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In synchronous communications, the stream of data to be transferred is encoded as fluctuating voltage levels in one wire (the 'DATA'), and a periodic pulse of voltage on a separate wire (called the "CLOCK" or "STROBE") which tells the receiver "the current DATA bit is 'valid' at this moment in time".
Asynchronous communication at the data link layer or higher protocol layers is known as statistical multiplexing, for example Asynchronous Transfer Mode (ATM). In this case, the asynchronously transferred blocks are called data packets, for example ATM cells.
In physics, the no-communication theorem (also referred to as the no-signaling principle) is a no-go theorem in quantum information theory.It asserts that during the measurement of an entangled quantum state, it is impossible for one observer to transmit information to another observer, regardless of their spatial separation.
Since the announcement of Pons and Fleischmann in 1989, cold fusion has been considered to be an example of a pathological science. [15] Two panels convened by the US Department of Energy, one in 1989 and a second in 2004, did not recommend a dedicated federal program for cold fusion research. [16]
Renormalization is a collection of techniques in quantum field theory, statistical field theory, and the theory of self-similar geometric structures, that are used to treat infinities arising in calculated quantities by altering values of these quantities to compensate for effects of their self-interactions.
The Sociedad Mexicana de Física (SMF) (or Mexican Physics Society) is an association of physicists and other collaborators dedicated to contributing to research in different areas of physics, as well as organizing important national events related to physics, such as the Olimpiadas de Física (Physics Olympics) and the Encuentros de enseñanza (Meetings on teaching).
Katherine Johnson Johnson in 1983 Born Creola Katherine Coleman (1918-08-26) August 26, 1918 White Sulphur Springs, West Virginia, U.S. Died February 24, 2020 (2020-02-24) (aged 101) Newport News, Virginia, U.S. Other names Katherine Goble Education West Virginia State University (BS) Occupation Mathematician Employers NACA NASA (1953–1986) Known for Calculating trajectories for NASA ...
The Evolution of Physics: The Growth of Ideas from Early Concepts to Relativity and Quanta is a science book for the lay reader. Written by the physicists Albert Einstein and Leopold Infeld, it traces the development of ideas in physics.