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Definition of Second in Physics

Definition of Second


It is equal to the duration of 9,192,631,770 periods of radiation of Cesium-133 in ground state.


The perception of the world is changing Our thinking is shaped by several factors: education, personal experience, public opinion on certain issues. Books also have a powerful effect on him. This is especially true of literature on self-development, psychology, self-study. Books develop our thinking. They help to look at the world from the other side, to reconsider priorities, values, to set new goals.

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