Human Head Model, Frontal and Median Section Light & Optics_Spectroscopy its sectioned carburetor and fuel

its sectioned carburetor and fuel supply exposing the compression-ignition cycle to a hand-cranked turnover

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

sized for finer-gauge resistance demonstrations and small-scale heating elements where the heavier gauges would over-deliver current

providing a quick swap-in reference for general-purpose AC-circuit and timing-experiment work

and workshop tasks

Human Head Model, Frontal and Median Section Light & Optics_Spectroscopy its sectioned carburetor and fuelFrontal and median head sections expose brain, cranial sinuses, oral cavity, and cervical spine across the same model for comprehensive head anatomy teaching.