en.wikipedia.org/wiki/Luminosity

The Stefan–Boltzmann equation applied to a black body gives the value for
luminosity for a black body, an idealized object ...

astronomyonline.org/Science/Luminosity.asp

Science - Formulas. ... Physics - Formulas - Luminosity ... if we know distance and
brightness of a star, we can determine its Luminosity (or actual brightness):.

www.ask.com/youtube?q=Luminosity Formula&v=CaE-OhJetkw

Dec 26, 2012 ... Luminosity of a Star. ... Introductory Astronomy: Luminosity, Temperature, and
Surface Area - Duration: 16:15. P.E. Robinson 5,558 views. 16:15.

www.atnf.csiro.au/outreach/education/senior/astrophysics/photometry_luminosity.html

How is this equation derived? It is simply an application of the luminosity ratio
relationship (4.7).

www.astronomynotes.com/starprop/s3.htm

Mar 23, 2015 ... If you know how much energy the star emits (its luminosity), then you can ... In
formula form, this means the star's flux = star's luminosity / (4 pi ...

answers.yahoo.com/question/?qid=20100210132357AAtLKDg

What is the equation/Formula for finding the luminosity of a star in ... This Site
Might Help You. RE: What is the Formula for Determining the ...

www.e-education.psu.edu/astro801/content/l4_p4.html

The difference between luminosity and apparent brightness depends on distance
. ... Thus, the equation for the apparent brightness of a light source is given by ...

www.astro.cornell.edu/academics/courses/astro201/mag_absolute.htm

The brightness of a star of a given luminosity L, radiated in all directions, falls ...
The basic formula relating the apparent (m) and absolute (M} magnitudes then is.

physics.tutorvista.com/light/luminosity.html

General formula for luminosity is given as: L = 4 π r 2 b. Above formula is used
when we know the distance and brightness ...

cas.sdss.org/dr4/en/proj/advanced/hr/radius1.asp

The luminosity of a star is given by the equation. L = 4pR<sup>2</sup>s T<sup>4</sup>,. Where L is the
luminosity in Watts, R is the radius in meters, s is the Stefan-Boltzmann constant