helium
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helium |
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| navigate by keyword : abstract beam color education einstein equipment helium inversion laser light line military mirror neon optical optics physics population prism propagation ray red reflection research science smoke technology trace track trajectory |
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| Helium Neon Laser used for scientific research |
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Stockphotos.ro (c) 2024. All stock photos are provided by Dreamstime and are copyrighted by their respective owners. |
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