<[email protected]> wrote:
> It says nowadays there is no compelling > >technical reason to unify the power system at one frequency. > > ...except that clocks which work for one part of country won't work in the > rest. > They haven't made electric clocks like that for 30 years! They all have quartz crystal timers in them. I have a 20-year-old bedroom clock with a battery backup for the timer. Automobile clocks used to run off the battery directly. Before quartz timers came along they were notoriously unreliable. They would be off by a hour or more after a few months. I guess back the 1970s they must have had different electric clocks for east and west Japan. I never noticed. Then and now, I seldom knew what time it is. I used a wind-up pocket watch which I often forgot to wind. I now use a battery-powered pocket watch, since I do not like to be reminded of how quickly time passes. - Jed
