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Description:, Ever wonder how do we know the composition of suns n stars far away in the universal? The answer is spectrometer, the amazing equipment
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Handheld Durable Small Diffraction Spectroscope 55mm Jewelers Eye Loupe Jewelry Magnifier for Gems Jewelry Rocks Stamps Coins Watches Hobbies Antiques Gems, Coins, Stamps : Arts, Crafts & Sewing
Hand-Held Spectroscope: Description
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Handheld Durable Small Diffraction Spectroscope 55mm Jewelers Eye Loupe Jewelry Magnifier for Gems Jewelry Rocks Stamps Coins Watches Hobbies Antiques Gems, Coins, Stamps : Arts, Crafts & Sewing
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Smartphone-based spectroscopic systems based on absorption spectroscopy