Ch1b08Lecture01

Ch1b08Lecture01 - A few comments 1 You won’t have to memorize much if anything(this is not biology 2 If you do your work and if your application

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Unformatted text preview: A few comments: 1. You won’t have to memorize much, if anything (this is not biology) 2. If you do your work, and if your application to Caltech was legitimate, then you will pass 3. Lecture notes are VERY important!! For part 1 of this course, the powerpoint presentations of the lectures will be posted after each class (in pdf form). I will also occasionally post written lecture notes that should help focus your studying. OGN is a big, amorphous book – it has good problem sets, but it covers too much material. 4. I will highlight many of our lectures by placing them into the context of real science that is being done at Caltech and elsewhere. You don’t need to know that science to pass this course, but it will hopefully provide an interesting framework for why the material we cover is important. From course evaluations from Winter 07 Chem 1B Heath was very enthusiastic and did a great job conveying his excitement about the subject. Unfortunately I think he had a bit of trouble seeing the material from a beginner’s standpoint and recognizing just how much of it really isn’t intuitive, which made for lectures that went way too fast. It would help if he took about two- third of the equations on the slides, or wrote on the board to pace himself – frosh generally can’t read line after line of equations at natural speaking pace with any comprehension. The course was too easy. (a comment not echoed by too many students) He was a pretty good lecturer but I didn’t really understand the lectures. As a scientist, I’m sure Professor Heath is really really brilliant and intelligent, but as a lecturer, sometimes I don’t think he understands what the students are having problems with. Leonardo Da Vinci Prof Heath - Why do you think that the students were a little confused? Hmmm, Leo. Perhaps if they had actually asked questions during the lectures, things would have been clearer? Leonardo Da Vinci Well probably they are just polite and thought it would be rude to interrupt you? That is possible, Leo. However, interrupting me with questions is always ok. I don’t mind slowing down lectures to answer questions from bright young Caltech students Thursday Today & tomorrow a bit next Monday Also, Mass spectrometry (next Mon) Spectroscopy Units wavenumbers cm-1 A wavenumber is simply 1/ λ , with λ in cm’s. Recall that Energy = E = h ν = hc/ λ , so 1/ λ (= cm-1 ) is an energy ν , or frequency (cycles per second) is also an energy c ≈ 3.0×10 10 cm·s-1 = 3.0e10 cm·s-1 = speed of light in vacuum h = 6.626e-34 J·s (kg m 2 s-1 ) = Planck’s constant B E Light is electromagnetic radiation λ time (wavelength) Spectroscopy Units wavenumbers cm-1 A wavenumber is simply 1/ λ , with λ in cm’s....
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This note was uploaded on 06/05/2008 for the course CH 1a taught by Professor Lewis during the Fall '08 term at Caltech.

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Ch1b08Lecture01 - A few comments 1 You won’t have to memorize much if anything(this is not biology 2 If you do your work and if your application

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