2ee946b266
Per [2] a furlong is 220 yards and a yard is exactly 0.9144 m. Per [3] a fortnight is 14 days. As I didn't find a good authority for what definition of a day a fortnight is measured in, I'll assume here a day is 86400 SI seconds. Thus, the speed of light in a vaccum is approximately 1.80*10^12 furlongs per fortnight. 1.80*10^12 = 299792458*86400*14/(220*0.9144) [1] Resolution 1 of the 17th meeting of the CGPM (1983) http://www.bipm.org/en/CGPM/db/17/1/ [2] Weights and Measures Act 1985 http://www.legislation.gov.uk/ukpga/1985/72 [3] The Concise Oxford Dictionary, 5th Edition, 1964, p. 480 |
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