American Association of Physics Teachers Winter Meeting
Short-wavelength laser pointers are readily available, dangerous and very affordable. Using 635nm, 532nm and 405nm laser pointers, we examine the fluorescence spectra of various color Play-Doh samples. The spectra are analyzed using a simple spectrometer made of a web-cam and a section of DVD. We present the spectrometer, and the laser induced fluorescence of the Play-Doh as an activity that helps students understand color, spectra, laser spectroscopy, and the energy of light.
Eric Tomek, Mark F. Masters, and Jacob Millspaw (2011).
Web Cam Spectroscopy of LASER Induced Fluorescence of Play-Doh. Presented at American Association of Physics Teachers Winter Meeting, Jacksonville, FL.