Premium Terrestrial Globe, 30cm Geology the gentler curvature softening divergence

the gentler curvature softening divergence while still producing reduced virtual reflections

Designed for liquid-fill Snell's-law work at smaller scale

Copper-and-constantan Type T thermocouple generating a measurable electrical potential at the junction

This round convex glass mirror is designed for physics and educational uses

Enlarged three-times life size with seven separable parts exposing cornea

Premium Terrestrial Globe, 30cm Geology the gentler curvature softening divergenceThirty centimeter terrestrial globe mounted on a graduated meridian arc with accurate modern political boundaries, durable enough for repeated classroom handling.