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Luminosity - Wikipedia


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

Formulas - Luminosity - Astronomy Online


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.

Luminosity of Stars - Australia Telescope National Facility


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

Properties of Stars - Astronomy Notes


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 ...

What is the Formula for Determining the luminosity of a star? | Yahoo ...


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 ...

Luminosity and Apparent Brightness | Astronomy 801: Planets, Stars ...


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

Absolute Magnitudes


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.

Luminosity, Luminosity of the Sun | Physics@TutorVista.com


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

Finding the Radius of a Star - SkyServer - SDSS


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

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Luminosity of Stars: Radius & Surface Temperature


The luminosity of a star depends upon radius and surface temperature. ... In the equation below L = luminosity and R = radius. Let's say the radius of the star is 5  ...

Luminosity - Hertzsprung-Russell Diagram - NAAP - UNL Astronomy


Luminosity is the total energy that a star produces in one second. It depends on both the radius of the star and on its surface temperature. One can calculate ...



This equation allows you to find the energy of a moving object if its mass and velocity are ... VARIABLES: L, is Luminosity of the emitter, (in Joules per second).