A bolometer is
(A) Used for the measurement of thermal radiation
(B) An element which senses optical input and delivers thermal output
(C) Both (A) & (B)
(D) Neither (A) nor (B)
(A) Used for the measurement of thermal radiation
(B) An element which senses optical input and delivers thermal output
(C) Both (A) & (B)
(D) Neither (A) nor (B)