| 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 |
| earth radius | 169,400.8552504 R⊕ | 338,801.7105007 R⊕ | 508,202.5657511 R⊕ | 677,603.4210014 R⊕ | 847,004.2762518 R⊕ | 1,016,405.1315021 R⊕ | 1,185,805.9867525 R⊕ | 1,355,206.8420028 R⊕ | 1,524,607.6972532 R⊕ | 1,694,008.5525035 R⊕ | 1,863,409.4077539 R⊕ | 2,032,810.2630042 R⊕ | 2,202,211.1182546 R⊕ | 2,371,611.9735049 R⊕ | 2,541,012.8287553 R⊕ | 2,710,413.6840057 R⊕ | 2,879,814.539256 R⊕ | 3,049,215.3945064 R⊕ | 3,218,616.2497567 R⊕ | 3,388,017.1050071 R⊕ | 3,557,417.9602574 R⊕ | 3,726,818.8155078 R⊕ | 3,896,219.6707581 R⊕ | 4,065,620.5260085 R⊕ | 4,235,021.3812588 R⊕ | 4,404,422.2365092 R⊕ | 4,573,823.0917595 R⊕ | 4,743,223.9470099 R⊕ | 4,912,624.8022602 R⊕ | 5,082,025.6575106 R⊕ | 5,251,426.5127609 R⊕ | 5,420,827.3680113 R⊕ | 5,590,228.2232617 R⊕ | 5,759,629.078512 R⊕ | 5,929,029.9337624 R⊕ | 6,098,430.7890127 R⊕ | 6,267,831.6442631 R⊕ | 6,437,232.4995134 R⊕ | 6,606,633.3547638 R⊕ | 6,776,034.2100141 R⊕ | 6,945,435.0652645 R⊕ | 7,114,835.9205148 R⊕ | 7,284,236.7757652 R⊕ | 7,453,637.6310155 R⊕ | 7,623,038.4862659 R⊕ | 7,792,439.3415162 R⊕ | 7,961,840.1967666 R⊕ | 8,131,241.052017 R⊕ | 8,300,641.9072673 R⊕ | 8,470,042.7625177 R⊕ | 8,639,443.617768 R⊕ | 8,808,844.4730184 R⊕ | 8,978,245.3282687 R⊕ | 9,147,646.1835191 R⊕ | 9,317,047.0387694 R⊕ | 9,486,447.8940198 R⊕ | 9,655,848.7492701 R⊕ | 9,825,249.6045205 R⊕ | 9,994,650.4597708 R⊕ | 10,164,051.315021 R⊕ | 10,333,452.170272 R⊕ | 10,502,853.025522 R⊕ | 10,672,253.880772 R⊕ | 10,841,654.736023 R⊕ | 11,011,055.591273 R⊕ | 11,180,456.446523 R⊕ | 11,349,857.301774 R⊕ | 11,519,258.157024 R⊕ | 11,688,659.012274 R⊕ | 11,858,059.867525 R⊕ | 12,027,460.722775 R⊕ | 12,196,861.578025 R⊕ | 12,366,262.433276 R⊕ | 12,535,663.288526 R⊕ | 12,705,064.143776 R⊕ | 12,874,464.999027 R⊕ | 13,043,865.854277 R⊕ | 13,213,266.709528 R⊕ | 13,382,667.564778 R⊕ | 13,552,068.420028 R⊕ | 13,721,469.275279 R⊕ | 13,890,870.130529 R⊕ | 14,060,270.985779 R⊕ | 14,229,671.84103 R⊕ | 14,399,072.69628 R⊕ | 14,568,473.55153 R⊕ | 14,737,874.406781 R⊕ | 14,907,275.262031 R⊕ | 15,076,676.117281 R⊕ | 15,246,076.972532 R⊕ | 15,415,477.827782 R⊕ | 15,584,878.683032 R⊕ | 15,754,279.538283 R⊕ | 15,923,680.393533 R⊕ | 16,093,081.248784 R⊕ | 16,262,482.104034 R⊕ | 16,431,882.959284 R⊕ | 16,601,283.814535 R⊕ | 16,770,684.669785 R⊕ | 16,940,085.525035 R⊕ |
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 | earth radius | light-hours | earth radius |
|---|---|---|---|
| 1 | ≈ 169400.85525035 | 4 | ≈ 677603.42100141 |
| 1.5 | ≈ 254101.28287553 | 4.5 | ≈ 762303.84862659 |
| 2 | ≈ 338801.71050071 | 5 | ≈ 847004.27625177 |
| 2.5 | ≈ 423502.13812588 | 5.5 | ≈ 931704.70387694 |
| 3 | ≈ 508202.56575106 | 6 | ≈ 1016405.1315021 |
Earth radius is the distance from Earth's center to its surface, about 6,371 km (3,959 mi). This length is also used as a unit of distance, especially in astronomy and geology, where it is usually denoted by R⊕.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| earth radius | R⊕ | ≈ 6,371 km | ≈ 6,371 km | Science - Astronomy (Length) |
| earth radius | light-hours | earth radius | light-hours |
|---|---|---|---|
| 1 | ≈ 5.9031579180762E-6 | 4 | ≈ 2.3612631672305E-5 |
| 1.5 | ≈ 8.8547368771143E-6 | 4.5 | ≈ 2.6564210631343E-5 |
| 2 | ≈ 1.1806315836152E-5 | 5 | ≈ 2.9515789590381E-5 |
| 2.5 | ≈ 1.475789479519E-5 | 5.5 | ≈ 3.2467368549419E-5 |
| 3 | ≈ 1.7709473754229E-5 | 6 | ≈ 3.5418947508457E-5 |
| light-hours | earth radius |
|---|---|
| 1 | ≈ 169,400.8552504 |
| 5.9031579180762 × 10-6 | ≈ 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 …) |