Marko Rauhamaa <ma...@pacujo.net>: > Ian Kelly <ian.g.ke...@gmail.com>: >> Off-topic, c being a fundamental constant is actually in the latter >> category. Its *exact* value is 299792458 m/s. >> >> The length of the meter, on the other hand, is defined as the distance >> traveled by light in a vacuum in 1/299792458 seconds and is subject to >> the precision of measurements. > > Since both c and the second are exact magnitudes, so is the meter. > > The second [...] is quantitatively defined in terms of exactly > 9,192,631,770 periods of a certain frequency of radiation from the > caesium atom: a so-called atomic clock. > <URL: https://en.wikipedia.org/wiki/Second>
Which would became immediately apparent if you programmed in Scheme. One meter is equal to the wavelength of said magnitude times: 9192631770/299792458 ==> 656616555/21413747 (exact? 9192631770/299792458) ==> #t Marko -- https://mail.python.org/mailman/listinfo/python-list
