I am afraid Ma Be in USMA 19387 completely misunderstood what I wrote in USMA 19374.
> Joseph B. Reid wrote: >... >>Appendix 1 of the metric bible states that the CPGM of 1975 redommended a >>value for the speed of light. The second is the most accurately defined >>unit that we have. It is axiomatic that >> c = speed of light = lamda X frequency. >>The frequency of a laser can be determined, and by the equation, so can its >>wavelength. This gives a standard of length that is more accurate than the >>previous metal bars. It could be stated that it as based on the wavelength >>of a radiation of a specified frequency, or as the path travelled by light >>in a specified time interval. The CPGM decided in favor of the latter form >>of the statement. >>... >Very good, Joe. Thanks. Which goes to show that one CAN define the metre >without resorting to the "crutch" of the second after all. Again, it goes >to show how much we may still have to do and work in terms of the >*conceptual* aspect of defining a system of units. > >Marcus > > >Is your boss reading your email? ....Probably >Keep your messages private by using Lycos Mail. >Sign up today at http://mail.lycos.com Joseph B.Reid 17 Glebe Road West Toronto M5P 1C8 Tel. 416 486-6071
