Luminosity is measured in
A) watts per square meter.
B) joules per second or watts.
C) parsecs.
D) arcseconds per year.

Question

Quizplus · Accepted Answer

Luminosity, in the context of astronomy, is the total amount of energy emitted by a star, galaxy, or other astronomical object per unit time. It is typically measured in joules per second, which is equivalent to watts. This measurement reflects the total energy output of an object, making it a fundamental quantity in understanding the intrinsic brightness of celestial bodies. Options A, C, and D refer to different units or measurements that are not used to express luminosity.

Luminosity Is Measured in