8-Piece Premium Brass Slotted Mass Set StockedLY9121 111110 megohms across seven cascaded

111110 megohms across seven cascaded decades

Greatly magnified HIV virion model separates into two parts exposing the outer envelope and interior capsid with RNA

Proves horizontal velocity does not affect vertical fall time through a push-button launcher that simultaneously projects one steel ball and releases another

letting students read both small-cell and battery-stack voltages on a single instrument

and holders for wiring basic

8-Piece Premium Brass Slotted Mass Set StockedLY9121 111110 megohms across seven cascadedBrass eight piece slotted mass set totaling 1100 grams from 10 to 500 gram pieces, secured on a plastic ended metal rack with a carrying handle for physics force and acceleration experiments.