Lissajous figures with the osciloscope

This is a 3D simulation. Drag to change the angle of viewing.
Sinusoidal voltages are applied to the horizontal and vertical deflection plates, they have the form
	V = Asin(2pft + f), where A is the amplitude, f is the frequency and f is the phase.
Deflection plate is red (black) when it is positive (negative).
The screen is viewed from the front directly when the box "Front" is checked. Click a point on the screen will show the coordinates of that point.
The Lissajous figures in some books may look different to those generated here. This is most probably in them the cosine function is used instead, i.e. V = Acos(2pft + f).