O-Ring Belt Replacement for Van de Graaff Generator, Single Subject_Astronomy Built to demonstrate the diverging-lens

Built to demonstrate the diverging-lens eyepiece pioneered by Galileo

Glass prism with a 15-degree apex and 15° x 15° x 150° angles

5 mL in a two-tier stackable frame

Pack of 100 tamper-evident cash deposit bags measures 10 x 14 inches with two pockets

Paintable and stainable wooden hockey stick supports DIY finishing for display

O-Ring Belt Replacement for Van de Graaff Generator, Single Subject_Astronomy Built to demonstrate the diverging-lensReplacement Van de Graaff O ring belt sized for the PH0918A and PH0919A generators, the consumable wear part that transfers charge between the drive wheel and the high voltage dome.