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Thursday, January 8, 2009

More About Waves


In science class, we are learning about waves. The basic properties of waves are amplitude, wavelength, frequency, and speed. Amplitude is the maximum distance that the particles of the medium carrying the wave move away from their rest positions. Wavelength is the distance between two corresponding parts of a wave. Frequency is the number of complete waves that pass a given point in a certain amount of time. It is measured in units called hertz. Speed is how far the wave travels in a given length of time. The high part of a wave is called the crest, and the low part is called the trough. A new fact that I learned from http://en.wikipedia.org/wiki/Waves, is that all waves experience reflection, refraction, diffraction, interference, dispersion, and rectilinear propagation. I also learned that a standing or stationary wave is a wave that remains in a constant position.
I think that learning about all kinds of waves is fun because there are so many kinds of waves. There are transverse, electromagnetic, seismic, and gravitational waves. I hope to learn even more over the next few days.

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