Bolometer

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Bolometer \Bo*lom"e*ter\, n. [Gr. ? a stroke, ray + -meter.]
     (Physics)
     An instrument for measuring minute quantities of radiant
     heat, especially in different parts of the spectrum; --
     called also {actinic balance}, {thermic balance}. --S. P.
     Langley.


     [1913 Webster]

From WordNet (r) 2.0 [wn]:

  bolometer
       n : an instrument that measures heat radiation; extremely
           sensitive