Second - Wikipedia
WebThe second (symbol: s) is the unit of time in the International System of Units (SI), historically defined as 1 ⁄ 86400 of a day – this factor derived from the division of the day first into 24 hours, then to 60 minutes and finally to 60 seconds each (24 × 60 × 60 = 86400).
Seconds Definition & Meaning - Merriam-Webster
Webspecifically : the base unit of time in the International System of Units that is equal to the duration of 9,192,631,770 periods of the radiation corresponding to the transition …
Convert Seconds - CalculateMe.com
Web1 Second ≈. 0.00027777778 Hours. result rounded. Decimal places. Seconds. A second is the base unit of time. Originally, it was based on the length of the day, but it has since been standardized based on the radiation wavelength of caesium-133. Common abbreviations: s, sec. Hours. An hour is a unit of time equal to 60 minutes, or 3,600 seconds.
Second - Simple English Wikipedia, the free encyclopedia
WebThe second (symbol: s ), is a unit of time. There are 60 seconds in a minute, 60 minutes in an hour, and 24 hours in a day. This tradition dates back to the Babylonian . In science, a second is the time it takes for a caesium atom to vibrate 9,192,631,770 (around 9 …
Seconds Converter - Omni Calculator
WebJan 18, 2024 · The seconds converter will automatically convert the time into the rest of the units. You can even use this calculator to do some inverse conversions - enter the time in any unit field, and our seconds converter will tell you the time value in seconds! Other relevant tools. We have more time converters for you to check out: Time unit converter;
Seconds (sec) - Time Conversions - CheckYourMath
WebA second is a unit of time. The symbol for second is sec.
SECONDS | English meaning - Cambridge Dictionary
Websecond noun. (Definition of seconds from the Cambridge Business English Dictionary © Cambridge University Press) Examples of seconds. seconds. Track 1-19 is 24 …
Second | Measurement, Timekeeping, Clock | Britannica
WebApr 29, 2024 · second, fundamental unit of time, now defined in terms of the radiation frequency at which atoms of the element cesium change from one state to another. The second was formerly defined as 1/86,400 of the mean solar day—i.e., the average period of rotation of the Earth on its axis relative to the Sun.
SECONDS | definition in the Cambridge English Dictionary
WebSECONDS meaning: 1. an extra amount of food that is given after the first amount has been eaten: 2. an extra amount…. Learn more.
Second - Definition, Meaning & Synonyms | Vocabulary.com
WebDefinitions of second. adjective. coming next after the first in position in space or time or degree or magnitude. synonyms: 2d, 2nd. ordinal. being or denoting a numerical order in a series. noun. following the first in an ordering or series. “he came in a close second ” …
Skip to content