/
Article

New coordination between universal and atomic time

MAY 01, 1971
Physics Today

Coordinated Universal Time (UTC), the time scale based on the Earth’s rotation, will be changed on 1 January next year to ensure that the difference between UTC and International Atomic Time (IAT) will always be a whole number of seconds. The plans, approved by the International Radio Consultative Committee at its February meeting in Geneva, should simplify life for physicists who use precise frequency generators or other precise timing devices.

This article is only available in PDF format

Related content
/
Article
Nilanjan P. Choudhury left physics for a corporate software job, then returned to it for playwriting.
/
Article
His 1988 sketch of how to use Antarctic ice to detect neutrinos led to the IceCube observatory, which made the first detections of high-energy neutrinos in 2013.
/
Article
After an injury forced him to pivot away from football, Tyler had a chance encounter that ignited his curiosity about exoplanets.
/
Article
The former fighter pilot wants the designers of autonomous systems to heed the hard lessons from aviation.
This Content Appeared In
pt-cover_1971_05.jpeg

Volume 24, Number 5

Get PT newsletters in your inbox

pt_newsletter_card_blue.png
PT The Week in Physics

A collection of PT's content from the previous week delivered every Monday.

pt_newsletter_card_darkblue.png
PT New Issue Alert

Be notified about the new issue with links to highlights and the full TOC.

pt_newsletter_card_pink.png
PT Webinars & White Papers

The latest webinars, white papers and other informational resources.

By signing up you agree to allow AIP to send you email newsletters. You further agree to our privacy policy and terms of service.