36_debroglie - Lesson 36: de Broglie Wavelengths In 1923...

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Lesson 36: de Broglie Wavelengths In 1923 Prince Louis de Broglie proposed a new idea… Could things believed to be particles (like electrons and baseballs) sometimes act like waves? All the stuff discovered so far has shown that what appeared to be waves (EMR) sometimes acted like a particle, so de Broglie just wanted to know if particles could act like waves. Nobody really took de Broglie seriously until Einstein read his paper and agreed with his ideas. de Broglie suggested combining a couple of formulas, one of them a particle type, the other a wave type. p = mv p = h mv = h = h mv λ = wavelength (m) h = Planck's Constant (always 6.63e-34) m = mass (kg) v = velocity (m/s) This formula allows us to calculate the de Broglie Wavelength of a moving particle. For an object to have a wavelength, it must be moving. Day to day objects that are around us have wavelengths so small that we can never hope to measure them. Example 1
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This note was uploaded on 12/02/2011 for the course PHYSICS 235 taught by Professor Staff during the Fall '08 term at Rutgers.

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36_debroglie - Lesson 36: de Broglie Wavelengths In 1923...

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