photochromic


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photochromic

(ˌfəʊtəʊˈkrəʊmɪk)
adj
(General Physics) (of glass) changing colour with the intensity of incident light, used, for example, in sunglasses that darken as the sunlight becomes brighter
References in periodicals archive ?
"You can help yourself by keeping a clean and unscratched pair of sunglasses handy, however you must avoid photochromic lenses.
When it comes to photochromic degradation, I am in terrific shape.
Let's hope they're all replaced before Manchester United arrive for the FA Cup Final against Chelsea a week on Saturday - their fans won't be tickled pink by what stadium boss Alex Horne is calling "photochromic degradation" (that's "sun damage" to you and me).
The ferry lookout, who was 60 and slightly short-sighted, was wearing glasses with photochromic lenses which "effectively reduced his ability to see small lights by at least 20%", the report added.
Moreover, Julbo is the only manufacturer in North America that serves the Category-4 eyewear market with goggles and photochromic sunglasses for glacier and high-altitude use.
Opt for photochromic lenses that will change according to the amount of light.
The cup features DynaColor photochromic ink developed by Chromatic Technologies, Inc.
Photochromic glass darkens when exposed to sunlight and lightens when removed from sunlight.
New organic photochromic materials are promising candidates for optical write-read-erase data storage systems because they exist in two photo-chemically active states that can represent the two digital states (1 and 0).
Photochromic substances exist in a colorless and colored state.
Aurora Biosciences Corporation (San Diego, CA; 858-404-6767) announced the issuance of United States Patent 6,046,925 entitled "Photochromic Fluorescent Proteins and Optical Memory Storage Devices Based on Fluorescent Proteins."
Photochromic lenses (the ones that darken or lighten depending on the ambient light) are good if you run in and out of shady and sunny areas.