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2. Retroreflective sheeting - Wikipedia

   en.wikipedia.org/wiki/Retroreflective_sheeting

   Flash photo of car with reflective stickers Flash photo of moped with retroreflective sheeting tape Retroreflective sheeting is flexible retroreflective material primarily used to increase the nighttime conspicuity of traffic signs , high-visibility clothing , and other items so they are safely and effectively visible in the light of an ...

3. Vinyl banner - Wikipedia

   en.wikipedia.org/wiki/Vinyl_banner

   The most commonly used material is a heavy weight vinyl known as PVC (polyvinyl chloride). The weights of the different banner substrates range from as light as 9 ounces per square yard (310 g/m 2) to as heavy as 22 oz/sq yd (750 g/m 2), and may be double- or single-sided.

4. Todd Haimes Theatre - Wikipedia

   en.wikipedia.org/wiki/Todd_Haimes_Theatre

   The original upholstery was replaced with vinyl in the mid-20th century, then changed to dark red in the late 1990s. [32] The Selwyn was originally decorated in old Italian blue and antique gold. [ 7 ] [ 23 ] [ 35 ] The theater had also contained Alps-green and Pavanazzo marbles, [ 7 ] as well as murals and gold-leaf ornamentation.

5. List of refractive indices - Wikipedia

   en.wikipedia.org/wiki/List_of_refractive_indices

   Some representative refractive indices; Name of material λ (nm) Refractive index no. n Reference Vacuum: 1 (by definition) Air at STP: 1.000273 [citation needed]Gases at 0 °C and 1 atm

6. Light reflectance value - Wikipedia

   en.wikipedia.org/wiki/Light_Reflectance_Value

   LRV on Paint Swatch. In architecture, light reflectance value (LRV), is a measure of visible and usable light that is reflected from a surface when illuminated by a light source. [1]

7. Poly(methyl methacrylate) - Wikipedia

   en.wikipedia.org/wiki/Poly(methyl_methacrylate)

   PMMA is used in the lenses of exterior lights of automobiles. [30] Spectator protection in ice hockey rinks is made from PMMA. Historically, PMMA was an important improvement in the design of aircraft windows, making possible such designs as the bombardier's transparent nose compartment in the Boeing B-17 Flying Fortress. Modern aircraft ...