301 F10 Worksheet 2 Sparks Key

# 301 F10 Worksheet 2 Sparks Key - CH 301 Worksheet 2 Dr....

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CH 301 Worksheet 2 Dr. Sparks, Fall 2010 1. Briefly explain what is meant by "wave-particle duality of light" in your own words. Light is neither a wave nor a particle but rather something different which exhibits properties of both waves and particles. 2. What equation corresponds to the wave nature of light? Diagram the equation as part of your response. Note: diagramming an equation involves labeling each term with its common name, its Greek name if it is a Greek letter, its units (which may have various names) and finally discussing the proportionality of the various terms in the equation. The wave nature of light is described by the equation c = λ·ν, which relates the speed of light (c, meters per second, m·s -1 ) to the wavelength (λ, lambda, meters, m) and the frequency (ν, nu, Hertz, Hz, s -1 ); because the speed of light is a constant in a given medium, wavelength and frequency are inversely proportional. 3. What equation corresponds to the particle nature of light? Diagram the equation as part of your response. The particle nature of light is described by the equation E = h·ν, which relates the energy of a photon (E, joules, J) to the Planck constant (h, joule second, J·s) and the frequency (ν, nu, Hertz, Hz, s -1 ); because the Planck constant is just that, energy and frequency are directly proportional. 4. Using a little algebra, derive an equation that expresses a photon's energy in terms of its wavelength. What proportionality exists between energy and wavelength? c = λ·ν can be rearranged to ν = c/λ

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## This note was uploaded on 01/24/2011 for the course CHEM 301 taught by Professor Wandelt during the Fall '08 term at University of Texas at Austin.

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301 F10 Worksheet 2 Sparks Key - CH 301 Worksheet 2 Dr....

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