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.

Temperature (K)

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

Stellar Structure

Knowledge connections

Associated withStellar Structure

Sources

Facts on this topic will be cited from these primary and reference sources.

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.

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Blackbody Surface Flux

Worked example

Highlights

The physics behind it

Knowledge connections

Sources

Blackbody Surface Flux

Worked example

Highlights

The physics behind it

Knowledge connections

Sources