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Inter Face: The most important qualities for hair are that it be healthy, shining, and in a flattering, easy-to-manage style. Many fashion magazines suggest hair styles according to the shape of the face in order to make the face resemble as closely as possible the perfect oval. The circularity of a round face may be minimized by a sleek, controlled style with side bangs. A square face needs a style that cuts across the square corners at the temples and is full around the jaw. The best style for a long face also rounds off the corners at the temples and is short. For a triangular face, a narrow chin should be filled out with chin-length hair, while a wide chin may be minimized with wide bangs. In finding the right hairstyle, however, a woman should also consider the proportions of her whole figure, the texture of her hair, her skill in handling it, and the character of her life.
Normally, the intake cowl will face forward in an area of free airflow under way, and the exhaust cowl will face aft so that a suction effect can be expected.
By adding one impurity atom to about 100 million silicon atoms, silicon is changed from an insulator to a moderate conductor. The techniques of adding impurities—doping—permit the formation of specific p- and n-type regions in a single piece of silicon. The action of the holes and electrons near the inter faceface, or junction, of the p- and the n-regions—known as the p-n junction—makes possible the operation of such electronic devices as diodes and transistors. A diode, which consists of a single p-n junction, lets current flow in one direction only. |
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