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Keywords = de l’Isle thermometer

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16 pages, 10425 KB  
Article
Pressure and Temperature Observations in Venice by Bernardino Zendrini from 1738 to 1743
by Dario Camuffo, Antonio della Valle and Francesca Becherini
Atmosphere 2025, 16(7), 759; https://doi.org/10.3390/atmos16070759 - 20 Jun 2025
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Abstract
This study aims to recover, interpret and analyse the early meteorological observations made in Venice by Bernardino Zendrini from 1738 to 1743. Zendrini used a cistern barometer, an Amontons-type air thermometer and an additional mercury thermometer, i.e., a de l’Isle one. By comparing [...] Read more.
This study aims to recover, interpret and analyse the early meteorological observations made in Venice by Bernardino Zendrini from 1738 to 1743. Zendrini used a cistern barometer, an Amontons-type air thermometer and an additional mercury thermometer, i.e., a de l’Isle one. By comparing and interpreting the existing details, the instruments have been re-imagined, interpreted and discussed; finally their unknown scale and calibration points have been calculated. The barometer readings needed standard corrections, which were not known at that time. The scale of the air thermometers was in inches of mercury. Zendrini used a reversed scale, with boiling water set to 0, but neglected the second calibration point and the length of the tube. In addition, he gave the thermoscopic readings without the corresponding pressures. The methodology for the calibration, validation and transformation of the readings into modern units, i.e., hPa and °C, is carefully discussed. This paper provides and analyses new data, and improves our knowledge about the history of science, meteorological measurements, instruments and observations in the first half of the 18th century. Full article
(This article belongs to the Section Atmospheric Techniques, Instruments, and Modeling)
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