Waves. By Sandrine Colson-Inam, Ph.D. References: Conceptual Physics, Paul G. Hewitt, 10 th edition, Addison Wesley publisher http://www.physicsclassroom.com/Class/waves/wavestoc.html http://www.physicsclassroom.com/Class/sound/soundtoc.html. Outline. The Nature of a Wave
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By Sandrine Colson-Inam, Ph.D
has a crest and a through and travels from
one location to another
Speed = Wavelength * Frequency
v = f *
The discussion above pertains to the reflection of
The Doppler effect is of intense interest to astronomers who use the information about the shift in frequency of electromagnetic waves produced by moving stars in our galaxy and beyond in order to derive information about those stars and galaxies.
Second Harmonic Standing Wave PatternHarmonics and Patterns
A pattern with three nodes and two antinodes is referred to as the second harmonic
A pattern with two nodes and one antinode is referred to as the first harmonic
Physical waves, or mechanical waves, form through the vibration of a medium, be it a string, the Earth's crust, or particles of gases and fluids. Waves have mathematical properties that can be analyzed to understand the motion of the wave.
A wave having a form which, if plotted, would be the same as that of a trigonometric sine or cosine function. The sine wave may be thought of as the projection on a plane of the path of a point moving around a circle at uniform speed. It is characteristic of one-dimensional vibrations and one-dimensional waves having no dissipation.
The sine wave is the basic function employed in harmonic analysis. It can be shown that any complex motion in a one-dimensional system can be described as the superposition of sine waves having certain amplitude and phase relationships. The technique for determining these relationships is known as Fourier analysis.
y = A sin (2p/l (x – vt))
y = A sin (2p/l (x + vt))