deletions | additions       diff --git a/A_bottle_of_the_substance__.tex b/A_bottle_of_the_substance__.tex  index 7d60e22..f5ae0c1 100644  --- a/A_bottle_of_the_substance__.tex  +++ b/A_bottle_of_the_substance__.tex 
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A bandpass filter, part of the NMR instrument, was used to restrict the frequencies to those around the Larmor precession frequency and to reduce and background noise such as 60 Hz fluctuations in the field due to fluorescent lighting in the room. \textbf{add information regarding the tuned amplifier} \\\\  In order to obtain the data, the oscilloscope measured the amplitude of the oscillating decaying signal, expressed as a voltage, which corresponded to the magnetization of the sample. The oscilloscope was also used to measure the Larmor precession frequency, which was measured over ten cycles. \textbf{screenshots?} \\\\  To summarize the electronics used, a simplified block diagram is shown in Fig.~/ref{fig:block}.