light-second | 1 light-second | 2 light-second | 3 light-second | 4 light-second | 5 light-second | 6 light-second | 7 light-second | 8 light-second | 9 light-second | 10 light-second | 11 light-second | 12 light-second | 13 light-second | 14 light-second | 15 light-second | 16 light-second | 17 light-second | 18 light-second | 19 light-second | 20 light-second | 21 light-second | 22 light-second | 23 light-second | 24 light-second | 25 light-second | 26 light-second | 27 light-second | 28 light-second | 29 light-second | 30 light-second | 31 light-second | 32 light-second | 33 light-second | 34 light-second | 35 light-second | 36 light-second | 37 light-second | 38 light-second | 39 light-second | 40 light-second | 41 light-second | 42 light-second | 43 light-second | 44 light-second | 45 light-second | 46 light-second | 47 light-second | 48 light-second | 49 light-second | 50 light-second | 51 light-second | 52 light-second | 53 light-second | 54 light-second | 55 light-second | 56 light-second | 57 light-second | 58 light-second | 59 light-second | 60 light-second | 61 light-second | 62 light-second | 63 light-second | 64 light-second | 65 light-second | 66 light-second | 67 light-second | 68 light-second | 69 light-second | 70 light-second | 71 light-second | 72 light-second | 73 light-second | 74 light-second | 75 light-second | 76 light-second | 77 light-second | 78 light-second | 79 light-second | 80 light-second | 81 light-second | 82 light-second | 83 light-second | 84 light-second | 85 light-second | 86 light-second | 87 light-second | 88 light-second | 89 light-second | 90 light-second | 91 light-second | 92 light-second | 93 light-second | 94 light-second | 95 light-second | 96 light-second | 97 light-second | 98 light-second | 99 light-second | 100 light-second |
foot, metric | 948,026,992.61089 mf | 1,896,053,985.2218 mf | 2,844,080,977.8327 mf | 3,792,107,970.4435 mf | 4,740,134,963.0544 mf | 5,688,161,955.6653 mf | 6,636,188,948.2762 mf | 7,584,215,940.8871 mf | 8,532,242,933.498 mf | 9,480,269,926.1089 mf | 10,428,296,918.72 mf | 11,376,323,911.331 mf | 12,324,350,903.942 mf | 13,272,377,896.552 mf | 14,220,404,889.163 mf | 15,168,431,881.774 mf | 16,116,458,874.385 mf | 17,064,485,866.996 mf | 18,012,512,859.607 mf | 18,960,539,852.218 mf | 19,908,566,844.829 mf | 20,856,593,837.44 mf | 21,804,620,830.05 mf | 22,752,647,822.661 mf | 23,700,674,815.272 mf | 24,648,701,807.883 mf | 25,596,728,800.494 mf | 26,544,755,793.105 mf | 27,492,782,785.716 mf | 28,440,809,778.327 mf | 29,388,836,770.938 mf | 30,336,863,763.548 mf | 31,284,890,756.159 mf | 32,232,917,748.77 mf | 33,180,944,741.381 mf | 34,128,971,733.992 mf | 35,076,998,726.603 mf | 36,025,025,719.214 mf | 36,973,052,711.825 mf | 37,921,079,704.435 mf | 38,869,106,697.046 mf | 39,817,133,689.657 mf | 40,765,160,682.268 mf | 41,713,187,674.879 mf | 42,661,214,667.49 mf | 43,609,241,660.101 mf | 44,557,268,652.712 mf | 45,505,295,645.323 mf | 46,453,322,637.933 mf | 47,401,349,630.544 mf | 48,349,376,623.155 mf | 49,297,403,615.766 mf | 50,245,430,608.377 mf | 51,193,457,600.988 mf | 52,141,484,593.599 mf | 53,089,511,586.21 mf | 54,037,538,578.821 mf | 54,985,565,571.431 mf | 55,933,592,564.042 mf | 56,881,619,556.653 mf | 57,829,646,549.264 mf | 58,777,673,541.875 mf | 59,725,700,534.486 mf | 60,673,727,527.097 mf | 61,621,754,519.708 mf | 62,569,781,512.319 mf | 63,517,808,504.929 mf | 64,465,835,497.54 mf | 65,413,862,490.151 mf | 66,361,889,482.762 mf | 67,309,916,475.373 mf | 68,257,943,467.984 mf | 69,205,970,460.595 mf | 70,153,997,453.206 mf | 71,102,024,445.817 mf | 72,050,051,438.427 mf | 72,998,078,431.038 mf | 73,946,105,423.649 mf | 74,894,132,416.26 mf | 75,842,159,408.871 mf | 76,790,186,401.482 mf | 77,738,213,394.093 mf | 78,686,240,386.704 mf | 79,634,267,379.315 mf | 80,582,294,371.925 mf | 81,530,321,364.536 mf | 82,478,348,357.147 mf | 83,426,375,349.758 mf | 84,374,402,342.369 mf | 85,322,429,334.98 mf | 86,270,456,327.591 mf | 87,218,483,320.202 mf | 88,166,510,312.813 mf | 89,114,537,305.423 mf | 90,062,564,298.034 mf | 91,010,591,290.645 mf | 91,958,618,283.256 mf | 92,906,645,275.867 mf | 93,854,672,268.478 mf | 94,802,699,261.089 mf |
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 | feet, metric | light-seconds | feet, metric |
---|---|---|---|
1 | ≈ 948026992.61089 | 4 | ≈ 3792107970.4435 |
1.5 | ≈ 1422040488.9163 | 4.5 | ≈ 4266121466.749 |
2 | ≈ 1896053985.2218 | 5 | ≈ 4740134963.0544 |
2.5 | ≈ 2370067481.5272 | 5.5 | ≈ 5214148459.3599 |
3 | ≈ 2844080977.8327 | 6 | ≈ 5688161955.6653 |
A metric foot is a nickname for a preferred number length of 3 basic modules (3 M), or 30 centimetres (11.811 in). The 30 cm metric ruler was a similar length to the traditional imperial one-foot ruler. A metric foot is 4.8 millimetres (0.189 in) shorter than an imperial foot.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
foot, metric | mf | ≡ √ 1⁄10 m | ≈ 0.31622776602 m | Metric system Non-SI |
feet, metric | light-seconds | feet, metric | light-seconds |
---|---|---|---|
1 | ≈ 1.0548222864899E-9 | 4 | ≈ 4.2192891459598E-9 |
1.5 | ≈ 1.5822334297349E-9 | 4.5 | ≈ 4.7467002892047E-9 |
2 | ≈ 2.1096445729799E-9 | 5 | ≈ 5.2741114324497E-9 |
2.5 | ≈ 2.6370557162249E-9 | 5.5 | ≈ 5.8015225756947E-9 |
3 | ≈ 3.1644668594698E-9 | 6 | ≈ 6.3289337189397E-9 |
light-seconds | feet, metric |
---|---|
1 | ≈ 948,026,992.61089 |
1.0548222864899 × 10-9 | ≈ 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 …) |