speed of light | 1 c | 2 c | 3 c | 4 c | 5 c | 6 c | 7 c | 8 c | 9 c | 10 c | 11 c | 12 c | 13 c | 14 c | 15 c | 16 c | 17 c | 18 c | 19 c | 20 c | 21 c | 22 c | 23 c | 24 c | 25 c | 26 c | 27 c | 28 c | 29 c | 30 c | 31 c | 32 c | 33 c | 34 c | 35 c | 36 c | 37 c | 38 c | 39 c | 40 c | 41 c | 42 c | 43 c | 44 c | 45 c | 46 c | 47 c | 48 c | 49 c | 50 c | 51 c | 52 c | 53 c | 54 c | 55 c | 56 c | 57 c | 58 c | 59 c | 60 c | 61 c | 62 c | 63 c | 64 c | 65 c | 66 c | 67 c | 68 c | 69 c | 70 c | 71 c | 72 c | 73 c | 74 c | 75 c | 76 c | 77 c | 78 c | 79 c | 80 c | 81 c | 82 c | 83 c | 84 c | 85 c | 86 c | 87 c | 88 c | 89 c | 90 c | 91 c | 92 c | 93 c | 94 c | 95 c | 96 c | 97 c | 98 c | 99 c | 100 c |
yard per hour | 1,180,285,267,716.5 ydph | 2,360,570,535,433.1 ydph | 3,540,855,803,149.6 ydph | 4,721,141,070,866.1 ydph | 5,901,426,338,582.7 ydph | 7,081,711,606,299.2 ydph | 8,261,996,874,015.7 ydph | 9,442,282,141,732.3 ydph | 10 622 567 409 449 ydph | 11 802 852 677 165 ydph | 12 983 137 944 882 ydph | 14 163 423 212 598 ydph | 15 343 708 480 315 ydph | 16 523 993 748 031 ydph | 17 704 279 015 748 ydph | 18 884 564 283 465 ydph | 20 064 849 551 181 ydph | 21 245 134 818 898 ydph | 22 425 420 086 614 ydph | 23 605 705 354 331 ydph | 24 785 990 622 047 ydph | 25 966 275 889 764 ydph | 27 146 561 157 480 ydph | 28 326 846 425 197 ydph | 29 507 131 692 913 ydph | 30 687 416 960 630 ydph | 31 867 702 228 346 ydph | 33 047 987 496 063 ydph | 34 228 272 763 780 ydph | 35 408 558 031 496 ydph | 36 588 843 299 213 ydph | 37 769 128 566 929 ydph | 38 949 413 834 646 ydph | 40 129 699 102 362 ydph | 41 309 984 370 079 ydph | 42 490 269 637 795 ydph | 43 670 554 905 512 ydph | 44 850 840 173 228 ydph | 46 031 125 440 945 ydph | 47 211 410 708 661 ydph | 48 391 695 976 378 ydph | 49 571 981 244 094 ydph | 50 752 266 511 811 ydph | 51 932 551 779 528 ydph | 53 112 837 047 244 ydph | 54 293 122 314 961 ydph | 55 473 407 582 677 ydph | 56 653 692 850 394 ydph | 57 833 978 118 110 ydph | 59 014 263 385 827 ydph | 60 194 548 653 543 ydph | 61 374 833 921 260 ydph | 62 555 119 188 976 ydph | 63 735 404 456 693 ydph | 64 915 689 724 409 ydph | 66 095 974 992 126 ydph | 67 276 260 259 843 ydph | 68 456 545 527 559 ydph | 69 636 830 795 276 ydph | 70 817 116 062 992 ydph | 71 997 401 330 709 ydph | 73 177 686 598 425 ydph | 74 357 971 866 142 ydph | 75 538 257 133 858 ydph | 76 718 542 401 575 ydph | 77 898 827 669 291 ydph | 79 079 112 937 008 ydph | 80 259 398 204 724 ydph | 81 439 683 472 441 ydph | 82 619 968 740 157 ydph | 83 800 254 007 874 ydph | 84 980 539 275 591 ydph | 86 160 824 543 307 ydph | 87 341 109 811 024 ydph | 88 521 395 078 740 ydph | 89 701 680 346 457 ydph | 90 881 965 614 173 ydph | 92 062 250 881 890 ydph | 93 242 536 149 606 ydph | 94 422 821 417 323 ydph | 95 603 106 685 039 ydph | 96 783 391 952 756 ydph | 97 963 677 220 472 ydph | 99 143 962 488 189 ydph | 1.0032424775591 × 1014 ydph | 1.0150453302362 × 1014 ydph | 1.0268481829134 × 1014 ydph | 1.0386510355906 × 1014 ydph | 1.0504538882677 × 1014 ydph | 1.0622567409449 × 1014 ydph | 1.074059593622 × 1014 ydph | 1.0858624462992 × 1014 ydph | 1.0976652989764 × 1014 ydph | 1.1094681516535 × 1014 ydph | 1.1212710043307 × 1014 ydph | 1.1330738570079 × 1014 ydph | 1.144876709685 × 1014 ydph | 1.1566795623622 × 1014 ydph | 1.1684824150394 × 1014 ydph | 1.1802852677165 × 1014 ydph |
The speed of light in vacuum, commonly denoted c, is a universal physical constant important in many areas of physics. Its exact value is 299,792,458 metres per second (approximately 3.00×108 m/s, or 186,282 mi/s); it is exact because the unit of length, the metre, is defined from this constant and the international standard for time.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
speed of light | c | ≡ 299792458 m/s | = 299792458 m/s | Other Speed |
speed of lights | yards per hour | speed of lights | yards per hour |
---|---|---|---|
1 | = 1180285267716.5 | 6 | = 7081711606299.2 |
2 | = 2360570535433.1 | 7 | = 8261996874015.7 |
3 | = 3540855803149.6 | 8 | = 9442282141732.3 |
4 | = 4721141070866.1 | 9 | = 10622567409449 |
5 | = 5901426338582.7 | 10 | = 11802852677165 |
Yards per hour (abbreviated mph, YDPH or yd/h) is an imperial and United States customary unit of speed expressing the number of statute yards covered in one hour.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
yard per hour | ydph | ≡ 1 yd/h | = 0.000254 m/s | Imperial/US |
yards per hour | speed of lights | yards per hour | speed of lights |
---|---|---|---|
1 | = 8.4725280180331E-13 | 6 | = 5.0835168108198E-12 |
2 | = 1.6945056036066E-12 | 7 | = 5.9307696126231E-12 |
3 | = 2.5417584054099E-12 | 8 | = 6.7780224144264E-12 |
4 | = 3.3890112072132E-12 | 9 | = 7.6252752162298E-12 |
5 | = 4.2362640090165E-12 | 10 | = 8.4725280180331E-12 |
speed of lights | yards per hour |
---|---|
1 | = 1,180,285,267,716.5 |
8.4725280180331 × 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 …) |