Explain How Does Advertising Mirrors Society - this
This episode, amongst many others including instances revolving around president Jacob Zuma, revealed how the African National Congress as ruling political party utilized patronage to reward supporters and strengthen the leading faction of the party's control over governmental institutions. Tammany boss William M. Tweed was an American politician who ran what is considered now to have been one of the most corrupt political machines in the country's history. Tweed and his cronies ruled for a brief time with absolute power over the city and state of New York. Guiteau , a disappointed office-seeker, assassinated him. To prevent further political violence and to assuage public outrage, Congress passed the Pendleton Act in , which set up the Civil Service Commission. Henceforth, applicants for most federal government jobs would have to pass an examination. Federal politicians' influence over bureaucratic appointments waned, and patronage declined as a national political issue. Shakman v. Democratic Organization of Cook County , occurred involving political patronage and its constitutionality. Explain How Does Advertising Mirrors SocietyConvex mirrors[ edit ] A convex mirror diagram showing the focus, focal lengthcentre of curvature, principal axis, etc. A convex mirror or diverging mirror is a curved mirror in which the reflective surface bulges towards the light source.
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Such mirrors always form a virtual imagesince the focal point F and the centre of curvature 2F are both imaginary points Hkw the mirror, that cannot be reached. As a result, images formed by these mirrors cannot be projected on a screen, since the image is inside the mirror. The image is smaller than the object, but gets larger as the object approaches the mirror. A collimated parallel beam of light diverges spreads out after reflection from a convex mirror, since the normal to the surface differs at each spot on the mirror.
Uses of convex mirrors[ edit ] Convex mirror lets motorists see around a corner. Detail of the convex mirror in the Arnolfini Portrait The passenger-side mirror on a car is typically a convex mirror. In some countries, these are labeled with the safety warning " Objects in mirror are closer than they appear ", to Dos the driver of the convex mirror's distorting effects on distance perception.
Convex mirrors are preferred in vehicles because they give an upright not invertedthough diminished smallerimage and Steve Boss they provide a wider field of view as they are curved outwards.
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These mirrors are often found in the hallways of various buildings commonly known as "hallway safety mirrors"including hospitalshotelsschoolsMirdorsand apartment buildings. They are source mounted on a wall or ceiling where hallways intersect each other, or where they make sharp turns.
They are useful for people to look at any obstruction they will face on the next hallway or after the next turn. They are also used on roadsdrivewaysand alleys to provide safety for motorists where there is a lack of visibility, especially at curves and turns. Similar devices are sold to be attached to ordinary computer monitors.
Convex mirrors make everything seem smaller but cover a larger area of surveillance. They were also known as "bankers' eyes" due to the fact that their wide field of vision was useful for security.]
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