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Psychrometric tables for obtaining the vapor pressure, relative humidity, and temperature of the dew-point. From readings of the wet and dry bulb thermometers. Prepared ... by ...

At head of title: U.S. Dept. of Agriculture, Weather Bureau. siris_sil_32796 ...
The Hindu

Explained | What is relative humidity and why does it matter on a hot day?

Relative humidity is a simple concept as weather phenomena go – but it has significant, far-reaching consequences for how we must take care of ourselves on a hot or wet day. Humidity is the amount of ...
insider.si.edu

Psychrometrical table: For determining the elastic force of aqueous vapor and the relative humidity of the atmosphere from indications of the wet and the dry-bulb thermomether ...

Coffin, James Henry. 1856. Psychrometrical table: For determining the elastic force of aqueous vapor and the relative humidity of the atmosphere from indications of the wet and the dry-bulb ...