Properties of Light

Electromagnetic radiation with “short” wavelength (450 - 700 nm)

Waves (Lenses and Refraction)

Particle (Photoelectric absorption)

Duality

Wave Property Particle Property

Frequency-wavelength Energy-momentum

c=lf E=hf

p=h/l=E/c

c=2.97x108 m/s h=6.63x10-34 J/Hz

6000 Å ~ 2 eV

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