λ_{peak} = \frac{0.290 cm K}{T}

L = 4πR^{2}σT^{4}

L = AσT^{4}

B_{λ}(T) = \frac{2hc^{2}/λ^{5}}{e^{hc/λkT} − 1}

B_{ν}(T) = \frac{2hν^{3}/c^{2}}{e^{hν/kT} − 1}

F = ∫_{λ_{1}}^{λ_{2}} B_{λ}(T)dλ = ∫_{ν_{1}}^{ν_{2}} B_{ν}(T)dν

∫_{λ_{0}−ϵ}^{λ_{0}+ϵ} Bλ(T, λ)dλ ≃ B_{λ}(T, λ_{0}){(λ_{0} + ϵ) − (λ_{0} + ϵ)}

≃ B_{λ}(T, λ_{0}){2ϵ}