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2. How to Remove Scratches From Glass Using Items You ... - AOL

   www.aol.com/lifestyle/don-t-panic-exactly-remove...

   The reason why these two household basics of the science behind using toothpaste and vinegar to repair scratched glass is that baking soda–based toothpaste contains tiny abrasive particles that ...

3. Surface imperfections (optics) - Wikipedia

   en.wikipedia.org/wiki/Surface_imperfections_(optics)

   In these cases, there is also a standard for the lighting conditions used for the test. Other standards classify scratches according to their dimensions. A dig is defined as a pit, a rough area, or a small crater on the surface of the glass (or any other optical material). [6] All standards measure the physical size of the dig.

4. Anti-scratch coating - Wikipedia

   en.wikipedia.org/wiki/Anti-scratch_coating

   Anti-scratch coating is a type of protective coating or film applied to an object's surface for mitigation against scratches. Scratches are small surface-level cuts left on a surface following interaction with a sharper object. Anti-scratch coatings provide scratch resistances by containing tiny microscopic materials with scratch-resistant ...

5. Mirrored sunglasses - Wikipedia

   en.wikipedia.org/wiki/Mirrored_sunglasses

   Some high-end sun glass brands can come with anti-scratch coating. There can be steps implemented to protect the sunglasses and prevent scratching or damage. Clean the sunglasses regularly using sunglasses cleaning products like a microfiber cloth, or a sun glass cleaner. Avoid leaving your sunglasses in extreme heat or cold, like a car.

6. Sunglasses - Wikipedia

   en.wikipedia.org/wiki/Sunglasses

   Frames and glasses must be designed so that small pieces of the glasses such as screws and glass particles cannot become dislodged, then float and be inhaled. 90% of astronauts wear glasses in space, even if they do not require corrective glasses on Earth, because zero-gravity and pressure changes temporarily affect their vision. [59]

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9. Chemically strengthened glass - Wikipedia

   en.wikipedia.org/wiki/Chemically_strengthened_glass

   Also unlike toughened glass, chemically strengthened glass may be cut after strengthening, but loses its added strength within approximately 20 mm of the cut. Similarly, when the surface of chemically strengthened glass is deeply scratched, this area loses its additional strength. Another negative of chemically strengthened glass is the added cost.