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How would you suggest measuring the temp...

How would you suggest measuring the temperature of
(a) The sun
(b) The Earth's upper atmosphere
(c) The moon
(d) The ocean floor, and
(e) Liquid helium ?

Text Solution

Verified by Experts

(a) Sun, by pyrometry
(b) Earth.s upper temperature. As Plp is a function of temperature so temperature can be determined by knowing the density.
(c) The moon, by absorption pyrometry using absorption lines.
(d) The ocean floor : By using Baythoscope.
(e) Liquid helium : By using the principle of adiabatic demagnetisation
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