Double Convex round Lens, Material: Glass, designed for physics and educational uses, Because of their educational use design, there may be minor imperfections that do not affect physical function, for educational uses, Size: 200mm focal length, 2in diameter and 5.5mm thick
reflection and refraction demonstrator, 16cm diameter acrylic water tank has a 360 degree scale and a moveable arm carrying a laser activated by a push-button, Thumb screws on the side of the laser harness can be adjusted to finely position the laser beam
Educational Diffraction Slide, For Demonstrating The Principle Of The Diffraction Grating And The Way In Which Its Properties Are Dependent Upon The Number Of Lines Per Unit Length. Comprises A Card Mount 90 X 40 mm Approximately With Three 16 X 9 mm Apertures
Equilateral Prism, Material: glass, Useful for experiments in Optics, Light Refraction and Wavelengths, Will create a rainbow (in room light) by using the simple led light of a smart phone, User will need to create a small slit in black piece of paper and use, Size: 6in Hx1in W
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