309.5 eV to nm

309.5 eV = 4.006 nm

eVnm
294.5 eV4.21
299.5 eV4.1397
304.5 eV4.0717
309.54.006
314.5 eV3.9423
319.5 eV3.8806
324.5 eV3.8208

309.5 eV = 4.006 nm

Formula

E(eV) = 1239.84 ÷ λ(nm) · f(THz) = E(eV) × 241.799 · E = hc/λ = hf