deletions | additions       diff --git a/section_Methods_textit_experimental_set__.tex b/section_Methods_textit_experimental_set__.tex  index 2f38004..f9f10ba 100644  --- a/section_Methods_textit_experimental_set__.tex  +++ b/section_Methods_textit_experimental_set__.tex 
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In our experiment, we were performing NMR on $H_{2}O$. As shown in Fig. ,the bottle of water was inserted into the center of the solenoid. The parts of the apparatus which were key to performing the NMR are the solenoid, Helmholtz coils, and gradient coils, the magnetic field of ewhich could all be varied separately, as well as the bandpass filter, discussed below.//  The solenoid, with a coil constant of 15mT/A, was used to apply a magnetic field to polarize the water. The magnetic field of the solenoid could be varied used a variable curent current  input. The field of the Helmholtz coils, which effectively artificially increased or decreased the Earth's magnetic field applied in the sample, was adjusted using a separate variable current input. The gradient coils changed the gradient of the magnetic field in the x, y, and z directions, but the gradient was not varied over the course of this experiment. A bandpass filter, part of the NMR instrument, was used to only let through frequencies around the Larmor precession frequency and reduce and background noise such as 60 Hz fluctuations in the field due to current-carrying wires in the room.