(a) If the human body acts like a blackbody, use Wien’s displacement law (see problem 45) to calculate the body’s wavelength of maximum emis

Question

(a) If the human body acts like a blackbody, use Wien’s displacement law (see problem 45) to calculate the body’s wavelength of maximum emission. Assume an average skin temperature of 34°C.
(b) In what part of the electromagnetic spectrum is the light?

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Khoii Minh 3 years 2021-07-22T15:34:33+00:00 1 Answers 8 views 0

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  1. kimcuc
    0
    2021-07-22T15:35:37+00:00
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    Answer:

    (a) 9439.8 nm

    (b) infrared

    Explanation:

    Temperature, T = 34°C = 307 K

    (a)

    According to the Wein’s displacement law

    \lambda _{m}\times T = b

    where, b is the Wein’s constant.

    b = 2.898 x 10^-3 metre kelvin

    λm x 307 = 2.898 x 10^-3

    λm = 9.44 x 10^-6 m = 9439.8 nm

    (b) it lies in infrared radiation.

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