Search results
3 days ago · In atomic physics, the atomic spectral lines correspond to transitions (quantum leaps) between quantum states of an atom. These states are labeled by a set of quantum numbers summarized in the term symbol and usually associated with particular electron configurations, i.e., by occupation schemes of atomic orbitals (for example, 1s 2 2s 2 2p 6 ...
Sep 5, 2024 · [118] [119] Present-day physics explains the transduction between frequencies in the presence of atoms by their quantum excitability, following Einstein. Planck believed that in a cavity with perfectly reflecting walls and with no matter present, the electromagnetic field cannot exchange energy between frequency components. [ 120 ]
5 days ago · Since the energy scale of inflation and the Planck scale are relatively close, some of the quantum fluctuations that have made up the structure in our universe were smaller than the Planck length before inflation. Therefore, there ought to be corrections from Planck-scale physics, in particular the unknown quantum theory of gravity.
5 days ago · In quantum mechanics, action and quantum-mechanical phase are related via the Planck constant, and the principle of stationary action can be understood in terms of constructive interference of wave functions. In 1948, Feynman discovered the path integral formulation extending the principle of least action to quantum mechanics for electrons and ...
Aug 24, 2024 · Max Planck (born April 23, 1858, Kiel, Schleswig [Germany]—died October 4, 1947, Göttingen, Germany) was a German theoretical physicist who originated quantum theory, which won him the Nobel Prize for Physics in 1918.
4 days ago · Max Born The statistical interpretation of quantum mechanics. Nobel Lecture – 11 December 1954. Physics in My Generation: A Selection of Papers (Pergamon, 1956) [108] Physik im Wandel meiner Zeit (Vieweg, 1957) Principles of Optics: Electromagnetic Theory of Propagation, Interference and Diffraction of Light, [109] with Emil Wolf.
5 days ago · Density functional theory (DFT) is a computational quantum mechanical modelling method used in physics, chemistry and materials science to investigate the electronic structure (or nuclear structure) (principally the ground state) of many-body systems, in particular atoms, molecules, and the condensed phases.
