Sand pendulums – Lissajous patterns – part one // Homemade Science with Bruce Yeany



Sand pendulums are an easy and beautiful method for students of all ages to learn a bit about the harmonic motion. These devices are easy to build and can be adjusted to give a variety of patterns. A pendulum that begins with two point of support can alter the periods of the pendulum as it moves on two perpendicular axis at the same time. The video gives simple instructions on the materials needed and how to adjust the configuration to vary the design.

Note on comments: I appreciate seeing comments positive or negative, and learn from helpful criticism. However, I am a middle school teacher and many of my students visit this site, I will remove comments that I feel are offensive or inappropriate.

Opening Music: Runaways by Silent Partner

30 thoughts on “Sand pendulums – Lissajous patterns – part one // Homemade Science with Bruce Yeany

  1. Dear brothers and sisters in the comment section,

    This note is to inform you all that this isn't a Biology based video where you claim stuffs as a "Watermelon" or a "Bird" rather It's pure physics. Hope you all understand my attempt to correct you. Have a good day!

    Your's sincerely
    A Random guy

  2. Why buy the sand from a hardware store if you can go to the beach and get all you want to for free. ( I KNOW , I know , it's a bad joke ). 😜😜

  3. Im amazed at shapes/designs/created through natural means like gravity, momentum, sound, the roots of plants searching for water , crystals growing, snowflakes falling through the air to form a mathatical geometric beautiful shape, or even the patterns groups of trees form in a forest, natural fractals etc….thanks for the video👍

  4. "LOOKS LIKE A WATERMELON!" "That's a watermelon" "now its a watermelon" "it's a watermelon" "yeah thats a watermelon" "looks like a watermelon" "holy shit it is a watermelon" "wow a watermelon!" "Thats a watermelon" "But I think it looks like a watermelon" "its making a watermelon"
    Never seen so much critical thinking in one place.

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