Reduction of Twenty Years' Photographic Records of the Barometer and Dry-Bulb and Wet-Bulb Thermometers, and Twenty-Seven Years' Observations of the ... Observatory, Greenwich (Classic Reprint) - Hardcover

George Biddell Airy

 
9780366160921: Reduction of Twenty Years' Photographic Records of the Barometer and Dry-Bulb and Wet-Bulb Thermometers, and Twenty-Seven Years' Observations of the ... Observatory, Greenwich (Classic Reprint)

Synopsis

Long-running meteorological records, now distilled from Greenwich’s own archives, shown in photographic detail.

This volume presents three linked series of results from the Royal Observatory, Greenwich. It covers twenty years of photographic barometer records, twenty years of dry-bulb and wet-bulb thermometer data, and twenty-seven years of eye observations of earth temperatures. The work explains the equipment and methods used to produce continuous photographic traces, how numbers are extracted, and how instrumental corrections are applied. The result is a cohesive set of tables and plates that illuminate long-span trends in atmospheric and earth temperature readings.

The book combines narrative on the recording apparatus with practical explanations of the data reduction, plus the tables and illustrative plates that display results and comparisons across years and conditions. It’s a detailed reference for understanding historical meteorological observations and their interpretation.

  • Three parallel series of results: barometer, dry-bulb and wet-bulb thermometers, and earth-temperature observations.
  • Descriptions of photographic self-registering devices and the process of turning images into numbers.
  • Explanations of data corrections, useful tables, and illustrative plates spanning mid-19th century to the early 1870s.
  • Historical context for long-term meteorological measurements made at Greenwich.

Ideal for readers interested in the history of meteorology, data collection methods, and long-range climate observations.

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