http://www.merlot.org:80/merlot/ A search of MERLOT materials Copyright 1997-2013 MERLOT. All rights reserved. Thu, 23 May 2013 15:58:54 PDT Thu, 23 May 2013 15:58:54 PDT http://www.merlot.org:80/merlot/images/merlot.gif http://www.merlot.org:80/merlot/ 44 34 http://www.merlot.org/merlot/viewMaterial.htm?id=80654 A collection of simulations and virtual labs focusing on first-year college physics. An interview with the award winning author can be found in About us at Phet VideoPhET provides fun, interactive, research-based simulations of physical phenomena for free. We believe that our research-based approach- incorporating findings from prior research and our own testing- enables students to make connections between real-life phenomena and the underlying science, deepening their understanding and appreciation of the physical world. To help students visually comprehend concepts, PhET simulations animate what is invisible to the eye through the use of graphics and intuitive controls such as click-and-drag manipulation, sliders and radio buttons. In order to further encourage quantitative exploration, the simulations also offer measurement instruments including rulers, stop-watches, voltmeters and thermometers. As the user manipulates these interactive tools, responses are immediately animated thus effectively illustrating cause-and-effect relationships as well as multiple linked representations (motion of the objects, graphs, number readouts, etc.) PhET Interactive Simulations, University of Colorado, http://phet.colorado.edu http://www.merlot.org/merlot/viewMaterial.htm?id=83322 VR Molecules presents dynamically and interactively the vibration and rotation modes for 24 molecules (out of a more extensive list) containing up to twelve atoms. It allows the user to create and save on his or her hard disk documents containing, much in the same way as Power Point presentations, up to 10 "pages״, each featuring one or two molecules with specific parameters (viewpoint, active modes, etc.). These presentations can be made available through the Internet, with optional sound and text explanations associated with each page.The latest, augmented version of VR Molecules, called VR Molecules Pro 1.1, is available online as well as in a stand-alone version (Mac and Windows).To view a video of the award winning author, go to View VR Molecules - Chemistry Award Winner 2007 video VR Molécules est un logiciel de simulation (en ligne et en mode local) permettant de visualiser et d'explorer les modes de vibration et de rotation des molécules (24 molécules sont disponibles).Il peut tout aussi bien être utilisé par le professeur pour préparer des démonstrations en classe, intégrer des animations (interactives ou non) dans ses documents HTML, que par les étudiants pour revoir les démonstrations présentées en classe et explorer par eux-mêmes la vibration et la rotation des molécules.La plus récente version (1.12) de VR Molécules, est accessible en deux versions : en ligne et en mode local (à télécharger, pour Mac et Windows). http://www.merlot.org/merlot/viewMaterial.htm?id=90614 An interactive applet, with many of the parameters user-defined. http://www.merlot.org/merlot/viewMaterial.htm?id=90604 A multimedia approach to the fabrication steps in making a pn junction diode. http://www.merlot.org/merlot/viewMaterial.htm?id=74434 Interative representation of radioactive decay series: Th232, Pu241, U238, U235. http://www.merlot.org/merlot/viewMaterial.htm?id=90633 Applet and tutorial, with references, quiz, worksheet, and SPICE model. http://www.merlot.org/merlot/viewMaterial.htm?id=89050 This simulation shows the spreading of a wavepacket, a phenomenon which is a direct consequence of the Heisenberg incertainty principle : If the wavepacket is well localized in configuration space, it must have a large width in momentum space. The parts of the wavepacket corresponding to a larger momentum will propagate faster, hence the spreading. http://www.merlot.org/merlot/viewMaterial.htm?id=88896 The animation above shows a simulation of the Young-slit experiment, performed with either photons, atoms or electrons. In this experiment, the rate is low enough so that you can observe the particle impacts one by one. You can change the number of Young fringes as well as the particle rate. http://www.merlot.org/merlot/viewMaterial.htm?id=88471 Explore how an individual Field Effect (FET) transistor is fabricated on a silicon wafer simultaneously with millions of its neighbors. http://www.merlot.org/merlot/viewMaterial.htm?id=88647 A Java applet simulating the Bohr model of the hydrogen atom.