( n. )
An instrument for measuring minute quantities of radiant heat, especially in different parts of the spectrum; -- called also actinic balance, thermic balance.
( n. )
An instrument for measuring minute quantities of radiant heat, especially in different parts of the spectrum; -- called also actinic balance, thermic balance.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012