# Wave Formulas

A wave is a movement caused by a disturbance, and it travels through a medium.

 Wave Classification Mechanical waves These are waves in which propagation involves the transport of kinetic and potential energy and are dependent on the elasticity of the medium. Electromagnetic waves These are waves generated by oscillation of electric charges, where propagation does not depend on the medium in which they are propagated, so they can happen in a vacuum. Longitudinal waves They are the waves married by vibrations in the same direction as the propagation. Transverse Waves These are the waves caused by vibrations perpendicular to the propagation direction. One-dimensional waves They are those that propagate in only one direction, like waves in strings and strings Two-dimensional waves They are those that spread over a surface, like water in a lake when throwing a stone; Three-dimensional waves They are able to propagate in all dimensions, such as light and sound. Wave propagation speed Propagation Speed    Wave reflection 1st Law of Reflection The incident radius, the reflected radius and the line perpendicular to the reflecting surface at the point of incidence are always contained in the same plane. 2nd Law of Reflection The angles formed between the incident radius and the perpendicular line and between the reflected radius and the perpendicular line always have the same measurement. Wave refraction 1st Law of Refraction The incident radius, the line perpendicular to the boundary at the point of incidence and the refracted radius are contained in the same plane. Snell's Law         Wave Overlay Elongation    Amplitude    