3D Life History of Angiosperms Model, 24 x 18 x 2" Glassware_Glass Sets & Apparatus this silicon diode mounts on

this silicon diode mounts on a transparent base with 4mm color-coded sockets and a printed circuit diagram for hands-on forward-bias demonstrations

Zinc alloy natural gas Bunsen burner with flame stabilizer ships with a 2-foot neoprene gas hose for quick bench hookup in chemistry classrooms

disc commutator

Five-centimeter brass sphere mounted on an ebonite-insulated metal base

Selenium photovoltaic cell on a 4 by 3 by 1

3D Life History of Angiosperms Model, 24 x 18 x 2" Glassware_Glass Sets & Apparatus this silicon diode mounts onMagnified angiosperm life cycle model traces pollination, fertilization, seed development, and germination through a complete hand painted sequence on a mounted base.