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The speed of sound is the distance travelled per unit of time by a sound wave as it propagates through an elastic medium. At 20 °C (68 °F), the speed of...

In physics, power is the amount of energy transferred or converted per unit time. In the International System of Units, the unit of power is the watt,...

Photonics is a branch of optics that involves the application of generation, detection, and manipulation of light in form of photons through emission,...

Gustav Robert Kirchhoff (German: [ˈkɪʁçhɔf]; 12 March 1824 – 17 October 1887) was a German physicist and mathematician who contributed to the fundamental...

In the fields of Big Bang theory and cosmology, reionization is the process that caused electrically neutral atoms in the universe to reionize after the...

In computational chemistry, a water model is used to simulate and thermodynamically calculate water clusters, liquid water, and aqueous solutions with...

The (n-p) reaction, or (n,p) reaction, is an example of a nuclear reaction. It is the reaction which occurs when a neutron enters a nucleus and a proton...

In electrical engineering the term flux linkage is used to define the interaction of a multi-turn inductor with the magnetic flux as described by the Faraday's...

Silvan Samuel Schweber (10 April 1928 in Strasbourg – 14 May 2017) was a French-born American theoretical physicist and historian of science. In 1944 Schweber...

In physics, the principle of covariance emphasizes the formulation of physical laws using only those physical quantities the measurements of which the...

Theodore Theodorsen (January 8, 1897 – November 5, 1978) was a Norwegian-American theoretical aerodynamicist noted for his work at NACA (the forerunner...

Daniel Joseph Bradley FRS FInstP MRIA (18 January 1928 – 7 February 2010) was an Irish physicist, and Emeritus Professor of Optical Electronics, at Trinity...

The standard liter per minute (SLM or SLPM) is a unit of (molar or) mass flow rate of a gas at standard conditions for temperature and pressure (STP),...

John Hartley Brodie (May 6, 1969 – January 28, 2006), was an American theoretical physicist specializing in string theory. Diagnosed with bipolar disorder...

An LVDT (Linear Variable Differential Transformer) Variable Area Rotameter, is a meter designed to measure the flow rate of a fluid or gas.[citation needed]...