Air-Cooled Rheostat, Model C Glass Bottles_Reagent Bottles and specific-heat comparisons

and specific-heat comparisons

Large-scale typical flower model with removable floral parts and a bisected ovary showing internal ovule arrangement for detailed botany instruction

and a second copper) for side-by-side comparison of conductivity and resistance

One-inch brass ball that threads onto a pendulum string as a heavier metal counterpart to aluminum or steel balls in mass-dependent periodic-motion investigations

one fitted with an exploder piston for impulse experiments

Air-Cooled Rheostat, Model C Glass Bottles_Reagent Bottles and specific-heat comparisonsAir cooled rheostat with extended tube ventilation, dissipating heat across the slide bar carriage during sustained high current circuit work in physics laboratory demonstrations.