Round Convex Glass Mirror, 75mm Diameter, 100mm Focal Length Prong_2 Articulated joints allow posing the

Articulated joints allow posing the 17

Tensioned steel rod in a heavy iron frame breaks a brittle iron cross-rod as cooling contraction pulls it taut

Demonstrates the full light-to-electricity-to-motion chain through a solar cell

Bobbin-wound transformer coil with 4mm panel sockets

well-formed real images for projection-style optics setups on a ~3mm-thick blank

Round Convex Glass Mirror, 75mm Diameter, 100mm Focal Length Prong_2 Articulated joints allow posing theWider aperture 75mm convex glass mirror at 100mm focal length, ~2. 8mm thick, the diverging curvature delivering reduced virtual images while the larger face brightens viewing.