The Earth/sun system demonstrates the seasons, eclipses, and the phases of the moon. The sun has a LED that sends a spot of light onto the Earth. The sun turns with the handle as the user changes the seasons. The moon revolves around the Earth as the Earth rotates around on its axis. The angle of…

This sturdy electroscope features a metal case with front and rear glass windows for preventing air currents from affecting the deflection of the leaves. Leaves are gold and aluminum. Leaf support rod is held in place by an insulating plastic sleeve. A graduated scale is also provided for measuring…

Operating on 1.5 to 6 V DC, this electromagnet lifts up to 3.5kg. A current direction indicator is included for the study of the magnetic field.

Set of five color filters (2.5" x 2.5" x 1/8") made of acrylic. Includes one each of the following colors: red, orange, yellow, blue and green.

Tripod magnifier, 10x magnification. Available in Plastic or Brass with Glass lenses.

2"; long, plain, chrome plated alligator clips with excellent conductivity. 2"; long, with insulated sleeve, chrome plated alligator clips with excellent conductivity. Pack of 10, five each red and black.

Made from Acrylic about 3mm thick, with highly silvered back.

This molded plastic bicycle wheel gyroscope is durably constructed and more resistant to distortion than a spoked wheel. Convincing demonstrations of the gyroscopic forces can be made using a rotating platform and the grooved hub and starting cord make accelerating the gyroscope to a sufficient…

Sturdy economical scale for general use in the lab. It features a round plastic weighing platform. Capacity is 5 kg, or 11 lbs.

Tuning Fork Sets now come in a wooden box with foam lining. Each tuning fork has a specific place in the foam lining die-cut for easy storage. Each set also contains a mallet specially designed with one hard and one-soft end, for use with all frequencies of forks. Boxed set of 8, with mallet, in…

An oversized set of 6 lenses and prisms designed for mounting on a magnetic chalk or marker board. Lenses are about 8" long, so your optics experiments would be clearly visible from every part of the classroom. Each piece in the set has a pre-attached magnetic backing. Set contains 1 each of…

Made from Plate Glass, with carefully ground and polished optical survaces, and cleanly ground edges, these lenses feature a diameter of 38mm - 125mm and focal lengths from 50mm - 500mm.

The set contains 6 glass lenses: one each of double convex, plano-convex, concavo-convex, double concave, plano-concave, and convexo-concave. Includes a reusable cardboard storage box.

This comprehensive kit allows students to plot equipotential lines in an electric field between two electrodes held at different electric potentials. A simple setup keeps electrodes partially immersed in water containing an electrolyte, allowing a small current to flow between the…

Equilateral prisms, made from high quality clear acrylic sheet with highly polished surfaces.

These weights feature flat countersunk bottoms, with a double-ended hooked rod through the middle. They can be used on balance pans, as well as hooked in tandem for lever arm studies. Set of 9 weights consisting of 1 each 10g, 50g, 500g, 1000g, and 2 each 20g, 200gram weights. Weights are made of…

The Ultrasonic Grating Apparatus is both a unique demonstration of the interaction of longitudinal sound waves and transverse light waves and also a method for the precise determination of the speed of sound in liquids, which is otherwise difficult to do in the undergraduate lab. The core of the…

For use with slotted weights. Available in aluminum or brass. Each weighs 50g. Stem length is 16 CM for aluminum hanger, 11.5 CM for brass hanger.

Fresnel Lens with vinyl sleeve is 3 3/8" wide x 2 1/4" tall.The magnifying window is 3 1/8" wide and 1 3/4" tall and has a magnification of 1.25x.

A comprehensive set of mechanical vibration and wave motion apparatus based on a sturdy, reliable vibration generator that can be used with any frequency generator that can deliver a signal of up to 1A. The piston delivers an amplitude of up to 7 mm, depending on the load and frequency. The…

This magnifier offers an extra large field of view, hands free use, and folds down to a compact size for storage. Its 10cm lens provides 6x magnification. Ideal for use on a lab table, and for dissecting small specimens like owl pellets.

Economical stainless steel Vernier calipers with 125mm/5 inch capacity. Features inside and outside jaws, full length depth gauge, friction ruler and sliding lock for gauging. Graduated in millimeters and 1/16".

Constructed of anodized aluminum, with steel hooks, this spring scale is extremely durable. Available in seven color-coded sizes.

This precision measuring tool is made of hardened steel for precision and durability. It has a range of 150 MM and a large, easy-to-read dial with a resolution of 0.02 MM. A storage case and instructions are included. Shipping weight: 6.5 Oz. dimensions: 9" x 0.75" x 0.25".

Understanding pendulum motion is fundamental to the study of vibrations and waves. This unique United Science Supplies kit includes everything necessary for a full exploration of the basic features of pendulum motion in a complete but economical set. The individual components are of proven design -…

This economical seven piece kit lets you demonstrate the conversion between different forms of energy. It includes four devices for generating electrical energy from mechanical motion (hand generator), chemical energy (batteries), light (solar energy), and wind (windmill) and three devices for…

This ingenious device offers a practical and economical solution for light measurements in a variety of learning situations. Whether measuring environmental light or quantifying an optical experiment, this compact luxmeter meets the need. For most uses, the autoranging feature makes this a…

This versatile spring scale can be used to measure forces using push or pull functions, or to weigh a suspended object from the large hook. Includes a zero adjustment screw and a metal suspension ring. Available in six color-coded sizes.

Discover how people communicated over long distances before the telephone was invented. The Morse code experiment kit is designed to show the principle of a telegraph. The kit consists of a "D" cell battery holder, a telegraph key, a miniature lamp with holder, and three connector cords.…

This kit is designed for high school students to learn the principles and applications of electromagnets. It includes two coils on plastic spools, a U shape iron core, a straight iron core, two magnetic compasses with stands, and a pair of wires. Students can build a bar-shaped and a U -shaped…

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.

This 25 foot / 7.5 meter metal blade tape measure is 1" wide and is scaled in 1/16" increments on one side and 1mm increments on the other side. Features an easy to read lockable, retractable yellow blade and high-impact ABS case.