BlackHawk

First Post Alert! I was watching "The Pyramid Code" and there is a part where a man says if you can divide the stream of water coming from your sink into two streams you can take a led indicator light a put it between the streams and about every 20 seconds it will light up. He said it was a common at home physics experiment but i can find nothing on it. The only thing I have found slightly relating to this is an old forum which was no help. http://www.getbig.com/boards/index.php?topic=517324.0 I have tried to replicate this and have been unsuccessful. I was wondering if this experiment is documented anywhere else or if anyone has heard of it. Thank You.