What is the difference between a square wave and sine wave?
Square waves are the assembly of many sine wave frequencies. In this manner, it is not necessary to focus on a single or on a set of sine wave frequencies. You could illustrate it this way: working with square wave is like using a shotgun, it shoots a broad pattern. Using Sine waves from a frequency generator is more like shooting with a rifle, you work with specific frequencies. This is a more targeted way of zapping.
