The Physics
Hypertextbook
Opus in profectus

The Nature of Waves

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Discussion

definition

examples, examples, examples.

basic properties

types 1

classed by medium

types 2

classed by orientation of change

types 3

classified by duration

speed, amplitude, wavelength, period, phase, frequency

s(x,t) = ∆s sin

ft −  x ⎞⎤
⎠⎦
λ

seismic energy propagates through the Earth within the 50 Hz to 0.001 Hz range! The expression "long period" (greater than 10 seconds) and "short period" (less than 1 second or greater than 1 Hz)

types 4

classified by appearance