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Walter D. Knight (October 14, 1919 – June 28, 2000) was an American physicist. [ 1 ] [ 2 ] [ 3 ] He discovered the Knight shift , the effect that has been given his name. [ 2 ] [ 3 ] Knight shifts are frequency shifts of the nuclear magnetic resonance (NMR) in metals.
Since 1999 Knight has been a fellow of the Royal Society. [12] Knight was president of the Institute of Physics from 2011 to 2013; president in 2004 of Optica, the first non North American-based person to take the position; [13] and a fellow of the Royal Society. In addition he was a member of the council of the Royal Society.
The Knight shift is a shift in the nuclear magnetic resonance (NMR) frequency of a paramagnetic substance first published in 1949 by the UC Berkeley physicist Walter D. Knight. [ 1 ] [ 2 ] [ 3 ] For an ensemble of N spins in a magnetic induction field B → {\displaystyle {\vec {B}}} , the nuclear Hamiltonian for the Knight shift is expressed ...
This article is a list of notable unsolved problems in astronomy.Problems may be theoretical or experimental. Theoretical problems result from inability of current theories to explain observed phenomena or experimental results.
This timeline lists significant discoveries in physics and the laws of nature, including experimental discoveries, theoretical proposals that were confirmed experimentally, and theories that have significantly influenced current thinking in modern physics. Such discoveries are often a multi-step, multi-person process.
Knightsbridge Solutions was co-founded in 1994 by Ki Chan, Jay Desai, Terrence Ryan and Faisal Shah. Roderick S. Walker joined the board and became the company's president and CEO in 1999. [4] Headquartered in Chicago, it maintained offices in Houston, London, New York, San Francisco, and Washington, D.C.
The longest uncrossed (or nonintersecting) knight's path is a mathematical problem involving a knight on the standard 8×8 chessboard or, more generally, on a square n×n board. The problem is to find the longest path the knight can take on the given board, such that the path does not intersect itself.
Smith's Prize was the name of each of two prizes awarded annually to two research students in mathematics and theoretical physics at the University of Cambridge from 1769. [1] Following the reorganization in 1998, they are now awarded under the names Smith-Knight Prize and Rayleigh-Knight Prize .