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Published byRalf Jefferson Modified over 8 years ago
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Chapter 1: Nature of light
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waveparticle Wave-particle duality However strange, it correctly describes known phenomena connected with light. E = h
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Optics: the study of light Ray optics Geometrical (ray) optics macroscopic-scale phenomena -light travels in straight lines (rays) -wavelength 0, frequency ∞ -explains reflection and refraction -useful for designing imaging systems Physical (wave) optics microscopic-scale phenomena -light (electromagnetic radiation) is a wave -action of light described by Maxwell’s equations -explains reflection, refraction, dispersion, interference, polarization, diffraction Quantum optics atomic-scale phenomena -light is a photon; has both wave-like and particle- like characteristics -used to analyze light-matter interactions -explains photoelectric effect, lasers
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The electromagnetic spectrum light is identified as an electromagnetic wave with a frequency detected by the human eye c = 3 x 10 8 m/s
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The electromagnetic spectrum
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Radiometric quantities characterizing the energy content of electromagnetic radiation
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differential solid angle d for describing radiant intensity: inverse square law for characterizing irradiance: A steradian corresponds to an area of a sphere equal to r 2. The irradiance decreases inversely with the square of the distance.
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You are encouraged to solve all problems in the textbook (Pedrotti 3 ). The following may be covered in the werkcollege on 7 September 2011: Chapter 1 2, 10, 17 Exercises
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