ESAW Wave Form Long Helix (SW-2184)Steel wire close-wound helix of about 19mm diameter and closed length of about 3m extending to approx. 9m. With looped ends. Useful for demonstrating wave motion.

ESAW Wave Form Slinky Helix (SW-2193)For demonstrating wave motion. Helical coil of flat section, tempered steel wire.SW-2193            Coil diameter 7.5cm, closed length 10cmSW-2193            Coil diameter 5cm, closed length 7.5cm   

ESAW Plastic Springy (SW-2202)This large multi-coloured plastic coil is an excellent fiddle toy and can successfully perform that most essential of function; it really can walk down stairs! The rainbow of colours along its length make it extremely pretty, whilst its generous size and great play v...

SW-1884 - ESAW Simple Form Resonance ApparatusFor measuring the resonant length of an air column driven by a tuning fork. Comprises a brass tube 292 x 27 mm diameter fixed to a base with a sliding inner tube 305 mm long which allows the length of the air column to be varied from 350 to 530 mm.

Sw-1893 - ESAW Tooth Tunes Kit The Hands-on kit that teaches the principles of sound induction/conduction. When students bite on the wooden rod, the frequencies of the attached audio signal, from radio, are then transmitted from their teeth to their ears. Includes activity material for five stude...

ESAW Resonance Jar (SW-2211)Made of glass, mounted on circular base. Size approx 30×7.5cm (height × diameter)

SW-1902 - ESAW Singing Rod When rubbed in a specific manner, this aluminum rod generates a loud, high-pitched sound. A perfect accessory to Kundt's Apparatus. Includes: rod, special resin and instructions

ESAW Bell In Vaccum (SW-2120)Demonstrates that sound waves need material medium for propagation and cannot travel through vacuum. For use on pump plates with diameter at least 15cm. it consists of an electric Bell operating on 4-6 volts AC/DC, suspended inside bell jar through a pair of thick met...

SW-2129 - ESAW Cup Loudspeaker Kit To illustrate how electric signals are converted into sound in loudspeakers. This kit can also be used to explain electromagnetism, the interaction of magnetic fields and the mechanical amplification of sound. With assembly and activity instructions.