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The Hafele–Keating experimentwas a test of the theory of relativity. In 1971,[1]Joseph C. Hafele, a physicist, and Richard E. Keating, an astronomer, took four caesium-beam atomic clocksaboard commercial airliners. They flew twice around the world, first eastward, then westward, and compared the clocks in motion to stationary clocks at the ...
Clock rate. Microprocessor clock speed measures the number of pulses per second generated by an oscillator that sets the tempo for the processor. It is measured in hertz (pulses per second). In computing, the clock rate or clock speed typically refers to the frequency at which the clock generator of a processor can generate pulses, which are ...
The one-way speed. Unidirectional light path in the aberration of light. Although the average speed over a two-way path can be measured, the one-way speed in one direction or the other is undefined (and not simply unknown), unless one can define what is "the same time" in two different locations. To measure the time that the light has taken to ...
Instructions per second. Instructions per second ( IPS) is a measure of a computer 's processor speed. For complex instruction set computers (CISCs), different instructions take different amounts of time, so the value measured depends on the instruction mix; even for comparing processors in the same family the IPS measurement can be problematic.
AMD recently said that its $449 Ryzen 7 5800X3D was the world's fastest gaming processor, claiming that its 3D V-Cache would allow it to beat the Core i9-12900K. However, Intel has a good case ...
Decay time of muons: The time dilation formula is T=γ T0{\displaystyle T=\gamma \ T_{0}}, where T0is the proper timeof a clock comoving with the muon, corresponding with the mean decay time of the muon in its proper frame. As the muon is at rest in S′, we have γ=1 and its proper time T′0is measured. As it is moving in S, we have γ>1 ...
Serial Peripheral Interface ( SPI) is a de facto standard (with many variants) for synchronous serial communication, used primarily in embedded systems for short-distance wired communication between integrated circuits . SPI uses a master–slave architecture, described here with the terms "main" and "sub", [ note 2] [ 1] where one [ note 3 ...
Jitter. In electronics and telecommunications, jitter is the deviation from true periodicity of a presumably periodic signal, often in relation to a reference clock signal. In clock recovery applications it is called timing jitter. [ 1] Jitter is a significant, and usually undesired, factor in the design of almost all communications links .
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