light-hour | 1 light-hour | 2 light-hour | 3 light-hour | 4 light-hour | 5 light-hour | 6 light-hour | 7 light-hour | 8 light-hour | 9 light-hour | 10 light-hour | 11 light-hour | 12 light-hour | 13 light-hour | 14 light-hour | 15 light-hour | 16 light-hour | 17 light-hour | 18 light-hour | 19 light-hour | 20 light-hour | 21 light-hour | 22 light-hour | 23 light-hour | 24 light-hour | 25 light-hour | 26 light-hour | 27 light-hour | 28 light-hour | 29 light-hour | 30 light-hour | 31 light-hour | 32 light-hour | 33 light-hour | 34 light-hour | 35 light-hour | 36 light-hour | 37 light-hour | 38 light-hour | 39 light-hour | 40 light-hour | 41 light-hour | 42 light-hour | 43 light-hour | 44 light-hour | 45 light-hour | 46 light-hour | 47 light-hour | 48 light-hour | 49 light-hour | 50 light-hour | 51 light-hour | 52 light-hour | 53 light-hour | 54 light-hour | 55 light-hour | 56 light-hour | 57 light-hour | 58 light-hour | 59 light-hour | 60 light-hour | 61 light-hour | 62 light-hour | 63 light-hour | 64 light-hour | 65 light-hour | 66 light-hour | 67 light-hour | 68 light-hour | 69 light-hour | 70 light-hour | 71 light-hour | 72 light-hour | 73 light-hour | 74 light-hour | 75 light-hour | 76 light-hour | 77 light-hour | 78 light-hour | 79 light-hour | 80 light-hour | 81 light-hour | 82 light-hour | 83 light-hour | 84 light-hour | 85 light-hour | 86 light-hour | 87 light-hour | 88 light-hour | 89 light-hour | 90 light-hour | 91 light-hour | 92 light-hour | 93 light-hour | 94 light-hour | 95 light-hour | 96 light-hour | 97 light-hour | 98 light-hour | 99 light-hour | 100 light-hour |
foot | 3,540,855,803,149.6 ft | 7,081,711,606,299.2 ft | 10 622 567 409 449 ft | 14 163 423 212 598 ft | 17 704 279 015 748 ft | 21 245 134 818 898 ft | 24 785 990 622 047 ft | 28 326 846 425 197 ft | 31 867 702 228 346 ft | 35 408 558 031 496 ft | 38 949 413 834 646 ft | 42 490 269 637 795 ft | 46 031 125 440 945 ft | 49 571 981 244 094 ft | 53 112 837 047 244 ft | 56 653 692 850 394 ft | 60 194 548 653 543 ft | 63 735 404 456 693 ft | 67 276 260 259 843 ft | 70 817 116 062 992 ft | 74 357 971 866 142 ft | 77 898 827 669 291 ft | 81 439 683 472 441 ft | 84 980 539 275 591 ft | 88 521 395 078 740 ft | 92 062 250 881 890 ft | 95 603 106 685 039 ft | 99 143 962 488 189 ft | 1.0268481829134 × 1014 ft | 1.0622567409449 × 1014 ft | 1.0976652989764 × 1014 ft | 1.1330738570079 × 1014 ft | 1.1684824150394 × 1014 ft | 1.2038909730709 × 1014 ft | 1.2392995311024 × 1014 ft | 1.2747080891339 × 1014 ft | 1.3101166471654 × 1014 ft | 1.3455252051969 × 1014 ft | 1.3809337632283 × 1014 ft | 1.4163423212598 × 1014 ft | 1.4517508792913 × 1014 ft | 1.4871594373228 × 1014 ft | 1.5225679953543 × 1014 ft | 1.5579765533858 × 1014 ft | 1.5933851114173 × 1014 ft | 1.6287936694488 × 1014 ft | 1.6642022274803 × 1014 ft | 1.6996107855118 × 1014 ft | 1.7350193435433 × 1014 ft | 1.7704279015748 × 1014 ft | 1.8058364596063 × 1014 ft | 1.8412450176378 × 1014 ft | 1.8766535756693 × 1014 ft | 1.9120621337008 × 1014 ft | 1.9474706917323 × 1014 ft | 1.9828792497638 × 1014 ft | 2.0182878077953 × 1014 ft | 2.0536963658268 × 1014 ft | 2.0891049238583 × 1014 ft | 2.1245134818898 × 1014 ft | 2.1599220399213 × 1014 ft | 2.1953305979528 × 1014 ft | 2.2307391559843 × 1014 ft | 2.2661477140157 × 1014 ft | 2.3015562720472 × 1014 ft | 2.3369648300787 × 1014 ft | 2.3723733881102 × 1014 ft | 2.4077819461417 × 1014 ft | 2.4431905041732 × 1014 ft | 2.4785990622047 × 1014 ft | 2.5140076202362 × 1014 ft | 2.5494161782677 × 1014 ft | 2.5848247362992 × 1014 ft | 2.6202332943307 × 1014 ft | 2.6556418523622 × 1014 ft | 2.6910504103937 × 1014 ft | 2.7264589684252 × 1014 ft | 2.7618675264567 × 1014 ft | 2.7972760844882 × 1014 ft | 2.8326846425197 × 1014 ft | 2.8680932005512 × 1014 ft | 2.9035017585827 × 1014 ft | 2.9389103166142 × 1014 ft | 2.9743188746457 × 1014 ft | 3.0097274326772 × 1014 ft | 3.0451359907087 × 1014 ft | 3.0805445487402 × 1014 ft | 3.1159531067717 × 1014 ft | 3.1513616648031 × 1014 ft | 3.1867702228346 × 1014 ft | 3.2221787808661 × 1014 ft | 3.2575873388976 × 1014 ft | 3.2929958969291 × 1014 ft | 3.3284044549606 × 1014 ft | 3.3638130129921 × 1014 ft | 3.3992215710236 × 1014 ft | 3.4346301290551 × 1014 ft | 3.4700386870866 × 1014 ft | 3.5054472451181 × 1014 ft | 3.5408558031496 × 1014 ft |
The light-hour is a unit of length useful in astronomy, telecommunications and relativistic physics. It is defined as the distance that light travels in free space in onehour, and is equal to exactly 1.0792528488×1012 metres.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
light-hour | ≡ 60 light-minutes | ≡ 1.0792528488×1012 m | Science - Astronomy (Length) |
light-hours | feet | light-hours | feet |
---|---|---|---|
1 | ≡ 3540855803149.6 | 4 | ≡ 14163423212598 |
1.5 | ≡ 5311283704724.4 | 4.5 | ≡ 15933851114173 |
2 | ≡ 7081711606299.2 | 5 | ≡ 17704279015748 |
2.5 | ≡ 8852139507874 | 5.5 | ≡ 19474706917323 |
3 | ≡ 10622567409449 | 6 | ≡ 21245134818898 |
The foot (pl. feet; abbreviation: ft; symbol: ′, the prime symbol) is a unit of length in the imperial and US customary systems of measurement. Since 1959, both units have been defined by international agreement as equivalent to 0.3048 meters exactly. In both systems, the foot comprises 12 inches and three feet compose a yard.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
foot | ft | ≡ 0.3048 m ≡ 1⁄3 yd ≡ 12 inches | ≡ 0.3048 m | Imperial/US |
feet | light-hours | feet | light-hours |
---|---|---|---|
1 | ≡ 2.824176006011E-13 | 4 | ≡ 1.1296704024044E-12 |
1.5 | ≡ 4.2362640090165E-13 | 4.5 | ≡ 1.270879202705E-12 |
2 | ≡ 5.648352012022E-13 | 5 | ≡ 1.4120880030055E-12 |
2.5 | ≡ 7.0604400150276E-13 | 5.5 | ≡ 1.5532968033061E-12 |
3 | ≡ 8.4725280180331E-13 | 6 | ≡ 1.6945056036066E-12 |
light-hours | feet |
---|---|
1 | ≡ 3,540,855,803,149.6 |
2.824176006011 × 10-13 | ≡ 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 …) |