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*To*: ARSCLIST@xxxxxxxxxxxx*Subject*: Re: [ARSCLIST] Odd Speed*From*: Mike Richter <mrichter@xxxxxxx>*Date*: Fri, 5 Mar 2004 19:39:37 -0800*Comments*: To: Association for Recorded Sound Discussion List <ARSCLIST@loc.gov>*Comments*: cc: ARSCLIST@sun8.loc.gov*In-reply-to*: <01aa01c40321$d268bca0$3702a8c0@interlinks.net>*Message-id*: <5.2.0.9.2.20040305193710.00a99e20@mail.cpl.net>*References*: <5.2.1.1.2.20040304172915.0202bdd0@127.0.0.1> <5.2.0.9.2.20040305123515.00a9aa88@mail.cpl.net>*Reply-to*: Association for Recorded Sound Discussion List <ARSCLIST@xxxxxxx>

Hmm-m-m-m...kinda makes sense, but let me see. I'll do this in meters to make the math easier (besides, as a Canadian I have to!)...

Electicity travels at approximately 3*10^8 meters/sec (300,000,000). This means if the paths were different in length by 300 km (300, 000 or 3*10^5 m) there would be a difference of 1 millisecond. This puts the two waveforms out of perefect sync by one part in a thousand...or .36 of a degree (assuming the generators were in sync).

Will this have any effect on AC devices? ...stevenc

If your arithmetic were appropriate, it would have little effect - but you dropped a factor of 60. It's a millisecond out of a sixtieth of a second to find the shift in one cycle. (You're not running the mains at one Hertz are you? <G>) So the shift is about 20 degrees and that's most noticeable.

Mike -- mrichter@xxxxxxx http://www.mrichter.com/

**References**:**Re: [ARSCLIST] Odd Speed***From:*Richard L. Hess

**Re: [ARSCLIST] Odd Speed***From:*Mike Richter

**Re: [ARSCLIST] Odd Speed***From:*Steven C. Barr

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