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In physics, a parity transformation (also called parity inversion) is the flip in the sign of one spatial coordinate. In three dimensions, it can also...

A Faraday cage or Faraday shield is an enclosure used to block some electromagnetic fields. A Faraday shield may be formed by a continuous covering of...

Sir Martin Ryle FRS (27 September 1918 – 14 October 1984) was an English radio astronomer who developed revolutionary radio telescope systems (see e.g...

Helmholtz resonance, also known as wind throb, refers to the phenomenon of air resonance in a cavity, an effect named after the German physicist Hermann...

The Greisen–Zatsepin–Kuzmin limit (GZK limit or GZK cutoff) is a theoretical upper limit on the energy of cosmic ray protons traveling from other galaxies...

Look up rheometry in Wiktionary, the free dictionary. Rheometry (from Greek ῥέος (rheos) 'stream') generically refers to the experimental techniques used...

The Dirac sea is a theoretical model of the electron vacuum as an infinite sea of electrons with negative energy, now called positrons. It was first postulated...

The International System of Quantities (ISQ) is a standard system of quantities used in physics and in modern science in general. It includes basic quantities...

In the 19th century, the theory of the luminiferous aether as the hypothetical medium for the propagation of light waves was widely discussed. The aether...

Ronald Ernest Aitchison (29 December 1921 – 9 March 1996) was an Australian physicist and electronics engineer who contributed to a range of fields and...

Bogdan Cvete Maglić (anglicized Maglich, August 5, 1928 – November 25, 2017) was a Serbian-American experimental nuclear physicist and the leading advocate...

An ultrafast monochromator is a monochromator that preserves the duration of an ultrashort pulse (in the femtosecond, or lower, time-scale). Monochromators...