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2. Wratten number - Wikipedia

   en.wikipedia.org/wiki/Wratten_number

   Wratten number. Wratten numbers are a labeling system for optical filters, usually for photographic use comprising a number sometimes followed by a letter. The number denotes the color of the filter and its spectral characteristics, and these numbers can be grouped into broad categories, but the numbering system is arbitrary within a group and ...

3. Oakley, Inc. - Wikipedia

   en.wikipedia.org/wiki/Oakley,_Inc.

   Oakley, Inc. is an American company headquartered in Foothill Ranch, California, which is an autonomous subsidiary of Luxottica.The company designs, develops and manufactures sports performance equipment and lifestyle pieces including sunglasses, safety glasses, eyeglasses, sports visors, ski/snowboard goggles, watches, apparel, backpacks, shoes, optical frames, and other accessories.

4. Color blind glasses - Wikipedia

   en.wikipedia.org/wiki/Color_blind_glasses

   Color blind glasses or color correcting lenses are light filters, usually in the form of glasses or contact lenses, that attempt to alleviate color blindness, by bringing deficient color vision closer to normal color vision or to make certain color tasks easier to accomplish. Despite its viral status, the academic literature is generally ...

5. Optical filter - Wikipedia

   en.wikipedia.org/wiki/Optical_filter

   An optical filter is a device that selectively transmits light of different wavelengths, usually implemented as a glass plane or plastic device in the optical path, which are either dyed in the bulk or have interference coatings. The optical properties of filters are completely described by their frequency response, which specifies how the ...

6. What Foods and Products Have Red Dye No. 3, and Why Did ... - AOL

   www.aol.com/foods-products-red-dye-no-113000079.html

   Red dye No. 3, among other additives, has been banned in California under a new law. The additive appears in thousands of products, including candies and some medications.

7. Update AOL Mail settings - AOL Help

   help.aol.com/articles/aol-mail-mail-settings

   Once you've created a filter, you'll be able to edit or delete it from the same screen. Filters can be deleted by clicking the X next to "Edit." Create a filter. 1. Click Create filter. 2. Enter the parameters of your filter. 3. Click Save. Edit a filter. 1. Mouse over the filter's name. 2. Click Edit. 3. Enter the change you want to make. 4 ...

8. Chelsea filter - Wikipedia

   en.wikipedia.org/wiki/Chelsea_filter

   This discrimination is possible because chromium (containing iron) and vanadium-free emeralds emit a red fluorescence when illuminated by white light that also has a content of ultraviolet wavelengths. Synthetic emeralds were commercially introduced around 1940. These produce the same pink-red response as some emeralds through the Chelsea filter.

9. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!