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Even the Earth's rotation rate has more drift and variation in drift than an atomic clock due to tidal acceleration and other effects. The principle behind the atomic clock has enabled scientists to re-define the SI unit second in terms of exactly 9 192 631 770 oscillations of the caesium-133 atom. The precision of these oscillations allows ...
Clock synchronization is a topic in computer science and engineering that aims to coordinate otherwise independent clocks. Even when initially set accurately, real clocks will differ after some amount of time due to clock drift , caused by clocks counting time at slightly different rates.
When a pulse of N consecutive zero bits are sent, clock drift may cause the hardware to apparently detect N-1 zero bits or N+1 zero bits – both kinds of errors are called bit slip. [ 1 ] [ 2 ] Thus one prevents long strings without change via such devices as run length limited codes.
Clock-comparison experiments are tests of the theory of relativity and may refer to: Hafele–Keating experiment, comparing the drift in cesium beam atomic clocks on airplanes. Hughes–Drever experiment, comparing energy levels of nucleons or electrons; Optical cavity tests, comparing laser frequencies
An Italian 6 hour clock was developed in the 18th century, presumably to save power (a clock or watch striking 24 times uses more power). Another type of analog clock is the sundial, which tracks the sun continuously, registering the time by the shadow position of its gnomon .
Cairo Citadel Clock; Candle clock; Chemical clock; Chronometer watch; Cifra 3; Climate Clock; Clock angle problem; Clock chime; Clock drift; Clock network; Clock position; Clock synchronization; Clockkeeper; Comayagua cathedral clock; Computus clock; Conservation and restoration of clocks; Crazy Clock Game; Cuckoo clock in culture
Most reliable sources (e.g. ) seem to use "skew" to mean rate of change of offset (i.e. how fast/slow it runs" and "drift" to mean rate of change of skew (i.e. how stable a clock is). It's a pity that this article uses both terms to mean a range of things, and irritating that "clock skew" is used by the semiconductor industry to mean something ...
There are two types of violation that can be caused by clock skew. One problem is caused when the clock reaches the first register and the clock signal towards the second register travels slower than output of the first register into the second register - the output of the first register reaches the second register input faster and therefore is clocked replacing the initial data on the second ...