Apparent brightness and luminosity

[@SherlockFootball828]

if r=distance between us and the object in the last equation wouldn't it change to 4pi2r

[@_duhar]

Can luminosity be also expressed in candela?

[@syscloset7238]

thank you! its help me alot!

[@dareto_learn]

Isn't it 4πr²,the formula for surface area?

[@Mrlonetuber]

I understand how you plug in the equation, but I do not understand how you solve for it.

[@maxdeleon7978]

Great stuff u got here

[@Donkeh_]

If L is unknown how would brightness be calculated

[@danielwoodel8402]

Inverse square rule == some melted austronots on the moon.

[@danielwoodel8402]

no really. Think about it!

[@cloudy-nova]

Bigger stars tend to be cooler than smaller stars, no? The sun is hotter than a red giant despite the red giant being bigger

[@rizwanabeer9682]

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[@sparky844]

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[@Aurora-wu9vu]

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[@justsotan1153]

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[@freedom6984]

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[@nawfaljafri]

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