DailyDirt: Calibration Time, Come On!
from the urls-we-dig-up dept
Not all clocks are created equal. Some clocks lose a few seconds every month. Others are connected to cell phone towers and are constantly updating their time displays. We've come a long way from the VCRs that blink 12:00. Here are just a few articles on how we're keeping track of every minute.- Atomic clocks will be sooo "last second" when nuclear clocks start ticking. Instead of using excited electrons from a specified element to measure the passage of time, scientists will zap the nuclei of thorium atoms to create a clock that claims to drift by about 1 second in 200 billion years. [url]
- NIST has an interesting website on the history of time keeping. NIST also broadcasts shortwave signals and offers a phone-based service to deliver the current time within an accuracy of a few milliseconds. [url]
- [Warning: pdf link] In January 2012, there could be a redefined version of Coordinated Universal Time that eliminates any requirement to keep our time systems synchronized to the Earth's rotation -- and ditching the "leap second" among other artifacts. Computer: "Captain's log, stardate 41153.7. Our destination is planet..." [url]
- To discover more interesting science-related stuff, check out what's currently floating around the StumbleUpon universe. [url]
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Filed Under: clocks, leap seconds, nuclear clock, stardate, time
Companies: nist
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Try here for a pdf:
http://arxiv.org/pdf/1106.3141v1
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Stardates
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This sort of thinking is rather short sighted and will probably make the pencil neck MBAs happy, it has definitely caused a stir in the scientific fields. For some, the immediate problem will be tracking divergent time systems, others will not have a problem at all for many years. Eventually, Christmas in the northern hemisphere will no longer occur in winter. Not sure how Santa feels about that. There are several suggestions about how this should be addressed - not sure if any make more sense than simply staying with the system presently in place.
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Nice but the best time keepers in our Universe are the pulsar stars that make great time keepers through their regular rapid rotations.
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Re: ... the best time keepers in our Universe are the pulsar stars that make great time keepers through their regular rapid rotations.
Guess how we measure that?
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It's complicated, but I still like noon being the exact time when the sun is highest in the sky.
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Leap Seconds
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