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United Scientific™ Friction Cubes
Demonstrate how the frictional force on an object depends on the surface, not mass.
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Spring Wave Demonstration
Students create and observe waves and their properties.
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PolarPack® Therapeutic Gel Packs, Flexible Gel Ice Packs, Sonoco ThermoSafe
Cold and warm pack therapy used by physical therapists, hospitals, and physicians as a therapeutic compress to treat areas of pain and inflammation.
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High Voltage Power Supply 5000 V
Universally applicable, floating, high-voltage power supply with built-in, high voltage resistant transformer to supply the heater voltage for electron tubes. Continuously adjustable high voltage, safe to touch, with passive current limitation and analog voltage display. Unit poles can be connected to protected earth, but it is not center tapped.
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Free Charge Carriers in a Vacuum – Thomson Tube
Investigate the deflection of electrons.
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Differential and Sympathetic Tuning Forks
These large alloy tuning forks are designed to demonstrate resonance, beat frequency, and sympathetic vibration.
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High RPM Steam Engine
The High rpm Steam Engine features an electrically-heated horizontal boiler.
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Electricity – Propagation of Decimeter Waves Along Lines
Determine and investigate the current and voltage on a Lecher line.
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Boomwhackers Tuned Percussion Tubes
Boomwackers are brighly colored plastic tubes tuned by length to musical notes.
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Energy Transformation Kit
Appropriate for grades 6 to 12 Brings the First Law of Thermodynamics to life! This pair of precision-machined, chrome-plated steel balls is actually a hands-on demonstration in energy transformation. By striking the balls together, you will create enough heat at the point of contact to burn a hole in a sheet of paper.
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Eisco® Miniature Lamp Bulbs
Flash lamp bulbs perfect for simple circuit activities.
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Demo Relay Switch
Ideal tool for studying and observing the basic concepts of a relay.

