Precision in the measurement of time

Precision in the measurement of time

Suppose that the wall clock was referring to the 9:00 time which indicate your watch to 8:55, what two hours more accurate in determining the time?

The accuracy in the measurement of time is essential in our daily lives, the deadlines time used a lot from us, and also processes travel through space and transport and navigation systems (GPS) depends on hours of accuracy, hence the need to hours standard reliable like an hour cesium standard .

Standard cesium clock: is one of the atomic clocks that meet this need; it operates on a measurement of the number of vibrations; any number of times that change the corn used at the level of capacity.

These vibrations occur for corn energy very quickly and regularly, so they are used to set the standard second 1 s which is equal to the time it takes 9,192,631,770 vibrations.

The outer energy level of the cesium atom has one electron spins detects round, and behaves like a magnet infinitely small.

The same applies to the nucleus;, where is all of the electron and the nucleus together, so that lined both poles similar to them once, and the different poles again.

If similar poles lined the cesium atom in the level of energy levels, while if different poles are lined up corn in another energy level.

Hour (NIST-F1) cesium in (NIST) laboratories in Boulder, Colorado of the most accurate clocks in the world.

How it works cesium clock? Composed hour cesium from cesium atoms, and device vibrations made of crystal quartz, generates microwave, and when equal frequency microwave device with the natural frequency of the cesium atoms, a large number of cesium atoms change from levels capacity, including that the natural frequency of the cesium 9192631770 pulse, it means that There 9192631770 changed between the energy levels of the cesium atoms in every second.

And here comes the accurate measurement of time this time.