Rubber Hammer, Medium

Description :- On sturdy base, can be used in horizontal or vertical position. Prong size is 300 x 25 x 10 mm. Actuated by an electromagnet between the prongs, works with 6 V D.C. Amplitude of vibration can be varied by adjusting the position of the electromagnet.

Description :- For use with ripple tank, simple form. A disc of 250 mm diameter with 12 equispaced slots and a finger hole, rotating on its axis, with handle.

Description :- To study waves and to demonstrate compression, rarefaction, amplitude, wavelength, echoes, volume and pitch. Inexpensive model for creating longitudinal/compression waves by simply pushing a Slinky along a track. Includes instructions.

Description :- Consisting of 19 spheres, each mounted on a 75 mm long rod with a collar for attachment to a shaft. The spheres are mounted at 20° intervals, equally spaced along the shaft. The shaft rotates in two pillars mounted on a base.