Ning Zhu edited Linearly_polarized_light_was_sent__1.tex  over 8 years ago

Commit id: e72ce91445945830e87177bd7fd0ae6d8f4d17d8

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Linearly polarized light was sent through the solenoid containing a glass tube but without any current flowing through it, passed through the polarizer, and detected by the photodiode. We rotated the polarizer around 360 degrees, using 15 degree steps, and recorded the voltage read by the photodetector. We then repeated the previous procedure, but with a current of -3.0 amps running through the solenoid, therefore changing the magnetic field. Magnetic field can be calculated from current using   \begin{Equation} \begin{equation}  \label{magnetic field calculation}  11.1I\frac{mT/A}  \end{Equation} B=11.1I\frac{mT/A}  \end{equation}  ADD A PARAGRAPH EXPLAINING (1) WHY YOU WOULD VARY THE MAGNETIC FIELD (TO MEASURE THE FIELD-INDUCED-ROTATION IN POLARIZATION ANGLE OF THE LIGHT AS IT PASSES THROUGH THE GLASS ROD) AND (2) WHAT THAT ALLOWS YOU TO DO (DEMONSTRATE THAT MAGNETIC FIELD INDUCES A CHANGE, AND DETERMINE THE VERDET CONSTANT, WHICH IS A MEASURE OF HOW LARGE A CHANGE IN POLARIZATION ANGLE CAN BE PRODUCED FOR A GIVEN MAGNETIC FIELD).