Mathematics, 30.05.2020 20:04 hcpswalkertl3

The magnitude M of a star is a measure of how bright a star appears to the human eye. It is defined by

M = -2.5 log(B/B₀),

where B is the actual brightness of the star and B₀ is a constant.

(a) Expand the right-hand side of the equation.

(b) Betelgeuse is about 100 times brighter than Albiero. Use part (a) to show that Betelgeuse is 5 magnitudes less bright than Albiero. Let B1 be the brightness of the star Albiero and M1 be its magnitude.

Then 100B1 is the brightness of Betelgeuse, and its magnitude is .

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The magnitude M of a star is a measure of how bright a star appears to the human eye. It is defined...