MERLOT Search - category=2781& A search of MERLOT materials Copyright 1997-2013 MERLOT. All rights reserved. Thu, 19 Dec 2013 23:21:29 PST Thu, 19 Dec 2013 23:21:29 PST MERLOT Search - category=2781& 44 34 Doppler Vary the velocity and notice the wavelength shift ahead of and behind the source. Sound Waves and Music This site contains an extensive set of notes on basic topics in physics. There are extensive illustrations and animations along with the text. Also included are self-quizzes, and shockwave quizzes and tutorials. Superposition Physlet Animates one or two functions of position and time, and their superposition, in separate panels inside the applet. A wide range of functions can be used. There are demonstrations of both the basic physlet and example of exercises using the physlet. Doppler Effect and Shock Wave (Physics) Demonstrates doppler effect with moving point source. Harmonics This applet demonstrates the resulting wave from the combination of the fundamental frequency and a combination of all or none of the first three overtones of a vibrating system. The user is able to adjust the amplitude of these waves and let it run continuously or step by step. The wave may be free at both ends, fixed at one end, or fixed at both ends. All or none of the waves may be shown in different colors or just the sum of all the waves in black. Young's Double Slit Interference This is a classic example of interference effects in light waves. Two light rays pass through two slits, separated by a distance d and strike a screen a distance, L, from the slits. You can change this parameters (drag scrollbars to do it) and you will see the result of interference on the screen. Double Slit Experiment (Physics) Graphical illustration of a double slit experiment. Allows user to change wavelength and slit separation. Includes tools to determine differences in path length between interfering wavefronts. Loaded String Simulation Demonstrates waves on a loaded string--a very light (massless) string with a number of small masses attached to it at equal intervals. As the number of masses increases, the behavior of the loaded string more closely approximates the behavior of a real string where the mass is distributed continuously along its length. The user can adjust the number of particles, their initial positions, and the string tension and damping; can force the string at an adjustable frequency; can "pluck" any one of the masses; can apply a fixed force to any one of the masses; can adjust the amplitudes of the Fourier components; and can observe the the evolution of either the Fourier components (in various formats) or the left and right traveling wave components as the wave damps. Ripple Tank (2-D Waves) Applet Displays wave interference from a wide range of source and barrier configurations. The user can select specific configurations or add sources and barriers themselves. Art Ludwig's Sound Page From an elementary (but accurate) description of sound, including animations, to advanced material such as the solution of the non-linear acoustic equations, boundary value solutions, etc.