Brass Ring and Ball for Thermal Expansion Demonstration Lab Supplies_Clips Pairs 75 by 50mm with

Pairs 75 by 50mm with 18mm thickness on an acrylic rectangular refraction block

the gentler curvature softening divergence while still producing reduced virtual reflections

a transparent cover

the f/4 curvature stretching the focal throw for projection-style image formation and reflector telescope analogues

measuring the upward force on submerged objects in fluid-mechanics investigations

Brass Ring and Ball for Thermal Expansion Demonstration Lab Supplies_Clips Pairs 75 by 50mm withBuilt for the classic thermal expansion demonstration, this brass ball and ring fit freely at room temperature and stick tight once the ball is heated and expanded.