Lecture06post

Lecture06post - Lecture 6 Jan 23 Quan0za0on...

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Lecture’6’ Jan.’23’ Quan0za0on’ h4p://www.noao.edu/image_gallery/html/im±6±±.html’
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©2008’ by W.H. Freeman and Company Discovery’of’the’Electron’ •’J.’J.’Thomson’ •’1896’ Crossed’E’and’B’Felds:’ qvB = qE v = E B Crooke±s’vacuum’tube’ Cathode’ray’tube’(CRT)’ Ray’Deflec²on:’ qvB = m v 2 R q m = v BR = E B 2 R = const .
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©2008’ by W.H. Freeman and Company Millikan’Oil’Droplet’Experiment’ mg’ qE’ •’1911’ e’=’1.6x10 -19’ C’ m’=’9.11x10 -31’ kg’
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©2008’ by W.H. Freeman and Company Black-Body’Radia±on’
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©2008’ by W.H. Freeman and Company Rayleigh-Jeans’Law’ S T λ ( ) = 2 c k B T 4 •’1900’
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©2008’ by W.H. Freeman and Company Planck’Spectrum’ R λ ( ) = c 4 8 π 4 ε exp / k B T ( ) 1 •’Max’Planck’ •’1900’ = hc h’=’6.64x10 -34’ Js’
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7’ Long-Wavelength’Expansion’ exp hc / λ k B T ( ) 1 1 + hc / k B T 1 = hc / k B T R ( ) = c
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Lecture06post - Lecture 6 Jan 23 Quan0za0on...

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