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:
“The Law of Triviality ... briefly stated, it means that the time spent on any item of the agenda will be in inverse proportion to the sum involved.”
—C. Northcote Parkinson (1909–1993)