Grades 5-12.
Study how color affects the rate of absorbing and radiating energy. Includes black and silver or white metal cans with one-hole cap for inserting a thermometer. Comes with instructions. Thermometer and heat source not in..

Explore how lenses change the direction of light through the process of refraction and can produce images. Using both convex and concave lenses, students compare magnification, measure focal length, and figure out how to construct a simple camera. Inclu..

This clear acrylic refraction cell is excellent for showing refraction and internal reflection in water, and to measure its refractive index. The cell has a uniform wall thickness to eliminate distortions. Grade 7 and up.

This clear acrylic refraction cell is excellent for showing refraction and internal reflection in water, and to measure its refractive index. The cell has a uniform wall thickness to eliminate distortions. Grade 7 and up.

These clear acrylic refraction cells are excellent for showing refraction and internal reflection in water, and to measure its refractive index. The cells have uniform wall thickness to eliminate distortions. Includes one Semicircular Refraction Cell (S..