Silk Cloth Square for Static Demonstrations, 12 x 12" Entomology & Zoology_Entomology Supplies Four-part plant cell model lifts

Four-part plant cell model lifts chloroplast

this enhanced optical bench set ships with a lamp housing and a matched complement of optical components

and electromagnet to map mechanical/electrical/light/heat conversions

Solid glass friction rod that develops a positive electrostatic charge when rubbed with silk or wool

Cast-metal base mounts a heavy-duty electromagnet-driven fork at ~80Hz

Silk Cloth Square for Static Demonstrations, 12 x 12" Entomology & Zoology_Entomology Supplies Four-part plant cell model liftsUsed to draw electrons from glass and ebonite rods during rubbing, this silk square gives friction rods a strong positive charge for triboelectric and electrostatic demonstrations.