bbc hindi

[AzetSar]

When you look at a piece of mottled camouflage in a matching environment, your brain naturally "connects" the lines of the colored blotches with the lines of the trees, ground, leaves and shadows. This affects the way you perceive. Recognize the person or object wearing that camouflage. Human perception naturally categorizes things in the world as separate objects. When you look at a scene, you are gathering an immense amount of information with your eyes and other senses. In order for your conscious mind to make any sense out of this information, your brain has to break it down into component parts. When your brain perceives a long, vertical area of brown with green blotches connected to it, you perceive a tree. And when your brain perceives many, many individual trees in a given area, you perceive a forest. A U.S. Marine in full camouflage gear: The colors match his surroundings, and the disruptive pattern conceals the contours of his body. One way to improve performance and fuel economy is to increase the compression ratio inside the engine. The compression ratio refers to the amount of fuel. Air squeezed into the combustion chamber. When this ratio is higher, it uses fuel more efficiently. Mazda is using this approach to its latest generation of vehicles, both diesel- and gasoline-powered. The SKYACTIV-G gasoline engine, for example, uses a 13:1 compression ratio in North America, where the norm is 10:1. SKYACTIV-G vehicles in Europe have a 14:1 ratio, since more people in Europe use high-octane gasoline regularly. Higher octane gas on its own can solve some of this problem, but Mazda has developed a longer exhaust manifold that reduces the temperature and the chance of engine knock. The SKYACTIV-G system also has a faster combustion time, which means the air-fuel mixture ignites properly before the temperature can build up and knocking begins. All this engine technology -- as well as weight-saving materials and a new transmission -- mean 15 percent lower fuel consumption and emissions and 15 percent more torque. bbc amharic

















































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