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 |
decasecond | 0.1 das | 0.2 das | 0.3 das | 0.4 das | 0.5 das | 0.6 das | 0.7 das | 0.8 das | 0.9 das | 1 das | 1.1 das | 1.2 das | 1.3 das | 1.4 das | 1.5 das | 1.6 das | 1.7 das | 1.8 das | 1.9 das | 2 das | 2.1 das | 2.2 das | 2.3 das | 2.4 das | 2.5 das | 2.6 das | 2.7 das | 2.8 das | 2.9 das | 3 das | 3.1 das | 3.2 das | 3.3 das | 3.4 das | 3.5 das | 3.6 das | 3.7 das | 3.8 das | 3.9 das | 4 das | 4.1 das | 4.2 das | 4.3 das | 4.4 das | 4.5 das | 4.6 das | 4.7 das | 4.8 das | 4.9 das | 5 das | 5.1 das | 5.2 das | 5.3 das | 5.4 das | 5.5 das | 5.6 das | 5.7 das | 5.8 das | 5.9 das | 6 das | 6.1 das | 6.2 das | 6.3 das | 6.4 das | 6.5 das | 6.6 das | 6.7 das | 6.8 das | 6.9 das | 7 das | 7.1 das | 7.2 das | 7.3 das | 7.4 das | 7.5 das | 7.6 das | 7.7 das | 7.8 das | 7.9 das | 8 das | 8.1 das | 8.2 das | 8.3 das | 8.4 das | 8.5 das | 8.6 das | 8.7 das | 8.8 das | 8.9 das | 9 das | 9.1 das | 9.2 das | 9.3 das | 9.4 das | 9.5 das | 9.6 das | 9.7 das | 9.8 das | 9.9 das | 10 das |
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 | decaseconds | seconds | decaseconds |
---|---|---|---|
1 | ≡ 0.1 | 6 | ≡ 0.6 |
2 | ≡ 0.2 | 7 | ≡ 0.7 |
3 | ≡ 0.3 | 8 | ≡ 0.8 |
4 | ≡ 0.4 | 9 | ≡ 0.9 |
5 | ≡ 0.5 | 10 | ≡ 1 |
Decasecond is equal to 10second (unit of time), comes from a combination of the metric prefix deca (da) with the second (s). Plural name is decaseconds with symbol is das.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
decasecond | das | ≡ 10 second | ≡ 10 second | Metric system SI |
decaseconds | seconds | decaseconds | seconds |
---|---|---|---|
1 | ≡ 10 | 6 | ≡ 60 |
2 | ≡ 20 | 7 | ≡ 70 |
3 | ≡ 30 | 8 | ≡ 80 |
4 | ≡ 40 | 9 | ≡ 90 |
5 | ≡ 50 | 10 | ≡ 100 |
seconds | decaseconds |
---|---|
1 | ≡ 0.1 |
10 | ≡ 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 …) |