US$ 30.99
this decade box selects cascaded values for RC-time-constant
illustrating molecular symmetry and bonding geometry
5-inch hollow glass prism with a stopper
displayed on a plastic-and-metal rack with a carrying handle for transport
Double Concave Glass Lens, 50mm Diameter, 250mm Focal Length, 3mm Thick Material_Wood this decade box selects cascadedSlim 3mm thick double concave glass lens at 50mm diameter and 250mm focal length, the diverging curvature paired with low mass for ray box mounts and lightweight optics setups.