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NYU Physics Department  

Intermediate Experimental Physics II


  The experiments are listed in alphabetical order. Click on the pictures for a larger image.
  Absorption with Half-Life of Ba-137m

There are two parts in this experiment. First, the students determine the absorption of beta and gamma radiation by various materials. Measurements are done with a Geiger-Muller tube and scaler counter. Second, 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 photons.






Download: Absorption with Half-Life.pdf

  Bragg Diffraction

This lab has two goals. The first is to determine the charateristics of x-rays emitted by an x-ray tube. The second is to use the emitted x-rays to determine the distance between atomic planes in common materials,such as NaCl (table salt), LiF and Aluminum (Al). In both cases you will analyze x-ray interference patterns, characterized by Bragg's law.





Download:Bragg Diffraction.pdf

Download:Instructions for the X-Ray apparatus.pdf

  Compton effect

The goal of this experiment is observe the Compton effect and to measure the change in wavelength of x-rays on inelastic scattering from electrons in a solid. Since in the x-ray setup we can only count the number of x-rays per unit time incident on the detector, we need to convert a change in wavelength into a change in x-ray counting rate.




Download:Compton Lab.pdf

Download:Instructions for the X-Ray apparatus.pdf

Download:P6.3.7.1 Leybold Leaflet

  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: Electron Spin Resonance.pdf

frank hertz   Franck-Hertz Experiment

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







Download: Franck Hertz.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: Magnetic Torque.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: Michelson Interferometer.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
  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: Nuclear Spectroscopy.pdf

photoelectric   Photoelectric Effect

The photoelectric effect is a key experiment in the development of modern physics. In this experiment white light is filtered by an interference filter and illuminates a photocell. The maximum energy of the ejected electrons depends only on the frequency of the incident light, and is independent of its intensity! This law appears to be in contradiction with the electromagnetic wave theory of the light, but it becomes understandable in the frame of the corpuscular theory of light.






Download: Photo electric.pdf

Seismometer   Seismometer

For the Seismometer experiment you will be studying the seismic waves that occur when the N, R, or Q train pasess under Meyer. After you will be anaylzing the data on Python.







speed of light   Speed of Light

You will be determining the speed of light by timing the beam path of a laser through various liquids and materials.






Download:Speed of light.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: Two Slit Intereference.pdf