Ray Optics Box (NBO) white and pink

white and pink

•  Â A set of 296 picture flashcards

This apparatus enables values of V to be found for various frequencies of light selected by placing each of the colour filters in turn over the cell

Designed for repeated classroom use

Soft enough to use indoors or outdoors to encourage physical development

Ray Optics Box (NBO) white and pinkA ventilated Ray Optics box open fronted with extended sides finned externally for heat dissipation and vertical internal grooves to accommodate a slit plate and cylindrical lens. It includes a 12 volt, 21 watts lamp with one meter of twin flex ending in 4mm connectors, a single and triple slit, whitened on one side, black matt on the other. Operates on 12 volts power supply which is not included. 45mm width: not suitable for use with 50mm filters.