Physics On-Line The physlets (physics applets) on this site were written by several authors who have have given me the liberty to post them on this site for easy access for my physics students and others who may visit this site. You will find physlets produced by Wolfgang Christian  , Fu-Kwun Hwang (of National Taiwan Normal University), Walter Fendt  and others on this site. If you find these physlets useful in your teaching, please send a note of   thanks/praise about the applications you find useful to the original authors. Motion One dimensional motion (explore the position-time, velocity-time and acceleration-time graphs with and without the effect of air resistance in this one dimensional motion) Walter Fendt Free-Fall (explore the position-time, velocity-time and acceleration-time graphs with and without the effect of air resistance in this free-fall motion) Evelyn Patterson Another Free Fall simulation Projectile Motion (compare the calculated range and measured range in this projectile motion, turn on and off the effect of air resistance) Michael Fowler Projectile Motion (another look at projectile) Walter Fendt Projectile Motion in component form (Explore the independence of vertical and horizontal motions in projectiles) Andrew Duffy Another Look at Projectile Motion in component form (set your parameters in this projectile motion demo in order to hit the target) Loren Winters Force and Motion Free-body diagrams Andrew Duffy Another free-body diagram Andrew Duffy Motion of an object on an inclined plane with correspondinf forces Walter Fendt Vector Addition ( forces) Walter Fendt Equilibrium of Forces Walter Fendt Newton Second Law Experiment Walter Fendt Newton's Second Law example (free-body diagram) Andrew Duffy Work and Energy Energy Graphs Andrew Duffy Energy of an oscillating spring Andrew Duffy Motion on a frictionless ramp Andrew Duffy Motion of a ramp Andrew Duffy Pendulum Walter Fendt Spring Pendulum Walter Fendt Circular and Rotational Motion Finding Torque Andrew Duffy Motion of the Center of Mass Andrew Duffy Free-body diagrams (Mass on a string in a horizontal circle) Andrew Duffy Carousel Walter Fendt Lever Walter Fendt Motion with no external force Andrew Duffy Center of Mass three balls Andrew Duffy Rolling Andrew Duffy Waves Wave Propagation Andrew Duffy Transverse and Longitudinal Waves Andrew Duffy Interference Walter Fendt Interference Patterns Wolfgang Cristian and Andrew Duffy Superpostion Andrew Duffy Resonance Walter Fendt Standing Longitudinal Waves Walter Fendt Doppler with source moving Wolfgang Cristian and Andrew Duffy Beats Andrew Duffy Electricity Fixed Charges Wolfgang Christian and modified by Scott Bonham Coulomb Force Scott Bonham Electric Field Lines1 Scott Bonham and modified by Wolfgang Christian. Capacitor Combination Scott Bonham Network of Capacitors Scott Bonham Ohm's Law1 Walter Fendt Ohm's Law Wolfgang Christian and modified by Scott Bonham RC circuit (mirrored on this site) Fu-Kwun Hwang Magnetism Magnetic Field of a Bar Magnet Walter Fendt Magnetic Field of a Current-Carrying Wire Walter Fendt Electric Motor Walter Fendt Electric Generator Walter Fendt Motional EMF Wolfgang Christian and modified by Scott Bonham B-field, Using Right Hand Rule Scott Bonham Electric and Magnetic Fields Scott Bonham AC Circuits Walter Fendt Optics Optics Bench Hidden Optics Interference Demo Ranking Task1 Ranking task2 The above Optics Physlets were Developed by Melissa Dancy with the help of  Wolfgang Christian.  Refracting Telescope Walter Fendt Refraction of Light Walter Fendt Interference of Waves Walter Fendt Astronomy Kepler's First Law Walter Fendt Kepler's Second law Walter Fendt Kepler's Second Law Andrew Duffy Periods Simulation Andrew Duffy Solar System Simulation Andrew Duffy Orbits and Energy Andrew Duffy Binary Star Simulation Aaron Titus Physlets links FDTC mirror site       Web Physics at Davidson College       Physics at Boston University       Contemporary College Physics Simulation Library       Web Physics at MSU       ExploreScience.com       The Solar System Clock Other Resources Multimedia, audio-visual and other resources: Laserdisks : a list of videodiscs produced under the Annenburg/CP project are available: click on link to see titles. Videos available: The titles of the videodiscs above are also available as VHS videos. Click on the link to see other videos available Films : a list of the film loops