Featured Research

from universities, journals, and other organizations

Office Of Naval Research To Unveil The 'Matchbox' Atomic Clock -- Loses Only One Second Every 10,000 Years

Date:
September 3, 2003
Source:
Office Of Naval Research
Summary:
In October 2003 the Office of Naval Research will unveil the performance of the next-generation, super-accurate clock no bigger than a matchbox. The Ultra-miniature Rubidium (Rb) Atomic Clock, 40 cubic centimeters in volume and using a minuscule one watt of power, doesn't weigh much more than a matchbox either. And… it will lose only about one second every 10,000 years.

How accurate is your kitchen clock? Probably good enough to get you to work on time, but perhaps not good enough for extremely precise ship and aircraft navigation, ground to outer space communications, or missile guidance.

In October 2003 the Office of Naval Research will unveil the performance of the next-generation, super-accurate clock no bigger than a matchbox. The Ultra-miniature Rubidium (Rb) Atomic Clock, 40 cubic centimeters in volume and using a minuscule one watt of power, doesn't weigh much more than a matchbox either. And… it will lose only about one second every 10,000 years.

Dr. John Kim, who oversees navigation and timekeeping technology programs at ONR, points out that while commercial atomic clocks already are available, they're relatively large and bulky. A typical Cesium beam atomic clock measures about 4,800 cubic centimeters in volume (about the size of a large backpack) and consumes up to 50 watts of power.

Kernco, Inc., of Danvers, MA, is a longtime builder of precision timing devices. In October, Kernco will deliver a field-tested unit of the Ultra-miniature Rb Atomic Clock to ONR that, Kim points out, is about half the size of the current commercially available ones, but improves on power needs by a factor of four. The tiny size of the Kernco clock, he says, will permit new degrees of design flexibility for systems, especially aircraft, which place a high premium on size and weight.

ONR awarded Kernco a contract in Nov. 2000 for development of the 40 cc clock. The company is a long time builder of precision timing devices.

The Kernco laser-based Ultra-miniature Rubidium Atomic Clock that is entirely optical in nature, a key breakthrough for miniaturizing atomic clocks. The laser light source is derived from a revolutionary technology breakthrough called Vertical Cavity Surface Emitting Laser (VCSEL), developed to meet the needs of fiber-optic communications industry for extremely compact lasers.

The difference between this new clock and other atomic clocks are the size, the weight, the power consumption, the transportability, and the price. The Kernco clock is a tactical grade atomic clock.

Kernco has already begun work for ONR on an even smaller 10 cc Rubidium Atomic Clock, but even that will not be the last word: other agencies are researching the development of the still-more accurate atomic clock.


Story Source:

The above story is based on materials provided by Office Of Naval Research. Note: Materials may be edited for content and length.


Cite This Page:

Office Of Naval Research. "Office Of Naval Research To Unveil The 'Matchbox' Atomic Clock -- Loses Only One Second Every 10,000 Years." ScienceDaily. ScienceDaily, 3 September 2003. <www.sciencedaily.com/releases/2003/09/030903074424.htm>.
Office Of Naval Research. (2003, September 3). Office Of Naval Research To Unveil The 'Matchbox' Atomic Clock -- Loses Only One Second Every 10,000 Years. ScienceDaily. Retrieved April 17, 2014 from www.sciencedaily.com/releases/2003/09/030903074424.htm
Office Of Naval Research. "Office Of Naval Research To Unveil The 'Matchbox' Atomic Clock -- Loses Only One Second Every 10,000 Years." ScienceDaily. www.sciencedaily.com/releases/2003/09/030903074424.htm (accessed April 17, 2014).

Share This



More Matter & Energy News

Thursday, April 17, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

German Researchers Crack Samsung's Fingerprint Scanner

German Researchers Crack Samsung's Fingerprint Scanner

Newsy (Apr. 16, 2014) German researchers have used a fake fingerprint made from glue to bypass the fingerprint security system on Samsung's new Galaxy S5 smartphone. Video provided by Newsy
Powered by NewsLook.com
Porsche CEO Says Supercar Is Not Dead: Cue the Spyder 918

Porsche CEO Says Supercar Is Not Dead: Cue the Spyder 918

TheStreet (Apr. 16, 2014) The Porsche Spyder 918 proves that, in an automotive world obsessed with fuel efficiency, the supercar is not dead. Porsche North America CEO Detlev von Platen attributes the brand's consistent sales growth -- 21% in 2013 -- with an investment in new technology and expanded performance dynamics. The hybrid Spyder 918 has 887 horsepower and 944 lb-ft of torque, but it can run 18 miles on just an electric charge. The $845,000 vehicle is not a consumer-targeted vehicle but a brand statement. Video provided by TheStreet
Powered by NewsLook.com
Industry's Optimism Shines At New York Auto Show

Industry's Optimism Shines At New York Auto Show

Newsy (Apr. 16, 2014) After seeing auto sales grow last month, there's plenty for the industry to celebrate as it rolls out its newest designs. Video provided by Newsy
Powered by NewsLook.com
Ford Mustang Fetes Its 50th Atop Empire State Building

Ford Mustang Fetes Its 50th Atop Empire State Building

AFP (Apr. 16, 2014) Ford celebrated the 50th birthday of its beloved Mustang by displaying a new model of the convertible on top of the Empire State Building in New York. Duration: 00:28 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins