second | 1 s | 2 s | 3 s | 4 s | 5 s | 6 s | 7 s | 8 s | 9 s | 10 s | 11 s | 12 s | 13 s | 14 s | 15 s | 16 s | 17 s | 18 s | 19 s | 20 s | 21 s | 22 s | 23 s | 24 s | 25 s | 26 s | 27 s | 28 s | 29 s | 30 s | 31 s | 32 s | 33 s | 34 s | 35 s | 36 s | 37 s | 38 s | 39 s | 40 s | 41 s | 42 s | 43 s | 44 s | 45 s | 46 s | 47 s | 48 s | 49 s | 50 s | 51 s | 52 s | 53 s | 54 s | 55 s | 56 s | 57 s | 58 s | 59 s | 60 s | 61 s | 62 s | 63 s | 64 s | 65 s | 66 s | 67 s | 68 s | 69 s | 70 s | 71 s | 72 s | 73 s | 74 s | 75 s | 76 s | 77 s | 78 s | 79 s | 80 s | 81 s | 82 s | 83 s | 84 s | 85 s | 86 s | 87 s | 88 s | 89 s | 90 s | 91 s | 92 s | 93 s | 94 s | 95 s | 96 s | 97 s | 98 s | 99 s | 100 s |
moment | 0.0111111 moment | 0.0222222 moment | 0.0333333 moment | 0.0444444 moment | 0.0555556 moment | 0.0666667 moment | 0.0777778 moment | 0.0888889 moment | 0.1 moment | 0.1111111 moment | 0.1222222 moment | 0.1333333 moment | 0.1444444 moment | 0.1555556 moment | 0.1666667 moment | 0.1777778 moment | 0.1888889 moment | 0.2 moment | 0.2111111 moment | 0.2222222 moment | 0.2333333 moment | 0.2444444 moment | 0.2555556 moment | 0.2666667 moment | 0.2777778 moment | 0.2888889 moment | 0.3 moment | 0.3111111 moment | 0.3222222 moment | 0.3333333 moment | 0.3444444 moment | 0.3555556 moment | 0.3666667 moment | 0.3777778 moment | 0.3888889 moment | 0.4 moment | 0.4111111 moment | 0.4222222 moment | 0.4333333 moment | 0.4444444 moment | 0.4555556 moment | 0.4666667 moment | 0.4777778 moment | 0.4888889 moment | 0.5 moment | 0.5111111 moment | 0.5222222 moment | 0.5333333 moment | 0.5444444 moment | 0.5555556 moment | 0.5666667 moment | 0.5777778 moment | 0.5888889 moment | 0.6 moment | 0.6111111 moment | 0.6222222 moment | 0.6333333 moment | 0.6444444 moment | 0.6555556 moment | 0.6666667 moment | 0.6777778 moment | 0.6888889 moment | 0.7 moment | 0.7111111 moment | 0.7222222 moment | 0.7333333 moment | 0.7444444 moment | 0.7555556 moment | 0.7666667 moment | 0.7777778 moment | 0.7888889 moment | 0.8 moment | 0.8111111 moment | 0.8222222 moment | 0.8333333 moment | 0.8444444 moment | 0.8555556 moment | 0.8666667 moment | 0.8777778 moment | 0.8888889 moment | 0.9 moment | 0.9111111 moment | 0.9222222 moment | 0.9333333 moment | 0.9444444 moment | 0.9555556 moment | 0.9666667 moment | 0.9777778 moment | 0.9888889 moment | 1 moment | 1.0111111 moment | 1.0222222 moment | 1.0333333 moment | 1.0444444 moment | 1.0555556 moment | 1.0666667 moment | 1.0777778 moment | 1.0888889 moment | 1.1 moment | 1.1111111 moment |
The second (symbol: s) (abbreviated s or sec) is the base unit of time in the International System of Units / Système International d'Unités (SI).
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
second | s | time of 9192631770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium 133 atom at 0 K(but other seconds are sometimes used in astronomy). Also that time it takes for light to travel a distance of 299792458 metres. | ≡ 1 second | Metric system SI |
seconds | moments | seconds | moments |
---|---|---|---|
1 | ≡ 0.011111111111111 | 6 | ≡ 0.066666666666667 |
2 | ≡ 0.022222222222222 | 7 | ≡ 0.077777777777778 |
3 | ≡ 0.033333333333333 | 8 | ≡ 0.088888888888889 |
4 | ≡ 0.044444444444444 | 9 | ≡ 0.1 |
5 | ≡ 0.055555555555556 | 10 | ≡ 0.11111111111111 |
A moment (momentum) was a medieval unit of time. The movement of a shadow on a sundial covered 40 moments in a solar hour.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
moment | ≡ 90 s | ≡ 90 s | Metric system SI |
moments | seconds | moments | seconds |
---|---|---|---|
1 | ≡ 90 | 6 | ≡ 540 |
2 | ≡ 180 | 7 | ≡ 630 |
3 | ≡ 270 | 8 | ≡ 720 |
4 | ≡ 360 | 9 | ≡ 810 |
5 | ≡ 450 | 10 | ≡ 900 |
seconds | moments |
---|---|
1 | ≡ 0.0111111 |
90 | ≡ 1 |
Symbol | Definition |
---|---|
≡ | exactly equal |
≈ | approximately equal to |
= | equal to |
digits | indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …) |