Closed Retort Ring with Stem, 3" ID, Plated Mild Steel Grade_Food Grade allowing waveforms to be plotted

allowing waveforms to be plotted on an oscilloscope or fed into a frequency analyzer

dramatizing Coulomb repulsion and charge distribution on conductors

sized for stringing through small pulley systems or hanging pendulum bobs across multiple demonstration setups

this silk square gives friction rods a strong positive charge for triboelectric and electrostatic demonstrations

Larger right-angled glass refraction prism at 80 by 115mm

Closed Retort Ring with Stem, 3" ID, Plated Mild Steel Grade_Food Grade allowing waveforms to be plottedThree inch inner diameter supports beakers and funnels on this plated mild steel closed retort ring, fitted with a 5. 5 inch stem for mounting on a standard retort stand.