CHEM 111 Lecture Notes - Black-Body Radiation, Diffraction, Refraction
Document Summary
Recitation still meets next week (no lab, though) Visible light a part of a continuum of radiation. Speed all em radiation moves at the same speed in a vacuum, namely, the speed of light. C = 3. 00 x 108 m / s. Wavelength ( ) distance from one point on a wave to the corresponding point on the next, units of nm, pm, or angstroms ( , 10-10 m) Frequency ( ) number of waves per second, units of 1 / sec (sec-1, or hertz) All 3 related by c = x . Ir radiation is used by chemists to determine what type of bonds are in a molecule. O bond will absorb ir radiation of wavelength 9. 6 m. What is the frequency of that radiation in hz? (c = 3. 00 x 108 m /s : 31. 25 hz, 3. 1 x 1013 hz, 3. 2 x 10-14 hz, 3. 20 x 10-14 hz, 3. 125 x 1013 hz.
