Papers for undergraduate physics classes at U.Va and University of Bath
The links on the right are to the full papers which go with the abstracts below: Non-Newtonian Fluids: Newtonian Fluids, such as water, are encountered daily and are well understood by people from many disciplines. Non-Newtonian fluids are less common and less easy to understand, so they have not been studied as much. For this paper I am going to revisit the principles of Newtonian fluids in some detail before trying to understand any others, then I will talk about how non-Newtonian fluids differ and the different types of Non-Newtonian fluids. Finally I will be talking about current experiments and looking at some future research in the field. Bose-Eistein Condensation: 10 years ago the first Bose- Einstein condensate was made in a laboratory at the University of Colorado, giving a glimpse of a purely quantum mechanical effect in action. Atomic Physicists hope that the implications and techniques of Bose-Einstein Condensation stretch way beyond their new science, and into wider usage in other areas of physics. Holography: This report contains holograms made by the Leith-Upatnieks and Gabor methods. All the holograms were recorded using a Class III Helium-Neon laser with a red light wavelength calculated as λ = 685±55nm using a diffraction grating made by this laser. Zeeman Effect: This experiment contains the measurements of the normal Zeeman shift of the spectral lines of mercury at λ = 546nm, 436nm and 404nm, in fields of up to 18kGauss. The ratio of the Bohr magnetron and the fundamental constants hc was calculated as u0/hc=4.89±0.10×10−5cm−1/Gauss . The mercury source did not exhibit any line splitting from the nuclear spin because it used an isotope where this effect was not present. Atomic Spectroscopy: This
report contains graphs of the atomic spectra of the following elements;
Hydrogen, Helium, Neon, Mercury, Sodium and Rubidium. It also contains
the emission spectra for LED's, filament lamps, blackbody radiators and
absorption spectra for sodium and accurate filters. Using the Balmer
series of hydrogen emission lines, the value of the Rydberg
constant, RH is calculated as 1.086±0.022 x107 m- 1 and the atomic
(Bohr) radius as 0.533±0.11Å. The energy levels corresponding to the
values of n=3,4,5… are calculated and an energy diagram is included
which shows the transitions from these to the n = 2 state. | Scanning Probe Microscopy |
Generally these papers are aimed at 3rd Year Undergraduate, with the widely applied papers aimed at being more accesible for advanced high school or non-physics undergraduates.