Stefan-Boltzmann Calculator
Calculate thermal radiation power using the Stefan-Boltzmann law: P = εσAT⁴.
How to Use the Stefan-Boltzmann Calculator
- Enter emissivity (0 to 1).
- Enter surface area in m².
- Enter temperature in Kelvin and click Calculate.
Casos de Uso
- •Thermal engineering and heat transfer.
- •Astrophysics star luminosity calculations.
- •Building energy analysis.
Fórmula
Formula: P = ε × σ × A × T⁴. σ = 5.67×10⁻⁸ W/(m²·K⁴).
Preguntas Frecuentes
What is emissivity?
Emissivity (ε) is a dimensionless value from 0 to 1 indicating how efficiently a surface emits thermal radiation. A perfect blackbody has ε = 1.
What is a blackbody?
A blackbody is an ideal radiator that absorbs all incoming radiation and emits maximum possible radiation at every wavelength. ε = 1 for blackbodies.
Why does temperature have such a strong effect?
Power scales with T⁴, so doubling the temperature increases radiated power 16-fold. This makes temperature the dominant factor in thermal radiation.