Wien wavelength displacement law constant = 2.897 771 955... × 10−3 m·K
- Symbol
- b
- Value
- 2.897 771 955... × 10−3
- Unit
- m·K
- Uncertainty
- exact (by definition)
- Copy-ready
2.897771955e-3
λmax = b/T — the peak wavelength of a black body. At 5772 K (the Sun) it lands in visible green.
NIST, Fundamental Physical Constants — Complete Listing (2022 CODATA adjustment), retrieved 2026-07-26.
Thermodynamic and chemical constants
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UsePhysics. "Wien wavelength displacement law constant — 2.897 771 955... × 10−3 m·K." UsePhysics.com. https://usephysics.com/reference/wien-displacement-constant. Value from the 2022 CODATA adjustment (NIST). Accessed [date].