Ring Thrower with 2 Aluminum Rings for Eddy Current Study Subcategory_Globes Length-adjustable wooden pendulum simple-machine model

Length-adjustable wooden pendulum simple-machine model with a blue bob sliding along the string and a wooden guide keeping the swing on a consistent path for period-vs-length measurements

and color-mixing activities

Used to keep the slide-wire wiper out of student reach during high-voltage work

Straight screw-thread connector in borosilicate glass features thread size 13 for connecting glass tubing and apparatus components

and bladder

Ring Thrower with 2 Aluminum Rings for Eddy Current Study Subcategory_Globes Length-adjustable wooden pendulum simple-machine modelDemonstrates Lenz's law and induced eddy currents by launching a solid aluminum ring upward from an energized electromagnet while a slit ring stays put on the coil.