"water bath"

Project a straight line for mirrors and lenses.

This is an excellent and economical set for introductory ray optics.

Laser diode of protection classification II with 1 m connector lead and barrel connector for connecting ultrasonic cw generator.

This laser ray box has several modes, with 1, 3, or 5 beams.

This laser ray box uses cylindrical LED lenses to focus the beam.

Delivers outstanding demonstrations of over 70 phenomena in geometric and physical optics.

Perform many different lessons around reflection, refraction, diffraction, and interference.

This kit uses a compact yet powerful laser ray box, which has bright and well-defined rays perfect for classroom use.

This set has been designed for simple and clear demonstration of the principles of geometrical optics - transmission, reflection and refraction.

An advanced laser ray box that clearly demonstrates the optical axis.