Stellar physics · F = σ T⁴
Blackbody Surface Flux
The power radiated per square metre by a blackbody at a given temperature. The Sun's photosphere emits about 63 megawatts per square metre.
Surface flux6.294e+7W/m²
Formula: F = σ T⁴
Worked example
With the default inputs, blackbody surface flux evaluates to 62939000 W/m² — Sun's surface → ~6.3 × 10⁷ W/m². The validator recomputes this against the known value on every build, so the formula is checked, not asserted.
Highlights
- ›Sun's surface: ~6.3 × 10⁷ W/m²
The physics behind it
Knowledge connections
- Associated withStellar Structure
Sources
The primary and reference sources this topic draws on.
- NASANational Aeronautics and Space Administration
Mission data, planetary science, space telescopes, and public-domain imagery.
Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.