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18 godz. temu · Selenium is a chemical element; it has the symbol Se and atomic number 34. It has various physical appearances, including a brick-red powder, a vitreous black solid, and a grey metallic-looking form. It seldom occurs in this elemental state or as pure ore compounds in Earth's crust.
18 godz. temu · Electrical contacts may carry a "T" rating symbol indicating that they are designed to control circuits with the high inrush current characteristic of tungsten lamps. For a 100-watt, 120-volt general-service lamp, the current stabilizes in about 0.10 seconds, and the lamp reaches 90% of its full brightness after about 0.13 seconds. [130]
18 godz. temu · A British Rail Class 442 third-rail electric multiple unit in Battersea. The contact shoe of a New York City Subway car making contact with the third rail. In the foreground is the third rail for the adjacent track. A third rail, also known as a live rail, electric rail or conductor rail, is a method of providing electric power to a railway locomotive or train, through a semi-continuous rigid ...
18 godz. temu · The Olympic flame is a symbol used in the Olympic movement.It is also a symbol of continuity between ancient and modern games. [1] The Olympic flame is lit at Olympia, Greece, several months before the Olympic Games.This ceremony starts the Olympic torch relay, which formally ends with the lighting of the Olympic cauldron during the opening ceremony of the Olympic Games.
18 godz. temu · The Caribbean (/ ˌ k ær ɪ ˈ b iː ən, k ə ˈ r ɪ b i ən / KARR-ih-BEE-ən, kə-RIB-ee-ən, locally / ˈ k ær ɪ b iː æ n / KARR-ih-bee-an; [4] Spanish: el Caribe; French: les Caraïbes; Dutch: de Caraïben) is a subregion of the Americas that includes the Caribbean Sea and its islands, some of which are surrounded by the Caribbean Sea [5] and some of which border both the Caribbean ...
18 godz. temu · A car, or an automobile, is a motor vehicle with wheels.Most definitions of cars state that they run primarily on roads, seat one to eight people, have four wheels, and mainly transport people over cargo. [1] [2] There are around one billion cars in use worldwide.The car is considered an essential part of the developed economy. [3]The French inventor Nicolas-Joseph Cugnot built the first steam ...
18 godz. temu · Happiness is a complex and multifaceted emotion that encompasses a range of positive feelings, from contentment to intense joy. It is often associated with positive life experiences, such as achieving goals, spending time with loved ones, or engaging in enjoyable activities. However, happiness can also arise spontaneously, without any apparent ...
