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mpn: 611-2225,

Demonstrate the operation of a force pump. As the plunger is pulled up, it causes water to fill in the larger cylindrical chamber. As the plunger is pushed down, the water returns to the reservoir. Color will vary....

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mpn: 635-1411,

In packs of 100 each. Handle and store adult insects. The bugs won't stick to the glassine material from which these envelopes are made....

mpn: 611-1860,

Suspend three pendulums at once and adjust each individually with this welded steel pendulum clamp. Connects to any 13 mm to 19 mm diameter support rod and is 27 cm in length. Includes individual cord clamps....

mpn: 612-0050,

Compare heat absorption and radiation. Includes: two pans (90mm diameter), one dark, one silver. One 10W / 12V lamp mounted between the pans shows different temperature increases. With binding posts and instructions on the base. You need two thermome...

mpn: 611-1855,

This high-quality apparatus easily demonstrates the transformation of potential energy to kinetic energy. Use the built-in ruler to measure the distance (in centimeters) the ball has dropped from its starting point at the top. We feature a two-sided ...

mpn: 611-1280,

What happens to the oceans under the full moon? What flings you outward when your car cuts a corner too sharply? It's easy to visualize the effects of inertial movements with this device. Horizontal acceleration creates characteristic wave patterns a...

mpn: 615-4730,

Explore the principle of capacitance with our economical unit. Simply charge the plates with a dielectric placed in between. Can be used to show that the charge is contained on the dielectric and not the metal plates. Includes 2 formed aluminum plate...

mpn: 612-1331,

Determine electrical equivalent of heat by passing a known current through a known resistance for a known time and measuring the resulting temperature change. Intended for use with our 612-1330 due to its low heat loss. Includes: power resistor mount...

mpn: 615-4090,

Our fixed resistance set allows you to set resistance to 5, 10, 20, 50, 100 or 200 ohms. Accuracy to 1%....

mpn: 611-2065,

These 25 mm cubes includes hooks on one face for easy transport in and out of cylinders and beakers. Includes 1 each of aluminum, brass, plated steel, and zinc. With instructions....

mpn: 611-2330,

These student-friendly rubber cups can be placed together and squeezed to force out the air inside. They then prove surprisingly hard to pull apart. Includes two rubber cups, 7.5 cm in diameter and attached plastic handle....

mpn: 10-060,

The Science First 10-060 Van de Graaff generator produces 200kV potential in relative humidity up to 90 percent and demonstrates electronic fields and ion exchange for physical science classroom use. It arcs to 5" with the optional discharge wand (so...

mpn: 611-1320,

Because these large, high impact resistant carts have accurately aligned axles, they yield superior data for all quantitative kinematics experiments. With a low profile and three widely spaced wheels for stability, each features a Velcro attachment f...

mpn: 615-4555,

Grades 5 up. This patented kit, developed by a teacher, has been acclaimed by instructors of technology, middle school science and physics as the best they have ever seen. Our innovative magnetic connection system allows you to build circuits quickly...

mpn: 40-310,

Science first moment of inertia kit is explore the concept of moment of inertia with wands and rings of equal mass but different distribution of mass. One set has an even distributions of mass, the other a movable mass. Includes two wands of equal le...

mpn: 614-0122,

Observe and measure optical phenomena quickly and effectively with this 1 m long illuminated optical bench. Optical components can slide freely along the length of the extruded aluminum rail, or can be fixed at any point. Includes: 1 meter extruded r...

mpn: 611-2002,

Use this set to determine the specific gravity of a material by graphical methods. • The set consists of four (4) samples of each of eight different materials, arranged in a binary weighting sequence, with each weight double its predecessor (1/8, 1...