Round Convex Glass Mirror, 75mm Diameter, 100mm Focal Length Prong_2 Meker-style natural gas burner delivers

Meker-style natural gas burner delivers a broad

Double-concave glass lens at 50mm diameter and 100mm focal length

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

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

this insulated wire pairs a 2mm plug with a crocodile clip to keep polarity color-coded in small-scale circuit work

Round Convex Glass Mirror, 75mm Diameter, 100mm Focal Length Prong_2 Meker-style natural gas burner deliversWider 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.