Standard Ray Box for Optics Gifts_Bar Hand-painted 4-part human brain model

Hand-painted 4-part human brain model separates into cortical hemispheres and brain-stem regions for lobed-anatomy teaching at introductory biology levels

shoot emergence

Proves horizontal velocity does not affect vertical fall time through a push-button launcher that simultaneously projects one steel ball and releases another

Twenty-centimeter steel helical spring paired with 2kg

Used to compare magnet strengths across the bar-magnet series

Standard Ray Box for Optics Gifts_Bar Hand-painted 4-part human brain modelDesigned to project narrow beams through interchangeable slit plates, this ray box gives students a controllable light source for reflection, refraction, and ray tracing demos.