Wooden Friction Board Apparatus Lab Supplies_Classroom sized for visible-time-scale RC charging

sized for visible-time-scale RC charging and capacitor-driven momentary lamp-flash experiments

a pulley-loaded weighted string

5mA moving-coil galvanometer at plus-or-minus 2

producing distinct audible pitches at varying spin speeds to relate rotational frequency to perceived sound frequency

configured to contrast eddy-current damping in continuous versus interrupted conductors

Wooden Friction Board Apparatus Lab Supplies_Classroom sized for visible-time-scale RC chargingWood based friction board apparatus with a 19 inch metal surface plus two hooked friction sliders with different top materials for comparative sliding friction investigations.