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Physics for the 21st Century

Physics for the 21st Century
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Physics Flash Animations We have been increasingly using Flash animations for illustrating Physics content. This page provides access to those animations which may be of general interest. The animations will appear in a separate window. The animations are sorted by category, and the file size of each animation is included in the listing. In addition, I have prepared a small tutorial in using Flash to do Physics animations. LInks to versions of these animations in other languages, other links, and license information appear towards the bottom of this page. The Animations There are 99 animations listed below. Other Languages and Links These animations have been translated into Catalan, Spanish and Basque: En aquest enllaç podeu trobar la versió al català de les animacions Flash de Física. Many animations have been translated into Greek by Vangelis Koltsakis. Most animations have been translated into Hungarian by Sandor Nagy, Eötvös Loránd University.

Physics 121.6 Applets The following is a list of applet collections that you may find useful. In the table above however I have links to a few of the many applets available on the web that I think are most useful in illustrating the concepts of this course. Applets 1 - Graphs of Position and Velocity This Applet shows a cow on roller skates! You can give the cow an initial position, an initial velocity and an initial acceleration and then you can see what happened when you click on "RUN". Note the shape of the position vs. time graph and the velocity verses time graph for each of the following cases. Try different non-zero initial velocities with zero acceleration. This second applet displays much the same thing. Run Applet... Applets 2 - Vector Addition This Shockwave applet shows the addition of two vectors (Red vector + Green vector = Blue vector). Run Applet... Another applet which shows much the same thing in a slightly different way.... Run Applet... Applets 3 - Projectile Motion Run Applet...

Could High-Dive Jumpers Leap Over This Whole Pool? This is an older video from the World Championship in Dødsing. That’s about all I know except that it’s in Oslo, Norway. Watching this shows several very entertaining jumps. There are also a few jumps that look a little too close to the far edge of the pool. That makes the jump doubly scary. So, is it possible to run and jump from the high dive and hit the far end of the pool? Gathering Information After looking around on Google Maps, I found the location of the high dive. That’s about 16 meters from the end of the platform. Projectile Motion Yes, there is some guy jumping off a platform — in physics we would call this projectile motion even though he isn’t being “launched” like you might think. Since the only force is in the vertical direction, I can write the following two force equations. The acceleration in the horizontal (x-direction) would be zero and the acceleration in the vertical direction would be -g (or -9.8 m/s2). Since the x-velocity is constant, we can write the following:

10 Strange Things About The Universe Space The universe can be a very strange place. While groundbreaking ideas such as quantum theory, relativity and even the Earth going around the Sun might be commonly accepted now, science still continues to show that the universe contains things you might find it difficult to believe, and even more difficult to get your head around. Theoretically, the lowest temperature that can be achieved is absolute zero, exactly ? One of the properties of a negative-energy vacuum is that light actually travels faster in it than it does in a normal vacuum, something that may one day allow people to travel faster than the speed of light in a kind of negative-energy vacuum bubble. One prediction of Einstein’s theory of general relativity is that when a large object moves, it drags the space-time around it, causing nearby objects to be pulled along as well. Relativity of Simultaneity Since this extra dimension is so small, only tiny objects, such as particles, can move along it. Antimatter Retrocausality

Conservation of Energy | Circus Physics | Classroom | Circus The aerial acrobatics of the Russian Barre routine require exquisite balance, timing, and years of training. That's not enough though; conservation of energy plays a big role as well. At the top of the jump, Anna's energy is entirely potential but as she falls, her energy turns kinetic. Landing on the bar, the energy changes form once more, stored as elastic energy in the bending bar. This unit explores the basics of these three common forms of energy. Watch the Video Questions to Consider While Watching the Video What forms of energy do you see? Digging Deeper As Anna jumps and lands on the bar, her energy changes forms multiple times, but notice that her total energy, the bar on the right, never changes. At the top of the jump, Anna's energy is entirely in the form of gravitational potential energy, P. P = mgh As she begins to fall back down, her velocity increases as her height decreases. K = ½mv² U = ½kd² Your Turn Use the concepts and formulas from this unit to figure out the following:

Solar Panels, Roof Tiles, Photovoltaic Systems | Home, Business & Utility-Scale Solutions | SunPower Special Relativity Special Relativity These pages are ok as far as they go, but they are missing the planned highlight, to show you what things actually look like when you travel at near the speed of light. I hope to have the opportunity to develop these pages further as time permits. Here is my opinionated Guide to Special Relativistic Flight Simulator Sites. Meanwhile, these pages comprise an animated introduction to the elements of Special Relativity. And don't miss Prasenjit Saha's Interactive Lorentz Transformations. © 1998, 1999 Andrew Hamilton. Forward to The Postulates of Special Relativity Hey, get me back to Falling into a Black Hole Unless otherwise stated, clicking on images gives you enlarged versions thereof, which may be easier to view in a classroom environment. Special Relativity: Index Andrew Hamilton's Homepage Other Relativity and Black Hole links

Physics Flashlets Michael Fowler See also our Applets! This is a collection of Flash animations to make learning physics easier! They were created by myself and my students Jacquie Hui Wan Ching and Heather Welch, and Michael Timmins and , in the summer of 2003. Pythagoras: prove Pythagoras’ Theorem fast by moving triangles around with your mouse. Eclipse of the Moon: a short movie of the Moon moving through the Earth’s shadow, and how it appears from Earth. Ptolemy's Epicycles for Inner Planet Motion: actually a simplified version, with just the basic epicycle idea illustrated. Ptolemy's Epicycles for the Outer Planets: again, just the basic epicycle idea. Earth-Mars Line of Sight in Two Models. Kepler’s Laws: construct your own planetary orbits and check Kepler’s Laws! The Inner Planets: a movie of the inner planets in orbit ... and here are the Outer Planets. Trip to Mars! The Doppler Effect Animation shows expanding rings of sound—and a microphone clicks as each ring hits. Chinese Version

StarChild: The Solar System The Solar System Listen to an audio version of this page. Solar System Activities The StarChild site is a service of the High Energy Astrophysics Science Archive Research Center (HEASARC), Dr. Alan Smale (Director), within the Astrophysics Science Division (ASD) at NASA/GSFC. StarChild Authors: The StarChild Team StarChild Graphics & Music: Acknowledgments StarChild Project Leader: Dr.

The Large Hadron Collider The Large Hadron Collider (LHC) is the world’s largest and most powerful particle accelerator. It first started up on 10 September 2008, and remains the latest addition to CERN’s accelerator complex. The LHC consists of a 27-kilometre ring of superconducting magnets with a number of accelerating structures to boost the energy of the particles along the way. Inside the accelerator, two high-energy particle beams travel at close to the speed of light before they are made to collide. Thousands of magnets of different varieties and sizes are used to direct the beams around the accelerator. All the controls for the accelerator, its services and technical infrastructure are housed under one roof at the CERN Control Centre. How many kilometres of cables are there on the LHC? Download the LHC guide [PDF] CERN takes safety very seriously. Read about the safety of the LHC Take a virtual tour of the Large Hadron Collider