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A photograph of Laser-Gard Argon glasses with the following optical density 190-520nm OD>9, 532nm OD>4.5, and 5,000-11,000nm OD>7.; 23 December 2009, 23:54 (UTC); Own work (Original text: I (Chhe (talk)) created this
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Laser - Wikipedia - yrty - Laser A laser is a device that emits light through a process of optical - StuDocu
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