Bolometer

[bәu'lɒmitә]

Definition

(noun.) an instrument that measures heat radiation; extremely sensitive.

Typed by Denis--From WordNet

Definition

(n.) An instrument for measuring minute quantities of radiant heat, especially in different parts of the spectrum; -- called also actinic balance, thermic balance.

Typist: Melville

Definition

n. an instrument for measuring minute amounts of radiant heat.

Checked by Helena