| 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 |
| light-second | 3 600 light-second | 7 200 light-second | 10 800 light-second | 14 400 light-second | 18 000 light-second | 21 600 light-second | 25 200 light-second | 28 800 light-second | 32 400 light-second | 36 000 light-second | 39 600 light-second | 43 200 light-second | 46 800 light-second | 50 400 light-second | 54 000 light-second | 57 600 light-second | 61 200 light-second | 64 800 light-second | 68 400 light-second | 72 000 light-second | 75 600 light-second | 79 200 light-second | 82 800 light-second | 86 400 light-second | 90 000 light-second | 93 600 light-second | 97 200 light-second | 100 800 light-second | 104 400 light-second | 108 000 light-second | 111 600 light-second | 115 200 light-second | 118 800 light-second | 122 400 light-second | 126 000 light-second | 129 600 light-second | 133 200 light-second | 136 800 light-second | 140 400 light-second | 144 000 light-second | 147 600 light-second | 151 200 light-second | 154 800 light-second | 158 400 light-second | 162 000 light-second | 165 600 light-second | 169 200 light-second | 172 800 light-second | 176 400 light-second | 180 000 light-second | 183 600 light-second | 187 200 light-second | 190 800 light-second | 194 400 light-second | 198 000 light-second | 201 600 light-second | 205 200 light-second | 208 800 light-second | 212 400 light-second | 216 000 light-second | 219 600 light-second | 223 200 light-second | 226 800 light-second | 230 400 light-second | 234 000 light-second | 237 600 light-second | 241 200 light-second | 244 800 light-second | 248 400 light-second | 252 000 light-second | 255 600 light-second | 259 200 light-second | 262 800 light-second | 266 400 light-second | 270 000 light-second | 273 600 light-second | 277 200 light-second | 280 800 light-second | 284 400 light-second | 288 000 light-second | 291 600 light-second | 295 200 light-second | 298 800 light-second | 302 400 light-second | 306 000 light-second | 309 600 light-second | 313 200 light-second | 316 800 light-second | 320 400 light-second | 324 000 light-second | 327 600 light-second | 331 200 light-second | 334 800 light-second | 338 400 light-second | 342 000 light-second | 345 600 light-second | 349 200 light-second | 352 800 light-second | 356 400 light-second | 360 000 light-second |
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 | light-seconds | light-hours | light-seconds |
|---|---|---|---|
| 1 | ≡ 3600 | 4 | ≡ 14400 |
| 1.5 | ≡ 5400 | 4.5 | ≡ 16200 |
| 2 | ≡ 7200 | 5 | ≡ 18000 |
| 2.5 | ≡ 9000 | 5.5 | ≡ 19800 |
| 3 | ≡ 10800 | 6 | ≡ 21600 |
The light-second 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 onesecond, and is equal to exactly 299792458 metres (just over 186282 miles).
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| light-second | ≡ Distance light travels in one second in vacuum | ≡ 299 792 458 m | Science - Astronomy (Length) |
| light-seconds | light-hours | light-seconds | light-hours |
|---|---|---|---|
| 1 | ≡ 0.00027777777777778 | 4 | ≡ 0.0011111111111111 |
| 1.5 | ≡ 0.00041666666666667 | 4.5 | ≡ 0.00125 |
| 2 | ≡ 0.00055555555555556 | 5 | ≡ 0.0013888888888889 |
| 2.5 | ≡ 0.00069444444444444 | 5.5 | ≡ 0.0015277777777778 |
| 3 | ≡ 0.00083333333333333 | 6 | ≡ 0.0016666666666667 |
| light-hours | light-seconds |
|---|---|
| 1 | ≡ 3 600 |
| 0.0002778 | ≡ 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 …) |