Wave4. Refraction of Sound Waves. Suppose you are camping on the shore of a lake which is not too wide, maybe 1/2 a mile across or so.
Ripple Tank Simulation. This is a simulation of a ripple tank.
It demonstrates waves in two dimensions, including such wave phenomena as interference, diffraction (single slit, double slit, etc.), refraction, resonance, phased arrays, and the Doppler effect. Hyperphysics.phy-astr.gsu. RPG Diffusor Systems, Inc. Math, Physics, and Engineering Applets. Oscillations and Waves Acoustics Signal Processing Electricity and Magnetism: Statics Electrodynamics Quantum Mechanics Linear Algebra Vector Calculus Thermodynamics Mechanics Miscellaneous Licensing info.
Links to other educational sites with math/physics-related information or java applets useful for teaching: Mechanics with animations and film clips: Physclips. Index of /hbase. Physics animations and film clips: Physclips. School of Music - School of Music. Fourier Synthesis. Dan Russell's Homepage. In July 2011 I joined the Graduate Program in Acoustics at Penn State, where I teach graduate level courses in acoustics and vibration to both resident and distance education graduate students.
In addition, I oversee, manage and market the distance education component of the acoustics instruction, including oversight of the M.Eng. in Acoustics online degree program offered through the Graduate Program in Acoustics. I also pursue research involving the visualization of acoustic phenomena (animations) for educational purposes, an experimental research involving the structural vibration of sports equipment (baseball and softball bats, hockey sticks, rackets, etc) and musical instruments. Raven: Interactive Sound Analysis Software. SHM. Spring-mass oscillator Related Applets: Pendulum / Interrupted Pendulum A Simple Harmonic Oscillator Phase Difference.
Simple Harmonic Motion. In the animation above, the purple curve is the displacement y as a funciton of t, ie y(t).
The red tangent shows its slope, which is dy/dt, the velocity vy, which is shown in the next graph. On that graph, the blue tangent shows the slope dvy/dt, which is the vertical acceleration ay., which is shown in the third graph. (Revise calculus) Let's look at how vy and ay depend on ω. For SHM with amplitude A, let's write. Belting Out A Musical Physics Lesson. Resonance. Resonance The increase in amplitude of oscillation of an electric or mechanical system exposed to a periodic external force whose frequency is equal to or some multiple of the natural frequency of the system.
Natural Frequency The frequency an object will vibrate with after an external disturbance. These frequencies are usually discrete and depend only on the intrinsic physical quantities of the object. In other words, all things have a natural frequency and if we put energy into a thing at its natural frequency, the energy could continue to build up to very high levels. Example #1: Pushing a swing. The vOICe Interactive Soundscape Applet ♫ Draw your own Sound! Click somewhere within the parked car image: The example image will disappear and your first point will appear, together with the soundscape of this single point on the black drawing canvas.
You can at any time pick one of the 16 grey tones from the palette on the right to draw whatever you like, and even add shading. The vOICe applet will incrementally update the soundscape for the changes you make. The right mouse button acts like an <Undo> button, removing point by point what you have drawn with the left mouse button. With the <Cursor> checkbox you can activate a sound cursor, indicating the position of the graphical cursor in your sound design. From image to sound. Campanella Associates (Acoustics Consultants) - Acoustics FAQ. ///// Minor format revisions 19 December 2011 AJC /////.
For global compatibility, only ASCII symbols are used. Aims: To make acoustics accessible to a wider public. Table of Contents for Art Ludwig's sound page. The Physics Classroom. HyperPhysics. Calculators, Lessons, and Worksheets. Math Topics. The Mayan Pyramid - David Lubman. You will hear two Quetzal bird chirps (recorded in a rain forest) followed by two chirped echoes stimulated by a handclaps at the pyramid (recorded by me in January 1998).
We must not expect the sounds to be identical. Just recognizably similar. DOSITS: Interactive. Acoustics.org. Acoustical Society of America. Musimathics. Faber Acoustical. AudioXplorer - Sound analyzer for Mac OS X. Features Real-time analysis AudioXplorer provides real-time analysis window where user can visualize the sound, spectrum and sonogram. Several real-time windows can be opened simultaneously. Static analysis AudioXplorer provides static analysis window: user can record or generate any sound and performs operation on it.
Easy-to-use AudioXplorer is very easy to use with it Aqua interface (several windows can be opened at a time, drag-and-drop support, view appearance can be customized) Plug-ins and Audio Units Effects AudioXplorer supports its own Cocoa plug-ins architecture as well as Audio Units Effects plug-ins, the new MacOS X plug-in standard. And much more... Record sound directly inside AudioXplorer from any source Generate sound (sinus, triangle, sawtooth, etc.) Ganymede Plasma Wave Observations. Introduction In the December 12, 1996 issue of Nature Galileo Plasma Wave observations are shown which provide evidence that Jupiter's moon Ganymede possesses its own magnetosphere. This page summarizes the data used in "Evidence of a Magnetosphere at Ganymede from Galileo Plasma Wave Observations" by D.
A.