Convert second to quindecennial
Please provide values below to convert second [s] to quindecennial [None], or Convert quindecennial to second.
How to Convert Second to Quindecennial
1 s = 2.11253918760193e-09 None
Example: convert 15 s to None:
15 s = 15 × 2.11253918760193e-09 None = 3.16880878140289e-08 None
Second to Quindecennial Conversion Table
| second | quindecennial |
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Second
The second (symbol: s) is the base unit of time in the International System of Units (SI), used to measure durations and intervals.
History/Origin
The second was originally defined as 1/86400 of a mean solar day. It was later redefined in 1967 based on atomic properties, specifically as the duration of 9,192,631,770 periods of radiation corresponding to the transition between two hyperfine levels of the cesium-133 atom.
Current Use
The second is universally used in science, technology, and everyday life to quantify time intervals, synchronize clocks, and coordinate activities across various fields.
Quindecennial
A quindecennial is a period of fifteen years.
History/Origin
The term originates from Latin, where 'quindecim' means fifteen, and has been used historically to denote a fifteen-year interval, often in contexts like anniversaries or historical cycles.
Current Use
The term 'quindecennial' is rarely used in modern times; more common references to fifteen-year periods are made using 'quindecennial' mainly in historical or formal contexts, such as quinquennial (five-year) or sesquicentennial (150 years).