Assertion: luminosity | /r/RelatedTo | a star's size
Facets:
value: with l= 4πr2σt4
type: OTHER
value: since to a good approximation stars
type: OTHER
Source sentences:
text: Luminosity is also related to a star's size.
text: Luminosities are related to the star's size, since to a good approximation stars radiate like black bodies, with L= 4πR2σT4, where R and T are the radius and effective temperature of the star, respectively.