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Convert Day (Sidereal) to Second [s] - Online Unit Converter

Easily convert Day (Sidereal) to Second [s] using our convenient online unit converter. Enter the day (sidereal) value and get an instant and accurate conversion to Second.

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Please provide values below to convert Day Sidereal To Second, or vice versa.
Day Sidereal
Interchange
Second
Result:

day (sidereal)

second [s]

Definition:

The second [s] is the base unit of time in the International System of Units (SI). It is defined as the duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium-133 atom.

History/Origin:

The concept of the second as a unit of time can be traced back to ancient civilizations, including the Babylonians, Egyptians, and Greeks. However, the modern definition of the second is based on the work of Louis Essen and his team at the National Physical Laboratory in the United Kingdom in the 1950s. They developed an atomic clock that used the vibrations of a caesium-133 atom to keep time, and this led to the development of the current definition of the second in 1967.

Current use:

The second is used as a base unit of time in the International System of Units (SI) and is widely used in science, engineering, and everyday life. It is used to measure the duration of events, the frequency of oscillations, and the speed of objects. The second is also used in various derived units, such as meters per second (m/s), joules per second (J/s), and hertz (Hz).



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