Rectangular Block - Glass, Made from imported optical glass with optically worked surfaces, All angles accurately worked with edges slightly bevelled and glass free from bubbles, Size 100 x 60 x 18 mm
Acrylic Light Pipe, 24x1/2in - Clear, 2 feet of pipe coiled up at one end to demostrate light transmission end to end, transmits light like fiber optic cable, Weight (lb): 0.7, Length (in):9.0, Width (in):3.0, Height (in):4.0
Inverting Spectacles, With Two Fully Rotating Inverting Prisms In A Shielded Spectacle Frame, The Inverting Prisms Produce A Lateral Inversion Of The Rays-The World Thus Turns Upside Down, This Also Enables A Better Understanding Of The Visual Perception Of Babies.
Double Convex round Lens, Material: Glass, designed for physics and educational uses, Because of their educational use design, there may be minor imperfections that do not affect physical function, for educational uses, Size: 250mm focal length, 2in diameter and 4.5mm thick
Double Convex round Lens, Material: Glass, designed for physics and educational uses, Because of their educational use design, there may be minor imperfections that do not affect physical function, for educational uses, Size: 250mm focal length, 50mm diameter and 4mm thick
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