Collapsible Metal Can Demonstration Kit with Vacuum Pump Activity Kits_Physics Lightweight equilateral acrylic refraction prism

Lightweight equilateral acrylic refraction prism with polished triangular faces

Bare 14 SWG copper wire on a 500g reel approximating 50 feet

and larynx model shows the full upper respiratory-cardiac anatomy in anatomical position for teaching pulmonary and cardiovascular systems

Diatom model displays the silica frustule architecture and intricate valve patterning characteristic of these unicellular algae for aquatic biology teaching

Collapsible Metal Can Demonstration Kit with Vacuum Pump Activity Kits_Physics Lightweight equilateral acrylic refraction prismFull collapsible can kit with a metal can, handheld vacuum pump, stopper, and hose fitting, demonstrating atmospheric pressure as the can implodes under evacuation.