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Bi-Concave Glass Lens, 38 mm Diameter, 200 mm Focal Length
Diverges incident light for optical experiments and beam control.
Bi-Concave Glass Lens, 50 mm Diameter, 150 mm Focal Length
Diverges incident light for optical experiments and beam control.
Bi-Concave Glass Lens, 50 mm Diameter, 200 mm Focal Length
Diverges incident light for optical experiments and beam control.
Bi-Concave Glass Lens, 50 mm Diameter, 300 mm Focal Length
Diverges incident light for optical experiments and beam control.
Bi-Concave Glass Lens, 75 mm Diameter, 200 mm Focal Length
Polished glass diverging optic with ground edges.
Fine Iron Filings, 8 Oz, 1/2 Pound, 227 grams
3D magnetic field experimentation with safe-keeping screw cap.
Glass Cylindrical Lenses Plano-Concave Power 14D (Focal Length ~72Mm)
Glass lenses to focus light in straight lines.
Glass Cylindrical Lenses Plano-Convex Power 14D (Focal Length ~72Mm)
Precision cylindrical lens for precise light focusing.
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