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Temperature is a physical quantity that quantitatively expresses the attribute of hotness or coldness. Temperature is measured with a thermometer. It reflects...

Plasma (from Ancient Greek πλάσμα (plásma) 'moldable substance') is one of four fundamental states of matter (the other three being solid, liquid, and...

General relativity, also known as the general theory of relativity and Einstein's theory of gravity, is the geometric theory of gravitation published by...

Erwin Rudolf Josef Alexander Schrödinger (UK: /ˈʃrɜːdɪŋə, ˈʃroʊdɪŋə/, US: /ˈʃroʊdɪŋər/; German: [ˈɛɐ̯vɪn ˈʃʁøːdɪŋɐ]; 12 August 1887 – 4 January 1961),...

Resonance is the phenomenon, pertaining to oscillatory dynamical systems, wherein amplitude rises are caused by an external force with time-varying amplitude...

In geochemistry, geophysics and nuclear physics, primordial nuclides, also known as primordial isotopes, are nuclides found on Earth that have existed...

A synchrotron is a particular type of cyclic particle accelerator, descended from the cyclotron, in which the accelerating particle beam travels around...

Georges Henri Joseph Édouard Lemaître (/ləˈmɛtrə/ lə-MET-rə; French: [ʒɔʁʒ ləmɛːtʁ] ; 17 July 1894 – 20 June 1966) was a Belgian Catholic priest, theoretical...

Freezing is a phase transition where a liquid turns into a solid when its temperature is lowered below its freezing point. In accordance with the internationally...

In physics and general relativity, gravitational redshift (known as Einstein shift in older literature) is the phenomenon that electromagnetic waves or...

Lithium burning is a nucleosynthetic process in which lithium is depleted in a star. Lithium is generally present in brown dwarfs and not in older low-mass...

Rudolf Ludwig Mössbauer (German spelling: Mößbauer; German pronunciation: [ˈʁuːdɔlf ˈmœsˌbaʊ̯ɐ] ; 31 January 1929 – 14 September 2011) was a German physicist...

Luboš Motl (Czech pronunciation: [ˈluboʃ ˈmotl̩]; born 5 December 1973) is a Czech physicist and blogger. He was an assistant professor in physics at Harvard...

Entropy is one of the few quantities in the physical sciences that require a particular direction for time, sometimes called an arrow of time. As one goes...

Coercivity, also called the magnetic coercivity, coercive field or coercive force, is a measure of the ability of a ferromagnetic material to withstand...

The nuclear drip line is the boundary beyond which atomic nuclei are unbound with respect to the emission of a proton or neutron. An arbitrary combination...

A synchrotron light source is a source of electromagnetic radiation (EM) usually produced by a storage ring, for scientific and technical purposes. First...

Gregory W. Moore is an American theoretical physicist who specializes in mathematical physics and string theory. Moore is a professor in the Physics and...

The spin qubit quantum computer is a quantum computer based on controlling the spin of charge carriers (electrons and electron holes) in semiconductor...

Anton Nikolayevich Kapustin (born November 10, 1971, Moscow) is a Russian-American theoretical physicist and the Earle C. Anthony Professor of Theoretical...

In optics and lens design, the Abbe number, also known as the V-number or constringence of a transparent material, is an approximate measure of the material's...

In optics, the Fraunhofer diffraction equation is used to model the diffraction of waves when plane waves are incident on a diffracting object, and the...

A sound level meter (also called sound pressure level meter (SPL)) is used for acoustic measurements. It is commonly a hand-held instrument with a microphone...

An astrophysical maser is a naturally occurring source of stimulated spectral line emission, typically in the microwave portion of the electromagnetic...

SOLEIL ("Sun" in French) is a synchrotron facility near Paris, France. It performed its first acceleration of electrons on May 14, 2006. The name SOLEIL...

The many-minds interpretation of quantum mechanics extends the many-worlds interpretation by proposing that the distinction between worlds should be made...

The Walter Schottky Institute (WSI) (German: Walter-Schottky-Institut) is a research center at the Technical University of Munich, dedicated to the physics...

Richard Van Evera Lovelace is an American astrophysicist and plasma physicist. He is best known for the discovery of the period of the pulsar in the Crab...

Dorin Mircea Stelian Poenaru (born April 9, 1936, Suiug, Bihor County) is a Romanian nuclear physicist and engineer. He contributed to the theory of heavy...

Antonio Ereditato (Napoli, 2 June 1955) is an Italian physicist, currently Research Professor at the University of Chicago, associate researcher at Fermilab...

Samarendra Nath Biswas (1 May 1926 – 4 January 2005) was an Indian theoretical physicist specialized in theoretical high energy physics, particle physics...

Barbara Sue Ryden (born May 2, 1961) is an American astrophysicist who is a Professor of Astronomy at Ohio State University. Her research considers the...

Cormac O'Raifeartaigh (Cormac O'Rafferty) is an Irish physicist based at Waterford Institute of Technology in Ireland. A solid-state physicist by training...

Surface magnon-polaritons (SMPs) are a type of quasiparticle  in condensed matter physics. They arise from the coupling of incident electromagnetic (EM)...

Anne C. Tropper (born 1954) is a Professor of Physics at the University of Southampton. Her work considers solid-state and semiconductor lasers; specifically...

Oil purification (transformer, turbine, industrial, etc.) removes oil contaminants in order to prolong oil service life. Contaminants and various impurities...