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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

Bruce Yeany

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48 thoughts on “Sand pendulums – Lissajous patterns – part one // Homemade Science with Bruce Yeany
  1. The only math we have at my middle school is the stuff they've been reepeating for three years yet every idiot in my class seems to somehow forget it every year.

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