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Classical and Quantum Wave Lab

 

 
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frank hertz   Frank-Hertz Experiment

This experiment is similar to the work of James Frank and Gustav Hertz, which provided further evidence of quantized electron energy levels.

 

 

 

 

 

 

Download: FrankHertz.pdf

 
magnetic torque   Magnetic Torque

In this experiment, students will verify several equalities within magnetism. They will also be able to draw some parallels between magnetism on the macro scale and quantum mechanics. Angular momentum is also discussed.

 

 

 

 

 

Download: MagTorque.pdf

 
photoelectric   Photoelectric Effect

In this experiment, students measure the photoelectric effect as a function of the voltage supplied to a mercury lamp, which produces photons that strike a vacuum diode. The current is measured to find how many electrons are freed. Quantum mechanics and the wave-particle duality of light are discussed.

 

 

 

 

 

Download: Photoelectric.pdf

 
interferometer   Michelson Interferometer

This experient exposes students to the interferometer, which was used to disprove the existence of ether. We split a beam of light with a half silvered mirror and then recombine the two beams to show an interference pattern on a screen. In the experiment we measure the wavelength of the light source and index of refraction of the material which is in this case, air.

 

 

 

 

Download: MInterferometer.pdf

 
 
 
gas law   Coupled Pendulums

The motion of two coupled pendulums is studied. While the general motion of this system may seem complicated, any motion of this system can be described by the sum of two normal modes. In a given normal mode all parts of the system oscillate at the same frequency and pass through their equilibrium positions at the same time. The two normal modes of this system will be observed and the frequency of each mode measured.

 

 

 

Download:Coupled_Pendulums.pdf

 
millikan   Millikan Oil Drop Experiment

Robert Millikan reported in 1910 a method for measuring the charge e, of a single electron by monitering th motion of a droplet of oil suspended in a chamber and subjected to an electrical force. In the laboratory, the student will perform this experiment.

 

 

 

 

 

Download:Millikan oil Drop.pdf
 
  Electron Spin Resonance

In this experiment students measure g, a dimensionless quantity that relates the difference in energy between two levels and the magnetic field present. Line width for one of the resonances is also obtained.

 

 

 

 

 

Download: ElectronSpinResonance.pdf

 
NucSpect1_sm.jpg   Nuclear Spectroscopy

In this experiment students measure and interpret energy distributions of a variety of particles emitted by radioactive nuclei. How these particles interact with matter is also investigated.

 

 

 

 

 

Download: NuclearSpec.pdf

 
  Half-Life of Ba-137m

In this experiment students measure the half life of BA-137m where the "m" means that the Ba is in metastable state and decays to the ground state with the emission of a higher energy photon.

 

 

 

 

 

Download: HalfLife.pdf

 
TwoSlitInterference3_sm.jpg   Two Slit Interference

In this experiment students explore the concept of wave-particle duality by limiting the output of a source to only one photon at a time, then observing an interference pattern through a double slit.

 

 

 

 

 

Download: DoubleSlit.pdf