Waves, sound, and light

Photon energy

E = hf = hc/λ

h Planck's constant, f frequency, c speed of light, λ wavelength; hc ≈ 1,240 eV·nm

Watch forShorter wavelength, more energy: violet beats red.

Apply it · 3 questions

  1. Photon energy from wavelengthLight and sound · set 1 · easy
  2. Photoelectric threshold wavelengthAtoms and nuclear physics · set 2 · medium
  3. Photon energy vs. wavelengthLight and sound · set 1 · easy