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→Theory
Celebrations were had by drinking beer with the machine (beige box partaking as well), and relative quantification of ethanol vs water were undertaken with wobbly, but within an order-of-magnitude results. Further adventures planned... It probably works at a given point. Probably needs electronic shimming if it has been sitting for a while.
Celebrations were had by drinking beer with the machine (beige box partaking as well), and relative quantification of ethanol vs water were undertaken with wobbly, but within an order-of-magnitude results. Further adventures planned... It probably works at a given point. Probably needs electronic shimming if it has been sitting for a while.
= Theory =
= Introductory Theory =
NMR:
NMR:
Like many types of spectroscopy, NMR ultimately produces a squiggly line on a graph.
Like many types of spectroscopy, NMR ultimately produces a squiggly line on a graph.
Taken a step further:<br>
Taken a step further:<br>
In spite of the nucleus being crucial to NMR in that the technique is only useful with certain configurations of the nucleus, [https://www.youtube.com/watch?v=TJhVotrZt9I an atom's configuration of electrons does influence how much an atom is diamagnetically shielded from the effects of RF.]. We use this to our advantage because different electron confiugrations will resonate at different frequencies.
In spite of the nucleus being crucial to NMR in that the technique is only useful with certain configurations of the nucleus, [https://www.youtube.com/watch?v=TJhVotrZt9I an atom's configuration of electrons does influence how much an atom is diamagnetically shielded from the effects of RF.]. We use this to our advantage because different electron configurations will resonate at different frequencies.
* Ultimately, you are producing a spectrum with NMR.
* Ultimately, you are producing a spectrum with NMR.
** If you are performing the typical Hydrogen-1 (Proton NMR) analysis of a sample, where these peaks are on the X-Axis represents different ways the electrons of a given Hydrogen within a compound are configured. For a simple compound where there is hydrogen in just one configuration (H2O / Water), you'd expect one peak. For Ethanol, CH3-CH2-OH, [https://www.youtube.com/watch?v=CjII0Cg882U we'd expect three peaks].
** If you are performing the typical Hydrogen-1 (Proton NMR) analysis of a sample, where these peaks are on the X-Axis represents different ways the electrons of a given Hydrogen within a compound are configured. For a simple compound where there is hydrogen in just one configuration (H2O / Water), you'd expect one peak. For Ethanol, CH3-CH2-OH, [https://www.youtube.com/watch?v=CjII0Cg882U we'd expect three peaks].
The stronger magnetic field, the greater resolution one can achieve. You will occasionally hear of people referring to the strength of the NMR in terms of MHz (as opposed to the strength of the magnetic field in Tesla). When this is the case, they are typically referring to the frequency of of Hydrogen-1 at a given field strength. So, in our case, at 1.4 Tesla, you could say we have a 60MHz NMR. The implication, again, is that it operates at 60MHz when using the Hydrogen-1 probe.
== Terminology ==
== Terminology ==