Dictionary of Environmental Health
Also known as the whirling psychrometer, an instrument containing a pair of WET AND DRY BULB THERMOMETERS in a housing held at 90° to a handle, the housing and thermometers being rotated manually in the fashion of an old-style football rattle. The instrument is used to measure RELATIVE HUMIDITY.
This is the complete article, containing 51 words
(approx. 1 page at 300 words per page).
