Product Description
Great for demonstrating difficult-to-explain resonant waves, such as propagation, reflection, and interface. Two cast metal supports, 39cm tall x 24cm deep, are extended by connector rods making a frame. A white cotton cloth backing is stretched between the frames to help make the demonstration visible. A 76mm diameter spring stretches between the frame ends that can be set up to 110cm apart. Spring steel rods with adjustable weights at each end provide the vibration that influences the wave frequency. Instructions provided.