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2. Abbe number - Wikipedia

   en.wikipedia.org/wiki/Abbe_number

   Values of range from below 25 for very dense flint glasses, around 34 for polycarbonate plastics, up to 65 for common crown glasses, and 75 to 85 for some fluorite and phosphate crown glasses. Most of the human eye's wavelength sensitivity curve, shown here, is bracketed by the Abbe number reference wavelengths of 486.1 nm (blue) and 656.3 nm (red)

3. List of refractive indices - Wikipedia

   en.wikipedia.org/wiki/List_of_refractive_indices

   Sugar solution, 75%: 1.4774 [20] Poly(methyl methacrylate) (PMMA) 1.4893–1.4899: Halite (rock salt) 1.516: Plate glass (window glass) 1.52 [29] Crown glass (pure) 1.50–1.54: PETg: 1.57: Polyethylene terephthalate (PET) 1.5750: Polycarbonate: 150: 1.60 [30] Crown glass (impure) 1.485–1.755: Flint glass (pure) 1.60–1.62: Bromine: 1.661 ...

4. Optical coating - Wikipedia

   en.wikipedia.org/wiki/Optical_coating

   The simplest optical coatings are thin layers of metals, such as aluminium, which are deposited on glass substrates to make mirror surfaces, a process known as silvering. The metal used determines the reflection characteristics of the mirror; aluminium is the cheapest and most common coating, and yields a reflectivity of around 88%-92% over the ...

5. Poly(methyl methacrylate) - Wikipedia

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

   PMMA is also known as acrylic, acrylic glass, as well as by the trade names and brands Crylux, Hesalite, Plexiglas, Acrylite, Lucite, and Perspex, among several others . This plastic is often used in sheet form as a lightweight or shatter-resistant alternative to glass. It can also be used as a casting resin, in inks and coatings, and for many ...

6. Plate glass - Wikipedia

   en.wikipedia.org/wiki/Plate_glass

   Plate glass is often used in windows. Fragment of a Roman window glass plate dated to 1st to 4th century CE. Plate glass, flat glass or sheet glass is a type of glass, initially produced in plane form, commonly used for windows, glass doors, transparent walls, and windscreens. For modern architectural and automotive applications, the flat glass ...

7. Rob Lowe says infamous 1988 sex tape was a blessing ... - AOL

   www.aol.com/entertainment/rob-lowe-says-infamous...

   Lowe was 24 when he videotaped himself having sex with a 16-year-old girl, a decision he now acknowledges was fueled by "fame, money and drugs." The two had reportedly met inside an over-21 nightclub.