Clock that records time by vibrating cesium-133 atoms
A clock whose rate is controlled by the frequency of an internal motion within an atom. Time is now defined by a particular motion of an electron and nucleus within the cesium atom: the second is the interval for exactly 9,192,631,770 cycles of this motion.
An extremely accurate clock that is based on the vibrations of an atom or molecule. For more information see How atomic clocks work (How Stuff Works, USA); The most accurate clocks in the world (Miami University, USA); How atomic clocks work (Science Museum, UK).
The worldâ€(tm)s most accurate clock. Each GPS satellite has an atomic clock on-board, which is used by GPS receivers to calculate position.
An incredibly accurate clock using the regular vibration of atoms as a metronome. Atomic clocks lose only one second every three hundred thousand years or so.
a timepiece that derives its time scale from the vibration of atoms or molecules
a clock that keeps time using natural characteristic frequencies of atoms, such as cesium, hydrogen or rubidium
a clock that uses the resonance frequencies of atoms as its resonator
a device that produces electronic 'ticks' at a rate related to certain electromagnetic oscillations of atoms
an extremely accurate timekeeping device regulated by the natural regular oscillations of an atom or molecule
an extremely accurate timepiece, using the element cesium or rubidium to maintain an accuracy within one second in one million years
an extremely precise timekeeping device
a precision clock that uses radio frequencies to synchronize itself with the official U
a type of (A timepiece that shows the time of day) clock that uses an ((physics and chemistry) the smallest component of an
very precise clock that operates using the elements caesium or rubidium. caesium clock has an error of one second per million years. GPS satellites contain multiple caesium and rubidium clocks.
An atomic clock is a time counter, which is controlled by the oscillation frequency of certain atoms ...
maintenance free and perfect time precision clock, that synchronize it's exact time by radio control from (NIST) in Fort Collins, Colorado.
Atomic clocks are extremely accurate timekeeping devices that are regulated by the oscillations of specific atoms or molecules. GPS satellites employ these clocks to provide the most accurate possible time signals, which is the key to precise positioning. Some atomic clocks are estimated to be inaccurate by just 1 second per million years.
A very precise clock that operates using the elements cesium or rubidium. A cesium clock has an error of one second per million years. GPS satellites contain multiple cesium and rubidium clocks.
Atomic and molecular vibrations constitute the most regular of motions in nature, but most are at such a high frequency as to be unusable as time standards. Radio-frequency techniques are used to generate energy at the frequency of the atomic transition from a lower frequency generated by a quartz-crystal oscillator, while the atomic vibration controls the absolute frequency of oscillation, frequency division by electronic circuits being used to obtain the low frequency required to drive the clocks indicating absolute time Accuracy to less than one second error in 100,000 years is now available with the caesium atomic clock
An atomic clock is a type of clock that uses an atomic resonance frequency standard to feed its counter. Early atomic clocks were masers with attached equipment. Today's best atomic frequency standards (or clocks) are based on absorption spectroscopy of cold atoms in atomic fountains.