Optically Worked Double Concave Glass Lens, 50mm Diameter Focal Length:150mm Two-prong double-adjustable universal clamp with

Two-prong double-adjustable universal clamp with an integral boss head and vinyl-coated rubber jaws

Cupric Acetate

Teclu burner runs on liquid propane with needle valve flame adjustment to produce a high-temperature

Hexagonal hollow stopper in heavy-duty borosilicate glass features 14/23 cone with flat end for sealing ground joint vessels and apparatus

and procedure documentation

Optically Worked Double Concave Glass Lens, 50mm Diameter Focal Length:150mm Two-prong double-adjustable universal clamp withSpherical optically worked glass lens with ground edges demonstrates how diverging lenses always produce smaller virtual upright images for ray tracing exercises.