Hollow Acrylic Semi-Circle for Refraction Index Study, 3 x 1.5 x 1.75" Health & Genetics_Equipment & Supplies the medium-strength option for classroom

the medium-strength option for classroom investigations into magnetic poles and field-line geometry

providing the longer-reach branched-wiring counterpart to the 300mm version

Single-channel aluminum 1

Extending up to 65 feet from a 20cm closed height on the included wooden stand

Three-part medical-quality human skull model with a removable calvarium and articulated mandible

Hollow Acrylic Semi-Circle for Refraction Index Study, 3 x 1.5 x 1.75" Health & Genetics_Equipment & Supplies the medium-strength option for classroomAcrylic semi circular block measuring 3 x 1. 5 x 1. 75 inches with a center indicator line, used to study Snell's law, total internal reflection, and critical angle behavior.