Now playing · 00 Foundations

Photon energy and wavelength

E = 99.99 keV

E=hcλ=hf,hc=1.240 keV⋅nmE = \frac{hc}{\lambda} = hf,\quad hc = 1.240\,\mathrm{keV\cdot nm}

E = hc/λ for x-ray and γ photons. hc ≈ 1.240 keV·nm.

Laser