Kelvins harmonic analyser, 1878.
UNITED KINGDOM - AUGUST 20: Invented by William Thomson, Baron Kelvin of Largs, (1824-1907), pioneering Scottish physicist. The harmonic analyser was designed to analyse graphical records of daily changes in atmospheric temperature and pressure. It was brought into use by the Meteorological Office in 1878. The tracing point is taken along the curve to be analysed, and its movement causes the seven discs to rotate. Rolling spheres communicate this motion to the recording rollers. (Photo by SSPL/Getty Images)

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Editorial #:
90736125
Collection:
SSPL
Date created:
20 August, 1996
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Not released. More information
Source:
SSPL
Object name:
10302637
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3504 x 2429 px (29.67 x 20.57 cm) - 300 dpi - 2 MB