Elit Dekorasyon bilgileri
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Faydalı Bilgiler
Phenolphthalein Alkalinity (water) : The alkalinity in a water sample measured by the amount of standard acid required to lower the pH to a level of 8.3, as indicated by the change in color of phenolphthalein from pink to clear. Phenolphthalein alkalinity is expressed as milligrams per liter of equivalent calcium carbonate.
Aluminum (gen) : symbol Al, most abundant metallic element in the earth's crust. The atomic number of aluminum is 13; the atomic weight is 26.9815. Aluminum is a lightweight, silvery metal. In contact with air, aluminum rapidly becomes covered with a tough, transparent layer of aluminum oxide that resists corrosion. Aluminum is never found as alone but commonly occurs as aluminum silicate or as a silicate of aluminum mixed with other metals. Expensive to refine, these silicates are not useful ores. Bauxite, an impure hydrated aluminum oxide, is the commercial source of aluminum and its compounds. A low-cost technique dating from the 1880s is still the major method of production. Aluminum weighs less than one-third as much as steel. Its high strength-to-weight ratio makes aluminum useful in many applications
KONSTRÜKSİYON : 1.Yapı. 2. Bir çerçeve içinde yan yana dizilen veya bir ızgara meydana getiren ağaç çıtaların veya karton peteğin iki yüzüne kontrplak veya suni tahta levhası yapıştırılarak yapılmış (tabla).
Tırabzan babası: Ahşap merdivende tırabzanın ilk basamak yada sahanlık basamağındaki kalın çubuğu.
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