Model Functionallung Apparatus, unique and easy-to-use model features parts that replicate the actions of respiration, Easy to Assemble, includes an acrylic bell jar, Y tube, two balloons, rubber diaphragm with a knob for ease of movement, and an instruction manual
Green Diffraction Laser, optionaL accessory for the Diffraction Apparatus, Operating at 532 nm, it aLLows students to see and measure how diffraction patterns depend on Light waveLength
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