As a lover of science, I often wonder about how things work. So I was
intrigued when I received this e-mail.
How does the small arrow in the screen of the computer work when we
move the mouse?
Haven't you ever wondered how it works?
Now, through the miracle of the high technology, we can see how it is
done.
With the aid of a screen magnifying lens the mechanism becomes
apparent:
Here it is..
http://www.1-click.jp/