Doppler Effect Demonstration Apparatus, 92dB buzzer, 0.8m tether
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XLTEAM Mechanical Effect Tube, Cathode Ray Tube, Electromagnetic Experiment Equipment, Mechanical Effect Demonstration Instrument, for The Students Training Oscilloscope
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Stereo Spectacular Demonstration & Sound Effects
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The Amen Effect: Ancient Wisdom to Mend Our Broken Hearts and World
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Bernoulli's Tubes, 24" - for Demonstration of Fluid Dynamics and The Bernoulli Effect of Water Flow - Eisco Labs
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Sound Effects and Demonstration
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Joytech Tesla Coil Wireless Transmission Demonstration Tool Lamp Glow Tube Neon Light YS12
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GSC International Therm-GEN Thermal Energy Transfer Demonstration for The Physical Science Classroom.
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Audio Fidelity Stereodisc Stereophonic Demonstration & Sound Effects Record
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