DOORS AND GATES |
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A door is a generally floor-length opening in a wall (or other partition), often equipped with a hinged or sliding panel which can be moved to leave the opening accessible, or to close it more or less securely. Doors are nearly universal in structures of all kinds (especially houses and other buildings), allowing passage between inside and outside, or among internal rooms. Doors are also found in vehicles, cupboards, cages, etc. A gate is a point of entry to a space enclosed by walls, or an opening in a fence. Gates may prevent or control entry or exit, or they may be merely decorative.
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HYDRAULICS |
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Hydraulics is a branch of science and engineering concerned with the mechanical properties of liquids. It is part of the more general discipline of fluid power. The word "hydraulics" comes from the Greek word ὑδϱαυλικός (hydraulikos) which in turn comes from ὕδϱαυλος meaning water organ which in turn comes from ὕδωϱ (water) and αὐλός (pipe). The earliest masters of this art were Hero of Alexandria and Ctesibius. The ancient engineers however focused on sacral and novelty uses of hydraulics, rather than practical applications. One of the founders of modern hydraulics was Benedetto Castelli, a student of Galileo Galilei.
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POLICE BRUTALITY |
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Police brutality is a term used to describe the excessive use of physical force, assault, verbal attacks, and threats by police officers. Widespread, systematic police brutality exists in many countries, even those which prosecute it. Brutality is one of several forms of police misconduct which include; false arrest, intimidation, racial profiling, political repression, surveillance abuse, sexual abuse, and police corruption.
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