Excerpt from The Temperature Formula of Weston Standard Cell
The more recent work on the standard cell has demonstrated that the Clark and Weston types are both reproducible to a very high degree of accuracy, and that when properly set up both may be depended on within a few ... parts in for a year at least. As these qualities, in connection with the concreteness and ease of reproduction of the standard cell, seem to point to it as the logical choice for the second fundamental electrical unit, a redetermination of the temperature formulae has been undertaken. On account of the very small effect of temperature variations on its electromotive force and the absence of cracking at the amalgam terminal, distinct advantages over the Clark cell, an investigation of the Weston cell was first made. A redetermination of the temperature formula of the Clark cell will, however, also be undertaken.
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