So this experiment is the Chladni plate experiment. I used a tone generator, a wave driver (speaker) and a metal plate attached to the speaker. First add sand to the plate then begin playing a tone. Certain frequencies vibrate the metal plate in such a way that it creates areas where there is no vibration. The sand "falls" into those areas, creating beautiful geometric patterns. As the frequency increases in pitch the patterns become more complex.
Those of us who don’t live in cozy winter wonderlands or with fancy fireplaces in our apartments have to do this same thing — only now with the benefit of Youtube. I’ve been to two holiday parties so far where someone had put on a “fireplace” video for holiday ambiance. At this last party, we all sat around and read the comments on these videos. They are so sincere and so hilarious. Here are some great fireplace videos for you to use this ChristmaHanuKwanzica — and the best comments on each.