Monitored Alarm Systems

Not all watches are created equal. Some watches lose a few seconds each month. Others are connected to cell towers and are constantly updating their views of time. We have come a long way since the VCR flashes 12:00. These are just a few articles about how we keep track of every minute.

• atomic clocks in the Woods "last second" when the clock begins to run nuclear power. Instead of using the excited electrons of a specific element to measure the passage of time, scientists zap the nuclei of atoms of thorium to create a watch that indicates the stems for about 1 second in 200 million years. [Url] NIST has a great site on the history of maintenance time. NIST also transmits signals from shortwave and provides a hotline to provide time to within milliseconds. [Url]
• [Warning: PDF link] In January 2012, could be a redefined version of Coordinated Universal Time, which eliminates the need to maintain our system of time-synchronized with the rotation of the Earth - and abandonment of the "leap second" among other artifacts. Equipment ". Connection
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More interesting science-related material, check what is currently floating around the universe of StumbleUpon. [url]

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