Extra Dense Flint Glass Prism, R=1.65 Prong_3 Greatly enlarged inner ear model

Greatly enlarged inner ear model exposes bony and membranous labyrinth alongside a sectioned cochlea for vestibular and auditory anatomy teaching

letting students drive the lamp directly or send the slow AC output to a meter or oscilloscope

5V DC fan motor with a blue plastic blade on a 3

Fifty-pack of 3mm steel ball bearings

Class-visible 12-inch demonstration meter with magnetically damped moving coil and Perspex front-and-back panels

Extra Dense Flint Glass Prism, R=1.65 Prong_3 Greatly enlarged inner ear modelHeavy flint glass prism at refractive index 1. 65, the leaded body delivering pronounced spectral separation for comparing dispersion against crown and flint baselines.