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2nd (1st Pomeranian) Grenadiers
A second is the base unit of time in the International System of Units (SI). Second, Seconds or 2nd may also refer to: Mathematics * 2 (number), as an ordinal (also written as ''2nd'' or ''2d'') * Minute and second of arc, Second of arc, an angular measurement unit, of a degree * Seconds (angle), units of angular measurement Music Notes and intervals * Augmented second, an interval in classical music * Diminished second, unison * Major second, a whole tone * Minor second, semitone * Neutral second one-and-a-half semitones Albums and EPs * 2nd (The Rasmus EP), ''2nd'' (The Rasmus EP), 1996 * Second (Baroness EP), ''Second'' (Baroness EP), 2005 * Second (Raye EP), ''Second'' (Raye EP), 2014 * ''The Second'', second studio album by rock band Steppenwolf * Seconds (The Dogs D'Amour album), ''Seconds'' (The Dogs D'Amour album), released in 2000 * Seconds (Kate Rogers album), ''Seconds'' (Kate Rogers album), released in 2005 * Seconds (Tim Berne album), ''Seconds'' (Tim B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Second
The second (symbol: s) is the unit of time in the International System of Units (SI), historically defined as 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). The current and formal definition in the International System of Units ( SI) is more precise:The second ..is defined by taking the fixed numerical value of the caesium frequency, Δ''ν''Cs, the unperturbed ground-state hyperfine transition frequency of the caesium 133 atom, to be when expressed in the unit Hz, which is equal to s−1. This current definition was adopted in 1967 when it became feasible to define the second based on fundamental properties of nature with caesium clocks. Because the speed of Earth's rotation varies and is slowing ever so slightly, a leap second is added at irregular intervals to civil time to keep clocks in sync with Earth's rotation. Uses Analog clocks and watches often ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |