Optically Worked Double Concave Glass Lens, 75mm Diameter, 200mm Focal Length Face Size_38mm Neoprene Bunsen burner hose sized

Neoprene Bunsen burner hose sized to fit 8-10 mm gas-inlet connectors

and math (STEM) curriculum to demonstrate STEM concepts and real-world applications through hands-on activities

equipping a class for fixed-and-movable pulley investigations

9-inch inner diameter with a 5

and packaged as a single optics kit

Optically Worked Double Concave Glass Lens, 75mm Diameter, 200mm Focal Length Face Size_38mm Neoprene Bunsen burner hose sizedPairs 75mm of aperture with a 200mm diverging focal length on a double concave glass lens, the gentler curvature softening divergence for clearer virtual image observation in refraction setups.