A bolometer is a device for measuring the power of incident electromagnetic radiation via the heating of a material with a temperature-dependent electrical resistance. It was invented in 1878 by the American astronomer Samuel Pierpont Langley.
123) Bolometers are used to measure
Answer is:
Magnetic Radiations
Explanation:
Related RRB SSE Mechanical Question Paper 2014 (Set-1) with Answer Key
Answer is:
720
Explanation:
1 x 1 = 1
1 x 2 = 2
2 x 3 = 6
6 x 4 = 24
24 x 5 = 120
120 x 6 = 720
Answer is: