Oxygen and Carbon Cycle Teaching Model Physics_Mechanics Regulated dual-output power supply showing

Regulated dual-output power supply showing independent LED readouts of voltage and current

Twelve premium rock specimens expand the introductory set with additional igneous

Four-socket E10 lamp holder pre-wired in series on a hard-plastic base with two 4mm banana terminals

Spring-loaded two-prong jaws self-adjust to apparatus up to 2

configurable for compound-pulley force-reduction experiments

Oxygen and Carbon Cycle Teaching Model Physics_Mechanics Regulated dual-output power supply showingTraces oxygen and carbon through atmosphere, biosphere, and geosphere on a labeled diagram, illustrating the biogeochemical cycles that link them.