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WASHINGTON (AP) — A yearlong experiment with the nation's electric grid could mess up traffic lights, security systems and some computers — and make plug-in clocks and appliances like programmable coffeemakers run up to 20 minutes fast.
"A lot of people are going to have things break and they're not going to know why," said Demetrios Matsakis, head of the time service department at the U.S. Naval Observatory, one of two official timekeeping agencies in the federal government.
Since 1930, electric clocks have kept time based on the rate of the electrical current that powers them. If the current slips off its usual rate, clocks run a little fast or slow. Power companies now take steps to correct it and keep the frequency of the current — and the time — as precise as possible.
The group that oversees the U.S. power grid is proposing an experiment that would allow more frequency variation than it does now without corrections, according to a company presentation obtained by The Associated Press.
"Is anyone using the grid to keep track of time?" McClelland said. "Let's see if anyone complains if we eliminate it."
No one is quite sure what will be affected. This won't change the clocks in cellphones, GPS or even on computers, and it won't have anything to do with official U.S. time or Internet time.
But wall clocks and those on ovens and coffeemakers — anything that flashes "12:00" when it loses power — may be just a bit off every second, and that error can grow with time.
It's not easy figuring what will run fast and what won't. For example, VCRs or DVRs that get their time from cable systems or the Internet probably won't be affected, but those with clocks tied to the electric current will be off a bit, Matsakis said.
This will be an interesting experiment to see how dependent our timekeeping is on the power grid, Matsakis said.
This article asks more questions than it answers... How will allowing the frequency to change (by a very small amount... 20 minutes fast in a year is much less than one part in hundred thousand) provide a benefit? Why are the 3 regional grids at different maximum variances? Will the frequency under this regime ever be LESS than 60 Hz? This is a potentially disruptive thing to try so broadly as an "experiment". Is there any adult supervision?
Originally posted by ProphecyPhD
Imagine getting later and later for work and appointments as the months go by.
Since 1930, electric clocks have kept time based on the rate of the electrical current that powers them. If the current slips off its usual rate, clocks run a little fast or slow. Power companies now take steps to correct it and keep the frequency of the current — and the time — as precise as possible.
Originally posted by rykc27
reply to post by ProphecyPhD
Can you please explain how people will get "later and later for work"
if these electric clocks will be gaining time by twenty minutes a year.
Surely this will mean people will be getting earlier and earlier for work.
Originally posted by OptimusSubprime
The article you posted says that it could make clocks run 20 minutes fast. This means that you would be early to work... not late.
Originally posted by butcherguy
Nevermind.
Someone already took care of it.
edit on 28-6-2011 by butcherguy because: (no reason given)
Yes you did, so I edited my post.
Originally posted by ProphecyPhD
Originally posted by butcherguy
Nevermind.
Someone already took care of it.
edit on 28-6-2011 by butcherguy because: (no reason given)
I believe i said that