103
edits
Changes
From Pumping Station One
→Theory
== Terminology ==
== Terminology ==
* NMR - Nuclear magnetic resonance
* NMR - Nuclear magnetic resonance
* TMS - Tetramethylsilane - A colorless liquid commonly used as a reference standard.
* TMS - Tetramethylsilane - A colorless liquid commonly used as a reference standard. The peak of TMS is used to set a reference of where zero is.
* Proton NMR - What they really mean is a Hydrogen Atom.
* Proton NMR - What they really mean is a Hydrogen Atom.
* Probe - The detector of an NMR. Most commonly, this is Hydrogen-1, but probes for other elements exist. The probe is ultimately just a coil, but it is tuned to the element of interest.
* Probe - The detector of an NMR. Most commonly, this is Hydrogen-1, but probes for other elements exist. The probe is ultimately just a coil, but it is tuned to the element of interest.
* PPM - The unit "chemical shift" is measured in when looking at NMR spectra (x-axis). This corresponds to the shift from the reference frequency from 0ppm.
== History ==
== History ==
* First generation instruments would use a constant RF frequency but ramp the magnetic field up slowly, and this is in fact what this unit did in its original form.
* First generation instruments would use a constant RF frequency but ramp the magnetic field up slowly, and this is in fact what this unit did in its original form.
