Good optical quality, good focal range for the experimenter, good way to demonstrate the focal points of parabolic mirrors.
Optical Crystal Photography Prisms Science
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Lines Inch Diffraction Grating Sheet
SEO-Optimized Ajax Scientific Mini Light Bulb
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π Diffraction Grating Slides by Rainbow Symphony
Anatomical Chart of Spinal Nerves and Dermatomes
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KISSTAKER Removable Heart Visceral Educational Parts
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