Constants & Units · constant
Wien displacement constant
b = 2.897 771 955… × 10⁻³ m K
- Unit
- m K
- Value
- 2.897 771 955… × 10⁻³
- Exact
- yes
- Note
- Peak wavelength × temperature. Divide by a star's temperature to get its colour.
- Symbol
- b
- Category
- Thermodynamic
- Numeric
- 0.002897771955
- Uncertainty
- exact (from h, c, k_B)
Open on the Constants & Units shelf — the interactive card, the filters, and everything alongside it.