"Janitorial Supplies"

Long, pure sounding aluminum tuning forks.

Small electrolysis apparatus with beaker included.

Simple tool to explore the thermal properties of matter.

Demonstrate refraction and internal reflection.

Quality ceramic resistors, perfect for physics experiments.

Frosted acrylic lenses for optical experiments.

Quality resistors for electrical experiments.

Snap on battery connectors for your electronics projects.

Compact electric storage for circuits.

Control the current direction in circuits.

Small temperature difference create motion in this unique engine.

Both versions of these economy tuning fork sets come with a mallet designed for one hard and one soft end for use with all frequencies of forks.

Equilateral prisms, made from high quality clear acrylic sheet.

This excellent quality electrostatic generator consists of a charge generation system, an aluminum collector sphere, and an electric motor drive on a sturdy base.

Whiteboard Color Optics are a complete system for investigating color, reflection, and refraction.

Unique LED that works with any direction of current.