Time
Time, abbreviated as t, is a measurement to define a continuous series of events.
Time formulas
| \(\large{ t = \frac { v_f \;+\; v_i } { a } }\) | |
| \(\large{ t = \frac { d } { s } }\) | |
| \(\large{ t = \frac { d } { v } }\) | |
| \(\large{ t = \frac{F \; d}{P} }\) | |
| \(\large{ t = \frac{W}{P} }\) | |
| \(\large{ t = \frac { 2 \; \pi \; r } { v_c } }\) | (circular velocity) |
| \(\large{ t = \frac{ Fo \; l_{c}{^2} }{ \alpha } }\) | (Fourier number) |
| \(\large{ T = \frac { 1 } { f } }\) | (Frequency) |
| \(\large{ t = \sqrt { \frac {4\; \pi^2 \;r_s^3} {G\;m} } }\) | (Kepler's third law) |
| \(\large{ t = \frac{d_l}{a_s} }\) | (lightening strike distance) |
Where:
\(\large{ t }\) = time
\(\large{ T }\) = time period, the time required for one cycle or wave occillation
\(\large{ a }\) = acceleration
\(\large{ l_c }\) = characteristic length
\(\large{ v_c }\) = circular velocity
\(\large{ d }\) = displacement
\(\large{ F }\) = force
\(\large{ Fo }\) = Fourier number
\(\large{ f }\) = frequency
\(\large{ d_l }\) = lightening strike distance
\(\large{ m }\) = mass (planet)
\(\large{ \pi }\) = Pi
\(\large{ P }\) = power
\(\large{ r }\) = radius
\(\large{ r_s }\) = radius (satellite mean orbital)
\(\large{ s }\) = speed
\(\large{ a_s }\) = speed of sound
\(\large{ \alpha }\) (Greel symbol alpha) = thermal diffusivity
\(\large{ G }\) = universal gravitational constant
\(\large{ v }\) = velocity
\(\large{ v_f }\) = final velocity
\(\large{ v_i }\) = initial velocity
\(\large{ W }\) = work
Conversion Table
| Time Conversion Conversion Table | ||
|---|---|---|
| Multiply | By | To get |
| time (seconds) | 0,000 000 000 000 000 000 000 001 | yoctosecond (ys) |
| 0,000 000 000 000 000 000 001 | zeptosecond (zs) | |
| 0,000 000 000 000 000 001 | attosecond (as) | |
| 0,000 000 000 000 001 | femtosecond (fs) | |
| 0,000 000 000 001 (trillionth) | picosecond (ps) | |
| 0,000 000 001 (billionth) | nanosecond (ns) | |
| 0,000 001 (millionth) | microsecond (us) | |
| 0,001 (thousandth) | millisecond (ms) | |
| 0.01 (hundredth) | centisecond (cs) | |
| 1 | second (s) | |
| time (year) | 60 seconds | 1 minute (mean solar) |
| 59.83617 seconds | 1 minute (sidereal) | |
| 60 minutes | 1 hour | |
| 24 hours | 1 day | |
| 3,600 seconds | 1 hour | |
| 86,400 seconds | 1 day (mean solar) | |
| 86,164.09 seconds | 1 day (sidereal) | |
| 7 days | 1 week | |
| 168 hours | 1 week | |
| 14 days | 1 fortnight | |
| 28, 29, 30 or 31 days | 1 month | |
| 365 days | 1 year | |
| 366 days | 1 leap year | |
| 12 months | 1 year | |
| 31,536,000 seconds | 1 year (calendar) | |
| 31,558,150 seconds | 1 year (sidereal) | |
| 31,556,930 seconds | 1 year (tropical) | |
| 9,460,550,000,000,000 meters | 1 light year | |
| 299,792,458 meters per sec (m/s) | speed of light | |
| parsec | approx. 3.25 light years | |
| time (years) | biennial | 2 |
| triennial | 3 | |
| quadrennial | 4 | |
| quinquennial | 5 | |
| hexennial | 6 | |
| septennial | 7 | |
| octennial | 8 | |
| novennial | 9 | |
| decennial | 10 | |
| hendecennial | 11 | |
| duodecennial | 12 | |
| tredecennial | 13 | |
| quindecennial | 15 | |
| sextodecennial | 16 | |
| septendecennial | 17 | |
| vigintennial | 20 | |
| trigentennial | 30 | |
| quadragennial | 40 | |
| quinquagenary | 50 | |
| sexagennial | 60 | |
| septuagennial | 70 | |
| octogintennial | 80 | |
| nonagintennial | 90 | |
| centennial | 100 | |
| sesquicentennial | 150 | |
| bicentennial | 200 | |
| tercentennial | 300 | |
| quatercentenary | 400 | |
| quincentennial | 500 | |
| sexcentennial | 600 | |
| septcentennial | 700 | |
| octocentennial | 800 | |
| nanacentennial | 900 | |
| millenial | 1,000 | |