Calcolatore Flusso Stellare
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W
m
Observed Flux
1,361.1277 W/m²
Observed Flux vs Luminosity
Formula
## Stellar Flux Flux is the power received per unit area at a given distance from a luminous source. ### Inverse-Square Law **F = L / (4π d²)** As distance doubles, flux drops to one-quarter.
Esempio Risolto
Solar flux at 1 AU.
- 01F = L / (4π d²)
- 024π d² = 4π × (1.496e11)² = 2.812e23
- 03F = 3.828e26 / 2.812e23 ≈ 1361 W/m²
Domande Frequenti
What is the solar constant?
About 1361 W/m², the flux from the Sun at 1 AU. It varies slightly with solar activity.
How does flux relate to apparent magnitude?
Magnitude is a logarithmic scale of flux. A difference of 5 magnitudes corresponds to a factor of 100 in flux.
Is flux the same as irradiance?
In astronomy, flux and irradiance are often used interchangeably for power per unit area received from a distant source.