DocumentCode
1194717
Title
Recent Progress of the 2e/h Measurement at PTB
Author
Kose, Volkmar ; Melchert, Friedmund ; Fack, Heinrich ; Hetzel, Walter
Volume
21
Issue
4
fYear
1972
Firstpage
314
Lastpage
315
Abstract
In this paper, an experimental setup is described with which the stability of the PTB voltage standard, consisting of a group of International Weston cells, can be monitored with a total uncertainty (1¿) of 4 parts in 108 by means of the ac Josephson effect. The measured quotient of the fundamental constants 2e/h is given by 2e/h = (483 593.606 ± 0.020) GHZ/VPTB, May 1972.
Keywords
Circuits; Current measurement; Frequency conversion; Josephson effect; Milling machines; Network address translation; Physics; Resistors; Time measurement; Voltage;
fLanguage
English
Journal_Title
Instrumentation and Measurement, IEEE Transactions on
Publisher
ieee
ISSN
0018-9456
Type
jour
DOI
10.1109/TIM.1972.4314033
Filename
4314033
Link To Document