[time-nuts] Is this off topic?
Hal Murray
hmurray at megapathdsl.net
Sat Sep 22 00:02:48 EDT 2007
> Subject: [time-nuts] Is this off topic?
Seems fine to me. Thanks for the neat trip report.
> Does anyone care about how we got to where we are?
Yes. My geekiness is not constrained to electronics.
> Hill, in MN, needed a time standard for his railroad, so trains could
> be scheduled on a track without running into each other. Telegraphy
> made it possible.
I assume they used the telegraph to synchronize local clocks. How well did
that work? What sort of tricks/techniques did they use?
The wiki page says 30 seconds a week for railroad pocket watches.
How long could the local clocks coast if the telegraph was out? Does anybody
know anything about the overall error budget?
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