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How many IR photons with a 1.23 mm wavelength are needed to have the same energy...

How many IR photons with a 1.23 mm wavelength are needed to have the same energy as one photon of 205 nm UV light?

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eneys of love light ha = (6.626 X 16:34 55 ) (3x108mis). (205x109 m) (9.78 10-19 eneys of 11R = (6.626x1034 J-3 ) × (3x108 m/

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