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Há 19 horas · Glass is an amorphous ( non-crystalline) solid. Because it is often transparent and chemically inert, glass has found widespread practical, technological, and decorative use in window panes, tableware, and optics. Some common objects made of glass like "a glass" of water, "glasses", and "magnifying glass", are named after the material. Glass is ...
Há 19 horas · Quaternions in physics The finding of 1924 that in quantum mechanics the spin of an electron and other matter particles (known as spinors ) can be described using quaternions (in the form of the famous Pauli spin matrices) furthered their interest; quaternions helped to understand how rotations of electrons by 360° can be discerned from those by 720° (the " Plate trick ").
Há 19 horas · Quantum physics uses an operator-based wave equation often as a relativistic wave equation. Introduction [ edit ] The (two-way) wave equation is a hyperbolic partial differential equation describing waves, including traveling and standing waves ; the latter can be considered as linear superpositions of waves traveling in opposite directions.
Há 19 horas · Manhattan District The Trinity test of the Manhattan Project on 16 July 1945 was the first detonation of a nuclear weapon. Active 1942–1946 Disbanded 15 August 1947 Country United States United Kingdom Canada Branch U.S. Army Corps of Engineers Garrison/HQ Oak Ridge, Tennessee, U.S. Anniversaries 13 August 1942 Engagements Allied invasion of Italy Allied invasion of France Allied invasion of ...
Há 19 horas · Nobel laureates. Faculty of the University of California, Berkeley. James P. Allison, Nobel laureate (2018, medicine) George Akerlof, Nobel laureate (2001, economics) Luis Alvarez, Nobel laureate (1968, physics) Eric Betzig, Nobel laureate (2014, chemistry) Steven Chu, Nobel laureate (1997, physics) and 12th United States Secretary of Energy.
Há 19 horas · Cumulant. In probability theory and statistics, the cumulants κn of a probability distribution are a set of quantities that provide an alternative to the moments of the distribution. Any two probability distributions whose moments are identical will have identical cumulants as well, and vice versa. The first cumulant is the mean, the second ...
