Penn State Harrisburg

Physics

Steve Carabello

Labs used in Physics 214


Labs used in Spring, 2007
Basic Optics Manual From Pasco. Lab 1 was most of Experiments 2, 3, 4, and 5 from this manual: specular reflection (from a flat survace), dispersion, refraction and Snell's Law, and total internal reflection. Lab 2 was Experiment 9 from this manual: Focal Length of a Thin Lens.
Polarization Activity Not a full lab, but a series of activities related to polarization, using Pasco's microwave optics sets. Note that, while not listed here, polarization by reflection was also addressed using the microwave optics sets, and several topics (stacking polarizers, birefringence, photoelasticity, and polarization by reflection) were also addressed using visible-light polarizing films, calcite crystals, plastic wrap, etc.
Diffraction Determining the wavelength of a laser (either tube or laser pointer) using a diffraction grating. Then, use that wavelength to determine the thickness of a human hair (using the single-slit equation), and the track spacing on a CD.
Grating Spectrometer Getting familiar with a grating spectrometer, by finding the spectral lines from a Helium tube.
The Hydrogen Spectrum and the Bohr Model Using the same grating spectrometer as the prior lab, to determine the wavelengths of the Hydrogen spectrum; analyze this relative to the preductions of Balmer's formula and the Bohr model, with the Rydberg constant.



Other Lab Handouts
The only other labs that had been used were rougher versions from the above list, or things done for extra credit (from the manual for the Microwave Optics set, and a manual for Pasco's geiger tubes.)
I attempted a double-slit experiment using the microwave optics sets one semester, inspired by what Mike Gallis has done at Schuylkill. However, it did not work out well. One issue: due to reflections and other issues, only a limited number of microwave optics setups seem to work well in the classroom at any one time -- otherwise, results fluctuate so wildly (depending on where people are standing, etc.), that it's hard to get useful results. Also: the distances for the source/slits/sensor matters for the double-slit case, but doesn't for the polarization activity.


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