any theory predating quantum mechanics that encompassed Planck's radiation formula and a scheme for obtaining discrete energy states for atoms, as Bohr theory.
any theory that treats certain phenomena by the methods of quantum mechanics: a quantum theory of gravitation.
Quantum theory may mean: ... Bohr model or a theory; Quantum chemistry ·
Quantum field theory, a generic type of relativistic quantum theory, which
Quantum theory is the theoretical basis of modern physics that explains the
nature and behavior of matter and energy on the atomic and subatomic level.
Quantum theory (otherwise known as quantum physics or quantum mechanics) is
one of the two main planks of modern physics, along with general relativity, ...
By Martin Kelly , About.com GuideNovember 14, 2005 More »
quantum theory modern physical theory concerned with the emission and
absorption of energy by matter and with the motion of material particles;...
QUANTUM THEORY, also quantum mechanics, in physics, a theory based on
using the concept of the quantum unit to describe the dynamic properties of ...
May 25, 2014 ... Quantum mechanics (QM -- also known as quantum physics, or quantum theory)
is a branch of physics which deals with physical phenomena ...
Niels Bohr succeeds in constructing a theory of atomic structure based on
quantum ideas. 1919. Ernest Rutherford finds the first evidence for a proton. 1921
Apr 25, 2014 ... A new theory explains the seemingly irreversible arrow of time while yielding
insights into entropy, quantum computers, black holes, and the ...