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Spin is an intrinsic form of angular momentum carried by elementary particles, and thus by composite particles such as hadrons, atomic nuclei, and atoms...

In quantum physics, a wave function (or wavefunction) is a mathematical description of the quantum state of an isolated quantum system. The most common...

The expansion of the universe is the increase in distance between gravitationally unbound parts of the observable universe with time. It is an intrinsic...

In the history of physics, aether theories (also known as ether theories) propose the existence of a medium, a space-filling substance or field as a transmission...

A thermal reservoir, also thermal energy reservoir or thermal bath, is a thermodynamic system with a heat capacity so large that the temperature of the...

Rolf Maximilian Sievert (Swedish: [ˈrɔlf maksɪˈmǐːlɪan ˈsǐːvɛʈ]; 6 May 1896 – 3 October 1966) was a Swedish medical physicist whose major contribution...

In fluid dynamics, hydrodynamic stability is the field which analyses the stability and the onset of instability of fluid flows. The study of hydrodynamic...

A quantum point contact (QPC) is a narrow constriction between two wide electrically conducting regions, of a width comparable to the electronic wavelength...

The Atwood machine (or Atwood's machine) was invented in 1784 by the English mathematician George Atwood as a laboratory experiment to verify the mechanical...

In high-energy physics, a pseudoscalar meson is a meson with total spin 0 and odd parity (usually notated as JP = 0− ). Pseudoscalar mesons are commonly...

In physics, Torricelli's equation, or Torricelli's formula, is an equation created by Evangelista Torricelli to find the final velocity of a moving object...

Optical conductivity is the property of a material which gives the relationship between the induced current density in the material and the magnitude of...

In theoretical physics, a global anomaly is a type of anomaly: in this particular case, it is a quantum effect that invalidates a large gauge transformation...

In physics, the Landau–Hopf theory of turbulence, named for Lev Landau and Eberhard Hopf, was until the mid-1970s,[clarification needed] the accepted theory...

Philip George Burke FRS (18 October 1932—4 June 2019) was a British theoretical and computational physicist who developed the R-matrix method for studying...

In high energy particle physics nucleon-lepton scattering, the semi-inclusive deep inelastic scattering (SIDIS) is a method to obtain information on the...

In ion trapping and atomic physics experiments, the Lamb Dicke regime (or Lamb Dicke limit) is a quantum regime in which the coupling (induced by an external...