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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):.

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 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 ...

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 5,084 views. 16:15 ...



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).

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.

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

Mathematical Applications


Magnitude - Distance Formula - used to give the relationship between the apparent ... Luminosity-Radius-Temperature - the formula that relates these three  ...

Are a star's brightness and luminosity the same thing? | Science ...


Mar 11, 2016 ... We use the equation below to solve for the star's luminosity, relative to the sun's, where L = luminosity and T = surface temperature, and the ...

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Luminosity of Stars - Australia Telescope National Facility


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

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 ...

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


Feb 10, 2010 ... Best Answer: The formula for the Luminosity L = Area * Energy Flux = 4pi R^2 * sigma T^4, where R is the radius and T the temperature.