Ning Zhu edited figures/Screen Shot 2015-10-23 at 12.24.39 AM/caption.tex  over 8 years ago

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Replace this text with your caption The main method 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.