Luminosity Law
In 1922, Hubble published the result of his investigations on bright nebulae. One part of this work is the Hubble luminosity law for reflection nebulae which make a relationship between the angular size (R) of the nebula and the apparent magnitude (m) of the associated star:
- 5 log(R) = -m + k
where k is a constant that depends on the sensitivity of the measurement.
Read more about this topic: Reflection Nebula
Famous quotes containing the word law:
“Here, lads, we live by the law of the taiga. But even here people manage to live. D’you know who are the ones the camps finish off? Those who lick other men’s left-overs, those who set store by the doctors, and those who peach on their mates.”
—Alexander Solzhenitsyn (b. 1918)