A flat-section steel wire helical coil, suitable for use in the study of sound and wave propagation in the physics lab - or simply for having fun at home with a classic spring toy. * A scientist's version of the classic toy (with a higher spring constant) * Can be used as a scientific instrument to measure a wave function and for demonstrating a variety of physics concepts * Send it down a set of stairs for an exciting display * Stretches up to 3m in length * Ideal for demonstrating a variety of physics topics including potential and kinetic energy, Hooke's Law, energy of motion and more * Coil diameter 75mm * Length when closed: 100mm * Eisco type PH0708A https://elecena.pl/product/27243818/eisco-wave-form-helix-slinky-coil-diameter-7-5-cm-length-closed-10cm 2024-11-12 https://elecena.pl/product/27243818/eisco-wave-form-helix-slinky-coil-diameter-7-5-cm-length-closed-10cm 2025-08-11 https://elecena.pl/product/27243818/eisco-wave-form-helix-slinky-coil-diameter-7-5-cm-length-closed-10cm 2026-05-07 https://elecena.pl/product/27243818/eisco-wave-form-helix-slinky-coil-diameter-7-5-cm-length-closed-10cm 2026-07-13