physics in 1922. It was
published in papers between 1913 and 1915. His work drew on Rutherford’s nuclear model of the
atom, in which the atom is seen as a compact nucleus surrounded by a swarm of much lighter
electrons. Bohr’s atomic model made use of quantum theory and the Planck constant,  which is
the ratio between quantum size and radiation frequency. The model shows that an atom emits
electromagnetic radiation only when an electron in the atom jumps from one quantum level to
another. This model contributed greatly to future developments of theoretical atomic physics.
     In 1916 Bohr returned to the University of Copenhagen as a professor of physics, and in
1920 he was made director of the university’s newly formed Institute for Theoretical Physics.
There Bohr developed a theory relating quantum numbers to large systems that follow classical
laws, and made other major contributions to theoretical physics. Bohr’s work ...

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