on 3/5/02 8:24 PM, James R. Frysinger at [EMAIL PROTECTED] wrote: > Who among us is so schedule driven to > worry about 0.9 s?
It has nothing to do with daily schedules, but, if you want to know who needs to be concerned with a 0.9 s error in measuring the time of day, there are some "among us" who do. Those who guide Space shuttle to rendevous with orbiting Hubble telescopes do. Those who use GPS systems to locate ourselves or others depend on the manufacturers and programmers to know it that precisely so that the information we get will be correct. Then there are many others who need to know other times measurements (other than "time of day") to that accuracy. And, even if we limit ourselves only to time of day measurements, it needs to be pointed out that when a 0.9 s of error acumulates in the time of day, if we do NOT correct for it, the error will continue to accumulate until there ARE big enough errors that even avergage, non-technical citizens might have to worry about it. The history of our calendar involves small errors that people did not think important enough to worry about for a long time, until the accumulated error added up to days and weeks. Regards Bill Hooper
