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Unformatted text preview: -approx. 100 ft-am: amplitude modulation-longer range-fm: frequency modulation-shorter range Equations/Calculations: E=h(frequency) c=wavelength(frequency) 1. calculate energy of blue light, wavelength = 4x10^-7 m E=h(c/wavelength) E=(6.626x10^-34x2.9979x10^8)/4.0x10^-7 = 5.0x10^-19J-implicit: for one photon/quantum of light 2. convert E in kJ/mol 5.0x10^-19J/1photon x 1kJ/1000J x 6.03x10^23photons/1mol = 300kJ/mol-reference: typical bond is approx 100-900kJ/mol-blue light CAN affect some chemical bonds Scattering:-higher energy = strong scattering (travel less distance)-violet/blue = more scattered … red = less scattered-why is the sky blue?-sky is blue b/c blue light scatters more-not violet, b/c violet = blue…kinda…(deepest violet not visible to eyes b/c space=black)-sunrise/sunset – red/orange colors b/c longer wavelength = less scattering (travels further)-blue/violet lights scattered earlier b/c more atmosphere...
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- Fall '08
- Chemistry, Wavelength, Electromagnetic spectrum, -slightly shorter wavelength, -very short wavelength, eyes b/c space=black