Enter the radius and temperature of a start into the calculator to determine its luminosity.
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Luminosity Formula
The following formula is used to calculate the luminosity of a star.
L = 4 * pi * R2 * SB * T4
- Where L is the luminosity
- R is the radius of the star (m)
- SB is the Stefan-Boltzmann constant (5.670*10-8 W*m-2 * K-4 )
- T is the temperature (K)
Luminosity Definition
Luminosity is defined as the radiant energy or power given off by a star.
Luminosity Example
How to calculate luminosity?
- First, determine the radius.
Calculate the radius of the start.
- Next, determine the temperature.
Calculate the surface temperature of the star.
- Finally, calculate the luminosity.
Calculate the luminosity of the star using the equation above.
FAQ
What is luminosity?
Luminosity is a measure of the radiant power given off by an object. This object is most often a start or large celestial body.
What is radiant power?
Radiant power is the total energy emitted by light-producing object through radiant flux.
