ARORA, POONAM and AWASTHI, AMRITA and BHARATH, VATTIKONDA and ACHARYA, AISHIK and YADAV, SUCHI and AGARWAL, ASHISH and GUPTA, AMITAVA SEN (2014) Atomic clocks: A brief history and current status of research in India. Pramana, 82 (2). pp. 173-183. ISSN 0304-4289

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Abstract

Frequency corresponding to the energy difference between designated levels of an atom provides precise reference for making a universally accurate clock. Since the middle of the 20th century till now, there have been tremendous efforts in the field of atomic clocks making time the most accurately measured physical quantity. National Physical Laboratory India (NPLI) is the nation's timekeeper and is developing an atomic fountain clock which will be a primary frequency standard. The fountain is currently operational and is at the stage of complete frequency evaluation. In this paper, a brief review on atomic time along with some of the recent results from the fountain clock will be discussed.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/S Indian Academy of Sciences.
Subjects:	Physics
Divisions:	UNSPECIFIED
Depositing User:	Dr. Rajpal Walke
Date Deposited:	11 Sep 2015 11:11
Last Modified:	11 Sep 2015 11:11
URI:	http://npl.csircentral.net/id/eprint/1178

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