Abstract
THE idea of a clock with an uncompensated pendulum for temperature integration referred to by Mr. Cooke (NATURE, vol. xvii. p. 323 and p. 448) has probably occurred to many persons, and was proposed by me in 1840; I found, however, that it was not new then. Forbes says in his Report on Meteorology (Brit. Assoc. Report, 1832, p. 213):—“A mechanical mode of taking the mean of an infinite number of temperatures has been proposed by M. Grassman, by observing the change of rate caused by the influence of temperature upon the uncompensated pendulum of a clock (Poggendorff, 1825). The idea is a good one, but was proposed long ago by Dr. Brewster (‘Edinburgh Encyclopædia’, art. Atmospheric Clock)”. The chief merit in this matter will belong to the person who puts the idea into a working form which can be proved capable of giving accurate results.
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B. Cumulative Temperature. Nature 17, 486 (1878). https://doi.org/10.1038/017486c0
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DOI: https://doi.org/10.1038/017486c0
