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2. Pavement light - Wikipedia

   en.wikipedia.org/wiki/Pavement_light

   The glass in many old pavement lights is now either purple or straw-colored. This is a side-effect of the manufacturing process. Pure silica glass is transparent, but older glass manufacture often used silica from sand, which contains iron and other impurities. [29] Iron produces a greenish tint in the finished glass.

3. VELUX - Wikipedia

   en.wikipedia.org/wiki/VELUX

   A pair of VELUX skylights, GGL-7 center-pivot roof window (forward) and FS2 fixed Skylight (above) installed in a cathedral ceiling. VELUX has 21 production sites in 12 countries and sales companies in 37 countries. [4] The VELUX Group employs 11,900 employees worldwide.

4. Comparison shopping website - Wikipedia

   en.wikipedia.org/wiki/Comparison_shopping_website

   The general nature of shopping focused price comparison websites is that, since their content is provided by retail stores, content on price comparison websites is unlikely to be absolutely unique. The table style layout of a comparison website could be considered by Google as "Autogenerated Content and Roundup/Comparison Type of Pages". [ 17 ]

5. PriceRunner - Wikipedia

   en.wikipedia.org/wiki/PriceRunner

   The website PriceRunner is a price comparison service launched in Sweden in 1999. It allows users to compare prices on a range of products. [1] The company is headquartered in Stockholm, Sweden, and also operates within Denmark, and the UK. [2] In March 2022, it was announced that PriceRunner had been acquired by the Swedish fintech company ...

6. Daylighting (architecture) - Wikipedia

   en.wikipedia.org/wiki/Daylighting_(architecture)

   Skylights are widely used in daylighting design in residential and commercial buildings, mainly because they are the most effective source of daylight on a unit area basis. An alternative to a skylight is a roof lantern. A roof lantern is a daylighting cupola that sits above a roof, as opposed to a skylight which is fitted into a roof's ...

7. Lightwell - Wikipedia

   en.wikipedia.org/wiki/Lightwell

   In architecture, a lightwell, [NB 1] sky-well, [NB 2] or air shaft is an unroofed or roofed external space provided within the volume of a large building to allow light and air to reach what would otherwise be a dark or unventilated area.

8. Building-integrated photovoltaics - Wikipedia

   en.wikipedia.org/wiki/Building-integrated...

   The Ministry of Finance, the Ministry of Science and Technology and the National Energy Bureau have jointly announced the details of the program in July 2009. [36] Qualified on-grid photovoltaic electricity generation projects including rooftop, BIPV, and ground mounted systems are entitled to receive a subsidy equal to 50% of the total ...

9. Foot (unit) - Wikipedia

   en.wikipedia.org/wiki/Foot_(unit)

   Both the UK and Canada have partially metricated their units of measurement. The measurement of altitude in international aviation (the flight level unit) is one of the few areas where the foot is used outside the English-speaking world. The most common plural of foot is feet. However, the singular form may be used like a plural when it is ...