Properties of light Wave nature Duality Particle nature VE Energy of Q=hv Solution Photons are E-Ae(kr-ol+o)"packets of energy E Electric field vector H: Magnetic field vector Ponting vector: S=EXH 4兀 Spectral Bands (wavelength 2: Wavelength: n=v 2丌 Ultraviolet(UV)300 A-300 nm Visible light 400 nm-700 nm 2丌 Near IR(NIR)700 nm-2.5 um Wave Number:k Chart: 4 February 13, 2001 16.684 Space Systems Product Development MIT Space Systems LaboratoryProperties of Light Wave Nature Particle Nature 2 2 HP w E Duality ’ E Energy of  2 0 a photon Q=hQ Detector c wt 2 Solution: Photons are ( i kr ZtI ) “packets of energy” E Ae E: Electric field vector H: Magnetic field vector Poynting Vector: S c E u H 4S Spectral Bands (wavelength O): Wavelength: O Q 2S QT Ultraviolet (UV) 300 Å -300 nm Z Visible Light 400 nm - 700 nm 2S Near IR (NIR) 700 nm - 2.5 Pm Wave Number: k O Chart: 4 16.684 Space Systems Product Development MIT Space Systems Laboratory February 13, 2001