Assertion: luminosity | /r/HasProperty | equal
Facets:
value: both
type: DEGREE
value: to the total energy
type: OTHER
Source sentences:
text: The luminosity is equal to the total energy produced by the star per unit time.
text: All the colour contrast disappears because the Hue (colour) is removed and the new lightness of the greys in the top row is exactly 50% (127) because the Saturation and Brightness are both equal.