Hollow Glass Prism with Stopper, 1.5 x 1.5" Physics_Alternative Energy Acrylic-handled proof plane with a

Acrylic-handled proof plane with a 96mm brass sampling disc

sized for a complete length-versus-strength comparison study using one consistent material

Simple-form Boyle's Law apparatus pairing a graduated plastic syringe on a wooden block with a weighted piston

passenger deactivation switches

the longer body bending and dispersing wider beams for refraction

Hollow Glass Prism with Stopper, 1.5 x 1.5" Physics_Alternative Energy Acrylic-handled proof plane with aPairs a 1. 5 by 1. 5 inch hollow glass prism with a stopper, students filling the cavity with water or other liquids to study Snell's law and refraction index variation by medium.