If the Sun was producing its energy by slow contraction assuggested by Helmholtz and Kelvin, estimate the amount bywhich the radius of the Sun has to decrease every year toproduce the observed luminosity.

Name: If the Sun was producing its energy by slow contraction as suggested by Helmholtz and Kelvin, estimate the amount by which the radius of the Sun has to decrease every year to…
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The Kelvin–Helmholtz mechanism is the process by which the surface of a star or planet cools which…

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Is this a blackbody radiation graph

If the Sun was producing its energy by slow contraction as suggested by Helmholtz and Kelvin, estimate the amount by which the radius of the Sun has to decrease every year to produce the observed luminosity.