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Circilis on Instagram: "A simple pendulum makes mesmerizing patterns on sand under the constant pull of gravitational force. These intricate designs, called Lissajous figures, are created as the pendulum swings in two perpendicular directions simultaneously. The ever-changing friction and gradual shortening of the swing, which demonstrates mathematical knowledge, ensure that no two patterns are ever the same. This beautiful experiment shows the harmony between chaos and cosmic order. Did you kno