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NIST Unveils Chip-Scale Atomic Clock
From: David Farber <dave () farber net>
Date: Sat, 04 Sep 2004 06:00:20 -0400
Begin forwarded message: From: Bob Rosenberg <bob () bobrosenberg phoenix az us> Date: September 4, 2004 3:50:49 AM EDT To: dave () farber net Subject: NIST Unveils Chip-Scale Atomic Clock Dave I haven't seen this discussed on IP yet. If it was, I missed it. -- Bob Rosenberg, Principal R.G. Rosenberg & Assoc. Public Policy Consulting & Advocacy P.O. Box 33023 Phoenix, AZ 85067-3023 LandLine: 602-274-3012 Mobile: 602-206-2856 bob () bobrosenberg phoenix az us "A free society is one where it is safe to be unpopular." --Adlai Stevenson **************************************** NIST Unveils Chip-Scale Atomic Clock http://www.nist.gov/public_affairs/releases/miniclock.htm FOR IMMEDIATE RELEASE: Aug. 27, 2004 Laura Ost (301) 975-3776 The heart of a minuscule atomic clock—believed to be 100 times smaller than any other atomic clock—has been demonstrated by scientists at the Commerce Department’s National Institute of Standards and Technology (NIST), opening the door to atomically precise timekeeping in portable, battery-powered devices for secure wireless communications, more precise navigation and other applications. Described in the Aug. 30, 2004, issue of Applied Physics Letters, the clock’s inner workings are about the size of a grain of rice (1.5 millimeters on a side and 4 millimeters high), consume less than 75 thousandths of a watt (enabling the clock to be operated on batteries) and are stable to one part in 10 billion, equivalent to gaining or losing just one second every 300 years. ------------------------------------- You are subscribed as interesting-people () lists elistx com To manage your subscription, go to http://v2.listbox.com/member/?listname=ip Archives at: http://www.interesting-people.org/archives/interesting-people/
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- NIST Unveils Chip-Scale Atomic Clock David Farber (Sep 04)