From: utzoo!mark Newsgroups: net.misc Title: Re: A Relavtistically Simple Question Article-I.D.: utzoo.2769 Posted: Fri Jan 21 00:17:58 1983 Received: Fri Jan 21 00:17:58 1983 References: psuvax.1153 net.physics hasn't gone away here, at least. i suspect the original posting simply got lost, which seems a common enough occurance. the question was: can i make a digital clock, which simply counts waves in the power line, lose an hour by whirling it over my head very fast? what happens to the extra line pulses? this much-abused instrument is not in fact a clock; it is just a display. the clock is whatever is keeping the line frequency at a nice even 60 hertz. if you put a self-contained clock on the other "clock" while spinning it, the new clock would lose an hour. there are actually things in the display which are local-time-dependent, ie the electronics of it. while it is being whirled, it is slowed, so the line frequency looks very high to it. but the actual number of cycles is, of course, not changed by this. mARK bLOORE univ. of toronto