PHYS 1070 Lecture Notes - Lecture 16: Matter Wave, Chlorophyll, Standing Wave
25 Mar 2015
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Phys1070: intro physics for life sci - lecture 16: de broglie waves. Postulated moving particles could have a wavelength. Mass of an e- = 9. 1x10-31 kg. This equation explains the ring result and their dependence on e. Rearranging this equation we also get p2/m. Q: what is the de broglie wavelength of a rock moving 50m/s? m=0. 20kg. Never really know where something is unless you can measure its there. When p(x) is large, the probability of finding the electron at x is large. When p(x) is small, the probability of finding an electron at x is small. = wave function - behaves like waves we have studied but now has a de broglie wavelength. Ie s,p - are maps of probability density. Formation of molecular orbitals occurs when two isolated s orbitals overlap. Sigma orbitals occur when 2 isolated p orbitals head on overlap. Pi orbitals occur when 2 isolated p orbitals sideways overlap.
