( n. )
An instrument consisting in part of a differential thermometer. It is used for measuring changes of temperature produced by different conditions of the sky, as when clear or clouded.
( n. )
An instrument consisting in part of a differential thermometer. It is used for measuring changes of temperature produced by different conditions of the sky, as when clear or clouded.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012