span | 1 span | 2 span | 3 span | 4 span | 5 span | 6 span | 7 span | 8 span | 9 span | 10 span | 11 span | 12 span | 13 span | 14 span | 15 span | 16 span | 17 span | 18 span | 19 span | 20 span | 21 span | 22 span | 23 span | 24 span | 25 span | 26 span | 27 span | 28 span | 29 span | 30 span | 31 span | 32 span | 33 span | 34 span | 35 span | 36 span | 37 span | 38 span | 39 span | 40 span | 41 span | 42 span | 43 span | 44 span | 45 span | 46 span | 47 span | 48 span | 49 span | 50 span | 51 span | 52 span | 53 span | 54 span | 55 span | 56 span | 57 span | 58 span | 59 span | 60 span | 61 span | 62 span | 63 span | 64 span | 65 span | 66 span | 67 span | 68 span | 69 span | 70 span | 71 span | 72 span | 73 span | 74 span | 75 span | 76 span | 77 span | 78 span | 79 span | 80 span | 81 span | 82 span | 83 span | 84 span | 85 span | 86 span | 87 span | 88 span | 89 span | 90 span | 91 span | 92 span | 93 span | 94 span | 95 span | 96 span | 97 span | 98 span | 99 span | 100 span |
spat | 2.286 × 10-13 S | 4.572 × 10-13 S | 6.858 × 10-13 S | 9.144 × 10-13 S | 1.143 × 10-12 S | 1.3716 × 10-12 S | 1.6002 × 10-12 S | 1.8288 × 10-12 S | 2.0574 × 10-12 S | 2.286 × 10-12 S | 2.5146 × 10-12 S | 2.7432 × 10-12 S | 2.9718 × 10-12 S | 3.2004 × 10-12 S | 3.429 × 10-12 S | 3.6576 × 10-12 S | 3.8862 × 10-12 S | 4.1148 × 10-12 S | 4.3434 × 10-12 S | 4.572 × 10-12 S | 4.8006 × 10-12 S | 5.0292 × 10-12 S | 5.2578 × 10-12 S | 5.4864 × 10-12 S | 5.715 × 10-12 S | 5.9436 × 10-12 S | 6.1722 × 10-12 S | 6.4008 × 10-12 S | 6.6294 × 10-12 S | 6.858 × 10-12 S | 7.0866 × 10-12 S | 7.3152 × 10-12 S | 7.5438 × 10-12 S | 7.7724 × 10-12 S | 8.001 × 10-12 S | 8.2296 × 10-12 S | 8.4582 × 10-12 S | 8.6868 × 10-12 S | 8.9154 × 10-12 S | 9.144 × 10-12 S | 9.3726 × 10-12 S | 9.6012 × 10-12 S | 9.8298 × 10-12 S | 1.00584 × 10-11 S | 1.0287 × 10-11 S | 1.05156 × 10-11 S | 1.07442 × 10-11 S | 1.09728 × 10-11 S | 1.12014 × 10-11 S | 1.143 × 10-11 S | 1.16586 × 10-11 S | 1.18872 × 10-11 S | 1.21158 × 10-11 S | 1.23444 × 10-11 S | 1.2573 × 10-11 S | 1.28016 × 10-11 S | 1.30302 × 10-11 S | 1.32588 × 10-11 S | 1.34874 × 10-11 S | 1.3716 × 10-11 S | 1.39446 × 10-11 S | 1.41732 × 10-11 S | 1.44018 × 10-11 S | 1.46304 × 10-11 S | 1.4859 × 10-11 S | 1.50876 × 10-11 S | 1.53162 × 10-11 S | 1.55448 × 10-11 S | 1.57734 × 10-11 S | 1.6002 × 10-11 S | 1.62306 × 10-11 S | 1.64592 × 10-11 S | 1.66878 × 10-11 S | 1.69164 × 10-11 S | 1.7145 × 10-11 S | 1.73736 × 10-11 S | 1.76022 × 10-11 S | 1.78308 × 10-11 S | 1.80594 × 10-11 S | 1.8288 × 10-11 S | 1.85166 × 10-11 S | 1.87452 × 10-11 S | 1.89738 × 10-11 S | 1.92024 × 10-11 S | 1.9431 × 10-11 S | 1.96596 × 10-11 S | 1.98882 × 10-11 S | 2.01168 × 10-11 S | 2.03454 × 10-11 S | 2.0574 × 10-11 S | 2.08026 × 10-11 S | 2.10312 × 10-11 S | 2.12598 × 10-11 S | 2.14884 × 10-11 S | 2.1717 × 10-11 S | 2.19456 × 10-11 S | 2.21742 × 10-11 S | 2.24028 × 10-11 S | 2.26314 × 10-11 S | 2.286 × 10-11 S |
A span is the distance measured by a human hand, from the tip of the thumb to the tip of the little finger. In ancient times, a span was considered to be half a cubit. Sometimes the distinction is made between the great span (thumb to little finger) and little span (index finger to little finger).
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
span | span | ≡ 9 in | = 0.2286 m | Imperial/US |
spans | spats | spans | spats |
---|---|---|---|
1 | = 2.286E-13 | 4 | = 9.144E-13 |
1.5 | = 3.429E-13 | 4.5 | = 1.0287E-12 |
2 | = 4.572E-13 | 5 | = 1.143E-12 |
2.5 | = 5.715E-13 | 5.5 | = 1.2573E-12 |
3 | = 6.858E-13 | 6 | = 1.3716E-12 |
The spat (symbol S) is also an obsolete unit of distance used in astronomy. It is equal to 1000000000 kilometres (1 Tm or 1012 m). It is about 6.6846 astronomical units (AU), 1.057×10−4 light-years or3.240×10−5 parsecs.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
spat | S | ≡ 1×1012 m | ≡ 1×1012 m | Science - Astronomy (Length) |
spats | spans | spats | spans |
---|---|---|---|
1 | = 4374453193350.8 | 4 | = 17497812773403 |
1.5 | = 6561679790026.2 | 4.5 | = 19685039370079 |
2 | = 8748906386701.7 | 5 | = 21872265966754 |
2.5 | = 10936132983377 | 5.5 | = 24059492563430 |
3 | = 13123359580052 | 6 | = 26246719160105 |
spans | spats |
---|---|
1 | = 2.286 × 10-13 |
4,374,453,193,350.8 | = 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 …) |