Quote from pbanders: Sonic transducer in the center of the plate, as the frequency increases, you see different vibrational modes of the plate. The areas where the salt settles are the null areas, where vibration is at a minimum. The shapes depend on freqency of the sound and the geometery of the...

Have you heard of the DVD called "the Secret". Well it isn't such a secret anymore. The DVD was released in March 2006 and according to Time Magazine, the DVD has sold 500,000 units within the first 6 months. Today it sells well over 5,000 copies a day! It ranked in Amazon's Top-5 sellers...