Assertion: luminosity | /r/HasProperty | measured
Facets:
value: if however
type: OTHER
Source sentences:
text: If however, the luminosity of a star can be measured or inferred from other means (eg by spectroscopic comparison) then we can actually use equation 4.6 to determine the radius of the star.
text: Luminance on the other hand is a measure to describe the perceived brightness of a color (Encyclopædia Britannica: "luminance, or visually perceived brightness").
text: Put another way, the luminosity is the measure of how much energy per unit time the star is releasing (i.e. the rate of energy release).
text: A star's luminosity is measured according to the relevance to the sun.