How does the small arrow on your computer monitor work when we move the mouse? Haven’t you ever wondered?
Now, through the miracle of high technology, we can see how it is done.
With the aid of a screen magnifying lens, the mechanism becomes apparent.
Click on the link below and you will find out. The image may take a minute or two to download and when it appears, slowly move your mouse over the light gray circle and you will see how the magic works.