Spare Bulb for Ray Box, 12V 21W Subject_Biology Thirty-part life-size muscular torso separates

Thirty-part life-size muscular torso separates to expose superficial and deep musculature alongside dual-sex reproductive organs for comprehensive anatomy teaching

Built for Mesozoic paleontology teaching

letting students compare force ratios across four different radii in a single assembly

exposing the rotating coil and field magnet for direct observation as students supply 4-9V to drive the rotation

tectonic stress

Spare Bulb for Ray Box, 12V 21W Subject_Biology Thirty-part life-size muscular torso separatesBright filament bulb rated 12V 21W, dimensioned to fit the PH0600A ray box housing as a drop in replacement for the original lamp.