Lecture+6 - Chapter 6. Introduction to Spectroscopy E = E0e...

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Chapter 6. Introduction to Spectroscopy ( ) 0 ikx t EE e ω = i
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Photon The photon is an elementary particle, the quantum of the electromagnetic field and the basic unit of light and all other forms of electromagnetic radiation . The photon is the force carrier for the electromagnetic force. Boson Symbol: h ν Mass : 0 Electric charge : 0 Spin : 1 hv 11-cis retinal is transformed into the all-trans retinal
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PROPERTIES OF ELECTROMAGNETIC RADIATION 1 ν c= νλ ;= λ c ( ) 0 ikz t EE e ω = i cos sin i ei θ =+ 2 2 T π ωπ ν == c k =
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THE ELECTROMAGNETIC SPECTRUM 1 ν c= νλ ;= λ c 2 u= νλ ;k = ; c n u π λ =
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Calculate the frequency in Hz, the energy in Joules and eV for an X-ray photon with a wavelength of 6.24 A Calculate the wavelength and energy of an NMR signal at 368 MHz 34 6 25 6.626 10 368 10 2.438 10 Eh J s H z J ν −− == × × × = × 25 18 6 2.438 10 6.242 10 1.52 10 J eV ×× × = × 6 0.8146 368 10 c m λ ×
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Waves in one dimension ( ) 0 ikx t EE e ω ⋅− = ( ) 0 cos E Ek x t = ( ) 0 cos HH k x t = Flow of energy: 2 00 0 0 1 22 n I EH E Z == n – refractive index
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This note was uploaded on 02/14/2011 for the course SCIENCE 321 taught by Professor Aaa during the Spring '11 term at Windsor.

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Lecture+6 - Chapter 6. Introduction to Spectroscopy E = E0e...

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