deletions | additions       diff --git a/figures/Screen Shot 2015-10-23 at 12.24.39 AM/caption.tex b/figures/Screen Shot 2015-10-23 at 12.24.39 AM/caption.tex  index 72e0162..23690bf 100644  --- a/figures/Screen Shot 2015-10-23 at 12.24.39 AM/caption.tex  +++ b/figures/Screen Shot 2015-10-23 at 12.24.39 AM/caption.tex 
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The main method idea  is to change the magnetic field and then to observe the corresponding voltage output from photodiode.30mV, 40mV, 50mV and 60mV have been used to supply the magnetic field, and these are all rms values. Calculation method is shown above, and detailed numeric calculation is shown in the appendix.