EMR, Light, and Matter

EMR, Light, and Matter - Newton Young Rutherford Thompson...

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EMR, Light, and Matter Ch 301 B. A. Rowland August 29, 2008 Newton Young Rutherford Thompson Einstein
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I-clicker Test Who would you vote for if the presidential election were held today? A. John McCain (Rep) B. Barack Obama (Dem) C. Ralph Nader (Ind) D. Bob Barr (Lib) E. Undecided/Other
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Motivation Transition metal compounds form brightly colored solutions. Why? Reason: Formation of compounds which undergo certain electronic transitions. Light is absorbed—we see the frequencies that are not absorbed. Amount of light absorbed is proportional to the amount of substance in the flask. An example of the use of light for quantitative purposes. How can we describe these effects? We can answer this question halfway Through the class.
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Light as a Wave Light is described exactly by Maxwell’s wave equations. Light consists of an electric field and a perpendicular magnetic field. Wavelength is defined as the distance between two adjacent crests (or troughs) given in units of length. Frequency is defined as the number of crests that pass by per unit time given in Hz (1/s).
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EMR, Light, and Matter - Newton Young Rutherford Thompson...

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