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Planck's Law Calculator

Calculate photon energy at a given wavelength: E = hc / λ. h = 6.626×10⁻³⁴, c = 3×10⁸. Green light λ ≈ 550 nm.

Input
Result
3.9756e-19
Energy (J)
2.4816
(eV)

E = hc / λ = 3.9756e-19 J

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