Question

Find the approximate temperature of a red star that emits light with a wavelength of maximum intensity of 736.07 nm.

Answer 1

We would apply Wien's displacement law which is expressed as

λmaxT = 0.002898mK

where

T is the temperature

From the information given,

λmax = 736.07 nm = 736.07 x 10^-9

T = 0.002898mK/736.07 x 10^-9

T = 3937

The approxinate temperature is 3937 K