Physical constant
Stefan–Boltzmann constant
- σ
- Exact by definition
- physico chemical
Stefan–Boltzmann constant (σ) is 5.67037442 × 10^-8 W⋅m⁻²⋅K⁻⁴. Exact, derived from k, h and c. Values follow CODATA 2018 (2019 SI redefinition).
Value
Value5.67037442 × 10^-8 W⋅m⁻²⋅K⁻⁴
Scientific notation5.670374419 × 10^-8 W⋅m⁻²⋅K⁻⁴
UnitW⋅m⁻²⋅K⁻⁴
Symbolσ
ExactnessExact by definitionExact, derived from k, h and c.
Reciprocal1.763551974 × 10^7
Order of magnitude10^-8
Multiples
× 21.13407488 × 10^-7
× 105.67037442 × 10^-7
× 1005.67037442 × 10^-6
× 1,0005.67037442 × 10^-5
× 0.52.83518721 × 10^-8
× 0.15.67037442 × 10^-9
Provenance
DatasetCODATA 2018 (2019 SI redefinition)
Categoryphysico chemical
Why it mattersExact, derived from k, h and c.
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