Swivel Clamp Holder for 21mm Rods, Adjustable Tilt Light & Optics_Reflection & Refraction with plus-or-minus 10% resistance tolerance

with plus-or-minus 10% resistance tolerance

the f/4 curvature stretching the focal throw for projection-style image formation and reflector telescope analogues

5V tungsten-filament flash-lamp bulbs with E10 MES screw bases

Reproduces Ewald von Kleist's 1745 charge-storage device with concentric metal cups around a plastic dielectric

75-inch post for attachment to standard rod-and-clamp stands

Swivel Clamp Holder for 21mm Rods, Adjustable Tilt Light & Optics_Reflection & Refraction with plus-or-minus 10% resistance toleranceJumbo die cast swivel clamp holder accepting rods up to 21 mm, tilting clamps at any angle on retort stands during classroom demonstrations and benchtop work.