The clocks not only used seeing the accurate time but they are also used for the decoration purpose. For the blank places on the wall and shelf, clocks are the right choice. Clock can be digital or analog. Many people are seen attracted towards digital clock because of their preciseness. Atomic or radioactive clocks are also introduced as they have a special feature which automatically updates the time once a day. So you don’t have to worry about changing or updating the time. They are accurate to the seconds and are usually six digits model displaying seconds, minutes and hours. These atomic clocks are available in both faces analog clock and LCD (Liquid Color Display) as digital clock. Atomic word is used because of the semiconductor crystal used for the atomic nature of timing and this also the reason why people say they are radioactive.

Radioactive Clocks
(Radioactive
Clocks)

The radioactive material used in these clocks is cesium-133. But the question arises why only cesium-133 is used? Despite of the fact that cesium-133 is a radioactive material and can be harmful for human but in 13th General conference in 1967 on weight and measures cesium clock is declared as a standard for second. Time taken by 9,192,631,770 oscillations of the light which is emitted by cesium-133 atom is a second.

The main reasons for using Cesium-133 in these clock are
• It has high valence shell electrons
• It is a stable element
• It has lesser number of valence electrons so that it produces reliable photon frequency.

These clocks can also provide other services like temperature measurement. They are worth considering if you are going to choose new clock. They are affordable, attractive and can be found in any design. They are elegant, functional and will also give you reliable time.