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(470092-770)
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(470223-984)
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Energy Tube, teaching resource for an array of scientific concepts: open and closed circuits, conductors vs. Insulators, light waves, sound waves,currents, and energy, When a conductor touches both of the electrodes on tube, tube emits a sound and flashing red/green/blue LED lights
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Item Number :
(470002-192)
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Item Number :
(470219-482)
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Equilateral Refraction Prism, good quality Flint Glass, index of refraction plate, measuring 75mm long by 9mm thick
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(470151-282)
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Item Number :
(3039129)
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(470135-324)
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Item Number :
(000000000005296210)
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(000000000005289409)
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Item Number :
(470225-196)
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Item Number :
(000000000005296135)
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Item Number :
(000000000005289408)
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(000000000005296311)
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(000000000005289407)
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(000000000005289406)
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Item Number :
(000000000005296132)
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