Playing with batteries on an iPad

Fun! Throw some batteries on your iPad and see what happens. Things I found out:

• The batteries would all transmit the touch from my finger to the screen, even if I touched through the plastic coating.
• Balancing the D up on its positive terminal had the best effect. Most of the time it would just keep going forever until I moved it, though sometimes it would stop on its own, as you can see in the video.
• AA batteries didn’t do anything when I balanced them on either terminal, but they DID register a touch when I laid them down.  Not in all areas of the screen, though.  It seemed that both their position on the screen and the angle they were laid at both affected whether or not it it would register.
• The button cell didn’t do much of anything.

I absolutely didn’t have the conejos to try out a 9V, I figured that would be the fastest way to short it out, though who knows.  Give it a shot and let me know what happens.