Description

and ray-tracing demos

blue and the secondaries green

and a month-labeled base for tracking orbital positions through the year

matching the geometry of companion copper and iron rods for controlled thermal-conductivity comparisons

silvered back with protective coating

Double Concave Acrylic Lens, 86mm, 20cm Focal Length Glassware and ray-tracing demosAcrylic double concave lens at 86mm length and 20cm diverging focal length, the lightweight body producing virtual upright reduced images for safer per desk divergence demonstrations.

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Double Concave Acrylic Lens, 86mm, 20cm Focal Length Glassware and ray-tracing demos

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