First Radiation Constant

The leading constant of Planck's law, setting how hot bodies radiate at short wavelengths.

Specifications & Metrics

symbol
c1
status
Exact — exact via h and c
value
3.741771852 × 10⁻¹⁶ W·m²

Relative Scale in Constants

Value
3.741771852 × 10⁻¹⁶ W·m²

Core Principles & Analysis