NIST Unveils Chip-Scale Atomic Clock

[David Farber <dave () farber net>]

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
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Mobile:  602-206-2856
bob () bobrosenberg phoenix az us


"A free society is one where it is safe to be unpopular."
    --Adlai Stevenson

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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.

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