Plastic Magdeburg Hemisphere with Valve, 4.25" Diameter Lab Equipment_Power Supplies Enlarged three-times life size with

Enlarged three-times life size with seven separable parts exposing cornea

this acrylic light guide traps an injected ray-box beam by total internal reflection

supplying a soldering-free unit for student-built optoelectronic and light-detection circuits

the compact cross-section model maps pituitary

Three-part electricity kit with cell holders

Plastic Magdeburg Hemisphere with Valve, 4.25" Diameter Lab Equipment_Power Supplies Enlarged three-times life size withPlastic 4. 25 inch Magdeburg hemispheres with molded handles, an O ring seal, and a release valve, demonstrating atmospheric pressure through evacuated twin hemisphere separation work.