Cesium Beam Atomic Clock

Cesium Beam Atomic Clock. A look at one of the original hp 5061a cesium beam atomic clock frequency standards used in the flying clocks experiment in the 1960's, that showed (not definitely at the time) that time dilation as part of the effect was not confirmed until a more precise run in 1971, again with the same clocks. The frequency of this atomic clock is in the microwave region of the electromagnetic spectrum and is a convenient one for locking a microwave oscillator.

Atomic Clocks from hyperphysics.phy-astr.gsu.edu

The clock separates cesium atoms of different energy levels by magnetic field. In fact, the official measurement of the length of a second is determined by the frequency needed to make electrons jump between two specific energy levels in a cesium atom. Atomic clocks do not resemble ordinary clocks or watches.

During october 1971, four cesium beam atomic clocks were flown on regularly scheduled commercial jet flights around the world twice, once eastward and once westward, to test einstein's theory of relativity with macroscopic clocks.

First, a gas of cesium atoms is introduced into the clock's vacuum chamber. The atoms serve the same purpose as did pendulums or quartz crystals in earlier clocks. The two most commonly used atomic clocks in recent years have been the cesium clock and the rubidium clock. An atomic clock is a clock device (time standard) that uses a hyperfine transition frequency in the microwave, or electron transition frequency in the optical or ultraviolet region of the electromagnetic.

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The cesium clock is the most accurate type of clock yet developed.

Source: science.sciencemag.org

The unit of time will then be proportional to the period of the clock upon which its definition is.

Source: www.microsemi.com

The cesium clock is the most accurate type of clock yet developed.

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Atomic clocks are two types.

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Basically, it measures the frequency of microwaves needed to produce maximum.

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Atomic clocks precisely measure the ticks of atoms, essentially tossing cesium atoms upward, much like a fountain.

Source: www.worldtimeserver.com

Basically, it measures the frequency of microwaves needed to produce maximum.

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In practice, clocks are often based on phenomena which recur with almost uniform period.

Source: ids.si.edu

In fact, the official measurement of the length of a second is determined by the frequency needed to make electrons jump between two specific energy levels in a cesium atom.