https://lonewolfonline.net/luminosity-flux-stars/
Flux = Luminosity / 4pi*r2
That's the luminosity, divided by the area of a sphere, as defined by the sphere's radius.
That means, assuming a star's luminosity is fixed, the amount of flux changes with the distance to the star.
Alternatively, we could say:
Flux = Luminosity / 4pi*(ct)2
Where r is replaced by ct, which is the speed of light times the travel time to the star at the speed of light, which gives us the distance r.
Any problem with that?
Flux = Luminosity / 4pi*r2
That's the luminosity, divided by the area of a sphere, as defined by the sphere's radius.
That means, assuming a star's luminosity is fixed, the amount of flux changes with the distance to the star.
Alternatively, we could say:
Flux = Luminosity / 4pi*(ct)2
Where r is replaced by ct, which is the speed of light times the travel time to the star at the speed of light, which gives us the distance r.
Any problem with that?
via International Skeptics Forum https://ift.tt/3axZ54r
Aucun commentaire:
Enregistrer un commentaire