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Originally Posted by J_Player
In the case of diamonds, isn't there a diamond molecule which consists of quite a few carbon atoms bonded into a structure?
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Carbon atoms can bond a number of different ways, and maybe graphite and bucky balls are considered to be all-carbon molecules. But diamond is a continuous carbon lattice.
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When I look at the difference between graphite molecules and diamond molecules, it seems that maybe there is some basis to say they have distinct molecular resonant frequencies. It appears that the molecules for graphite, diamond, and several other all-carbon materials are of different size and mass, which would support the notion of different resonant frequencies.
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Certainly mass and volume play a role in
mechanical vibration, just like different bells and different drums produce different tones. But mechanical vibration can't be a basis for LRLs, because a silver dime and a silver dollar would have different mechanical resonances, as would diamonds of different carats.
Since I was addressing NMR and not mechanical vibration, is it possible NMR frequencies are altered by the molecular/lattice structure of the atoms? Maybe. But as you said, "it is highly unlikely anybody could detect this resonance outside an extremely strong electromagnetic field."
- Carl