Mr. Science Science Facility / fashion small sand pendulum - Black

Lisa put the US in the sand draw a line full of Zen painting, it is not very attractive - In the museum one can see traces of sand pendulum, careful observation, from different angles of sand pendulum swing will draw different graphs, which called Lissajous curves. Definitely a very elegant home decorations, enjoy his swing rotation to draw complex graphics and law, so that the soul can calm down. 39 cm mini-size plastic made using fine white quartz sand, can draw a perfect intricate graphics, shorter swing hanging, swinging the more light frequencies. Sand pendulum motion by a simple harmonic motion in two orthogonal composition, when the two do not coincide with the swing plane, swing sand law will draw a variety of patterns ~! This product group legislature simple, if not a long time is also very good housing Oh! Included pendulum hanging sleeves do not throw it away, when you want to heal the sand, the sand can be first into a mound on the sleeve cover swing back down, swinging pendulum hanging to achieve the effect of smoothing sand to form a homogeneous micro concave arc. • simple harmonic motion and Lissajous curve Sand pendulum motion by two orthogonal harmonic oscillation components. Swing rope node position determining two orthogonal harmonic oscillation frequency ratio, the release point of the pendulum's decision two orthogonal simple harmonic motion of the initial phase and amplitude. Track two mutually perpendicular harmonic motion synthesis shock if it is a stable closed curve, this curve is called Lissajous curve Lissajous curve used primarily for the detection of frequency and phase. Origin / manufacturing methods Origin China