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====== Magnetic Momentum ======

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[[..:..:prereq20:sppre:spmagmom | Link to Prereqs]]

some familiarity with force, torque, magnetic fields, vector dot product, vector cross product, gradient, current

===== In-class Content =====












==== Lecture: Magnetic Moment====
    *  Magnetic Moment: conceptual definition - tells you about torque response in an external magnetic field ($\vec{\tau}=\vec{\mu}\times\vec{B}$)
    *  formal bits: symbol $\vec{\mu}$, vector, units/dimensions (charge*length^2; torque/magnetic field; energy/magnetic field)
    *  magnetic moment for a current loop: $\vec{\mu}=I\vec{A}$ 
    *  Small Calculation: A particle with mass $m$ and charge $q$ moves at speed $v$ in a circle of radius $R$. What is the magnetic moment of the particle? What is the angular momentum of the particle? What is $\vec{\mu}$ in terms of $\vec{L}$?
    *  force and torque on a current loop in a magnetic field
    *  magnetic momentum and angular momentum for a charged spinning sphere  
    




==== SWBQ Sequence: Spinning Charged Sphere in a Magnetic Field ====

 {{courses:order20:sporder20:spinningchargedsphere.pdf|Spinning Charged Sphere in Magnetic Field}}






==== Lecture: Stern Gerlach Experiment ====

    *  Stern Gerlach Experiment: history and classical prediction
    *  {{courses:order20:sporder20:sg.pdf|Intro to Stern Gerlach}}
    * Let students play with [[https://phet.colorado.edu/en/simulation/stern-gerlach|Stern-Gerlach PhET]]
    * Introduce [[http://physics.oregonstate.edu/~mcintyre/ph425/SpinsOSU.html|OSP Stern-Gerlach Simulation]]

==== Homework ====
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