Radio standards
作者:
L.Hartshorn,
L.Essen,
期刊:
Proceedings of the IEE - Part III: Radio and Communication Engineering
(IET Available online 1949)
卷期:
Volume 96,
issue 39
页码: 37-39
年代: 1949
DOI:10.1049/pi-3.1949.0008
出版商: IEE
数据来源: IET
摘要:
The meaning of the term “standard” in the field of electrical measurement is considered, and distinctions are drawn between definitive, derived, transfer and working standards. The recent change of units gives a reduction of the number of definitive standards. The various standards employed for radio frequency work afford good examples of the general ideas. The status and accuracy of the standards of capacitance, inductance and frequency are briefly reviewed.
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