VelocityOfWave 2007-06-03 12:19:53 2007-06-03 12:19:53 Definition power clarific. % this is the default PlanetPhysics preamble. as your knowledge % of TeX increases, you will probably want to edit this, but % it should be fine as is for beginners. % almost certainly you want these \usepackage{amssymb} \usepackage{amsmath} \usepackage{amsfonts} % used for TeXing text within eps files %\usepackage{psfrag} % need this for including graphics (\includegraphics) %\usepackage{graphicx} % for neatly defining theorems and propositions %\usepackage{amsthm} % making logically defined graphics %\usepackage{xypic} % there are many more packages, add them here as you need them % define commands here The {\em monochromatic wave} is the fundamental model of the wave motion.\, The vibration in every point along the way of wave motion is harmonic and has the same period time $T$ and the fraquency\, $f = \frac{1}{T}$.\, The {\em wave length} $\lambda$ of the wave motion is the displacement which the wave propagates in a period time: $$\lambda = vT = v/f$$ Thus the formula $$v = f\lambda$$ is valid for the wave motion.