US$ 28.00
Description
Tirrill burner on a stable octagonal base adds air
Used to introduce photoconductivity and light-controlled circuits
Eccentricity-of-center-of-gravity apparatus with a ductile parallelepiped and central plumb line
Used to demonstrate temperature-dependent resistance
6-Piece Optical Lens Set, 1.5", Double Convex and Double Concave Entomology & Zoology_Entomology Supplies Tirrill burner on a stableSix piece 1. 5 inch optical lens set with three double convex and three double concave lenses at 200mm, 300mm, and 500mm focal lengths for comparing converging and diverging behaviors.
Exchange/Return Notes
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