Definition:First Radiation Constant/Value

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First Radiation Constant: Value

The value of the first radiation constant is:

\(\ds c_1\) \(=\) \(\ds 2 h c^2\)
\(\ds \) \(=\) \(\ds 1 \cdotp 19104 \, 2972 \ldots \times 10^{-18} \, \mathrm {W \, m^2}\)
\(\ds \) \(=\) \(\ds 1 \cdotp 19104 \, 2972 \ldots \times 10^{-15} \, \mathrm {erg \, cm^2 \, s^{-1} }\)