BS ('85) Iowa State; MS ('94), PhD ('95) Oregon State
Current Weekly Schedule
Tuesday & Thursday 8-9:50 Physics 101
Tuesday 7:10pm-10:00pm Physics 101 Lab
Wednesday 1:30-3:50 Physics 101 Lab
There is nothing that I enjoy more than the teaching of science. The best way to learn science is by doing science, and I actively support student-centered research projects. Some of the more interesting ones include low pressure flame studies and pattern formation in fluid dynamics. As the academic director for the U.S. Physics team, I am responsible for the selection and training of the top high school physics students in the United States in order for them to compete in the International Physics Olympiad.
I am working with students to rebuild the 500 keV Van De Graff accelerator.
I'm still developing techniques for finding Lyapunov exponents for Hamiltonian systems without numerical integration of the equations of motion. Progress has been made in this area, and I hope to have more results made public soon.
Some exciting results:
- An analytic technique, similar to the Toda-Brunner criteria, for determining an upper limit on the maximal Lyapunov exponent, is under development.
- Evidence exists that shows the Lyapunov exponent can, under some fairly strict conditions, be a smooth function of a coupling parameter. The abstract of this work is available from an APS meeting.
- It appears possible to express the maximal Lyapunov exponent of an ergodic region as a weighted average of the characteristic exponents of the isolated periodic orbits in the region. I'm arguing with a referee over this issue.
- I have been working on developing a quantum Lyapunov exponent which would share definition consequences with the classical exponent. I presented some of my results at a talk in Korea.
- I have done work on developing a parallel computation platform for finding Lyapunov exponents. The platform consists of a PVM or Beowulf type cluster. The code will be available here soon; as well as a CD-ROM image so that you can build your own cluster with a minimum of stress!
Why did it take me nine years to get a master's degree? It didn't! After getting my degree from Iowa State, I spent a few months in Tennessee working with the Appalachian Service Project. Then, I joined the Peace Corps, and spent the next seven years deep in the South Pacific as a high school teacher.
In my spare time, I play the trumpet. I used to want to play on a Monette, but I recently discovered Scodwell Trumpets, and I am now the proud owner of one of his Vegas models, and it is easily the best trumpet I have ever played in my life. I also play on some old Bach Trumpets. Do you play a Bach? Here is a list of serial numbers so you can find out how old your trumpet is.