[DWJ] Tropes

Roger Burton West roger at firedrake.org
Fri Dec 8 05:45:03 EST 2006


On Thu, Dec 07, 2006 at 10:19:10PM +0000, Minnow wrote:

>One of my friends has "The speed of light is 1,802,617,500,000 furlongs per
>fortnight" as a .sig, and I never had the heart to try to find out whether
>he's right or not.

Given 299792458 metres/second, which these days is the definition, and:
0.0254 metres/inch
63360/8 inches/furlong
1209600 seconds/fortnight

we have:

299792458 * 8   * 10000 * 1209600
---------------------------------
          63360 * 254

or

1,802,617,499,785 and 355/1,397 furlongs/fortnight precisely.

R



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