The Spirograph applet is written using Java. You must have a Java enabled browser such as Netscape Navigator to be able to see this Spirograph applet.

What is a Spirograph?

A Spirograph is formed by rolling a circle inside or outside of another circle. The pen is placed at any point on the rolling circle. If the radius of fixed circle is R, the radius of moving circle is r, and the offset of the pen point in the moving circle is O, then the equation of the resulting curve is defined by:

	x = (R+r)*cos(t) - (r+O)*cos(((R+r)/r)*t)
	y = (R+r)*sin(t) - (r+O)*sin(((R+r)/r)*t)

How to use this applet?

Here is how you can use the controls in this Spirograph applet:

 Return to Game Room

Join the mailing list
to be notified of Museum
updates and additions
Enter your email address here
and click on submit button
Site Search