United States Naval Observatory Time‐Service
作者:
J. F. Helweg,
期刊:
Eos, Transactions American Geophysical Union
(WILEY Available online 1931)
卷期:
Volume 12,
issue 1
页码: 13-21
ISSN:0002-8606
年代: 1931
DOI:10.1029/TR012i001p00013
数据来源: WILEY
摘要:
I am carrying coal to Cardiff when I address this assembly on the subject of the Time‐Service.Before discussing the Naval Observatory Time‐Service, a brief history of the Observatory may be of interest. An amateur astronomer, William Lambert, presented a memorial to Congress in 1809, recommending the establishment of a First Meridian in the United States at the permanent, seat of Government. Lambert had previously determined the longitude of Washington and submitted his calculations with his memor
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