Electrical Whirl, 95mm 3-Point Star Subcategory_Centrifuges Optically-worked glass double convex lens

Optically-worked glass double convex lens with a 150mm focal length and 1

conservation of energy

where colored liquid in a U-shaped section shifts measurably as air blown through a constricted glass tube creates pressure differences

securing a thermometer to any support rod at the angle needed for hands-free temperature monitoring during an experiment

Cast-metal base mounts a heavy-duty electromagnet-driven fork at ~80Hz

Electrical Whirl, 95mm 3-Point Star Subcategory_Centrifuges Optically-worked glass double convex lensPointed three arm metal star on a 4mm socket pivot, set in motion by ion wind from corona discharge whenever the apparatus is connected to a high voltage source.