Round Convex Glass Mirror, 75mm Diameter, 75mm Focal Length Subcategory_Gas Generation and wire gauze over Bunsen

and wire gauze over Bunsen burners in chemistry labs

Sixty-five-piece molecular model set with 32 atoms and 33 bonds for demonstrating bonding angles

Five-ohm reference coil non-inductively wound from double silk-covered constantan inside a transparent tube

Rounds out a comparative thermal-conductivity set with zinc at a moderate conductivity value

a 12V-powered lamp

Round Convex Glass Mirror, 75mm Diameter, 75mm Focal Length Subcategory_Gas Generation and wire gauze over BunsenDesigned for divergence demos at scale, a 75mm aperture convex glass mirror at 75mm focal length and ~2. 8mm thickness produces reduced virtual images with a notably widened apparent field.