Search results
Results From The WOW.Com Content Network
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.
The following is a list of notable unsolved problems grouped into broad areas of physics. [1]Some of the major unsolved problems in physics are theoretical, meaning that existing theories seem incapable of explaining a certain observed phenomenon or experimental result.
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]
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).
Stephen Downes (born April 6, 1959) is a Canadian philosopher and commentator in the fields of online learning and new media.He has explored and promoted the educational use of computer and online technologies since 1995. [1]
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 ...