A sine wave, sinusoidal wave, or just sinusoid is a mathematical curve defined in terms of the sine trigonometric function, of which it is the graph. It is a type of continuous wave and also a smooth periodic function. It occurs often in mathematics, as well as in physics, engineering, signal processing and many other fields.

Wave propagation is any of the ways in which waves travel. Single wave propagation can be calculated by 2nd order wave equation (standing wavefield) or 1st order one-way wave equation.. With respect to the direction of the oscillation relative to the propagation direction, we can distinguish between longitudinal wave and transverse waves.. For electromagnetic waves, …

Google Wave is an internet application made by Google.Google describes Wave as an application which "lets you communicate and collaborate in real time". This means that Wave can be used for several people to edit a document at the same time, or for a group discussion. Waves can be used in a similar way to a forum, or just for emails and instant messaging between two or more people.