A.J. Vincent-Johnson, A.E. Masters, X. Hu, and G. Scarel, “Excitation of radiative polaritons by polarized broadband infrared radiation in thin oxide films deposited by atomic layer deposition”. J. Vac. Sci. Technol. A vol. 31, 01A111 1-4 (2013).
Tuesday, October 16, 2012
How is it possible that a voltage signal excited by infrared radiation decays as the excitation source remains on? Anita Vincent-Johnson, who graduated in physics at JMU on May 2012, found that the strange phenomenon might be due to chaotic transport in a thermoelectric power generator interacting with infrared radiation. The mystery is not fully unveiled and the team of Dr. Scarel continues the investigations. The latest news were published today:
Monday, October 15, 2012
Why should you study physics? Maybe you want to have a job when you graduate -and- make a lot of money? Perhaps you want to go Medical School? How about Law School? Or maybe Business School? Did you know that acceptance into these very competitive programs is (largely) based on your performance on standardized tests like the MCAT, LSAT, & GMAT? Did you know that Physics majors have the highest scores on these tests? That they have the lowest unemployment rates when they graduate? That they have amongst the highest paying jobs with an undergraduate degree in Physics? Besides, PHYSICS IS FUN! Learn more by watching this short clip, and then learn more about the Physics and Astronomy program at James Madison University
Come learn more about Physics & Astronomy at our OPEN HOUSE this Saturday from 9am to noon! Meet students & faculty, tour our labs, watch really cool physics demos, and learn more about the department, our scholarships, and the process at 10am and 11am in Room 2212 in the Physics & Chemistry building!
Click on the image frame below to see our "WHY PHYSICS?" video!
Tuesday, October 09, 2012
With blogs, Facebook, twitter, etc, and even teaching, we can sometimes forget just how far and wide the discussion reaches and just how small our planet becomes. Three recent examples demonstrates clearly just how large the reach is of JMU's Department of Physics & Astronomy.
1. Dr. Giovanna Scarel on WMRA's The Spark!
WMRA, the Valley's local NPR affiliate hosts a weekly show called "The Spark". This show is WMRA's look into "creativity", they "dig into whatever people are passionate about in the WMRA region: sculpture, model railroading, costume-making, poetry, whatever". On Friday, May 11, Dr. Giovanna Scarel was profiled on "The Spark". What is a photon? Solid state physicist Dr. Giovanna Scarel explains photons and why such tiny things are intriguing. If you missed the interview, you can find the audiocast of it here.
2. Saturday Morning Physics Student Discovers a Pulsar!
For the past two years, Dr. Adriana Banu has organized a 6-week winter enrichment program for area high school students. The idea is to get them exposed to "cutting edge" physics, and to bring some of the excitement of the lab into the classroom for students to witness firsthand.
Cecilia McGough, a senior at nearby Strasburg High School, participated in the 2nd Saturday Morning Physics program at JMU. After her SMP experience, Cecilia spent the summer working at the Green Bank Radio Telescope in West Virginia where she became just the 6th high school student to discover a pulsar! A pulsar is a highly magnetized, rotating neutron star that emits a beam of electromagnetic radiation as the star rotates extremely quickly, just as a lighthouse sweeps out a bright patch of light as it rotates. McGough's pulsar has a period of 185.549 milliseconds and is about the size of Washington D.C.!
3. John C. Wells Planetarium's 2012 End-of-the-World Debunking Reaches South Africa!
At the start of the year, much nonsense was spread on the internet about the Mayan calendar coming to an end, and how that portends the end of the world! Recently, JMU invited Dr. Phil Plait (the "Bad Astronomer") to debunk claims like these and others found online that the end-of-the-world is coming this December (more on this soon!). However, prior to his visit, Planetarium Director Shanil Virani wrote his own article for the Planetarium's website. While this was featured in a local newspaper article, we very surprised to get the email below from a teacher in SOUTH AFRICA that were studying some of these doomsday claims! One of the students in the class actually referred to the Planetarium's 2012 debunking in their discussion and showed the website to her teacher! The email below was sent to Shanil Virani this past summer and is reprinted with permission from the author.
The moral of the story? JMU Physics has an enormous reach! From the Valley, to South Africa, to the distant reaches of the Cosmos!