The standard definition of normal visual acuity (20/20 or 6/6 vision) is the ability to resolve a spatial pattern separated by a visual angle of one minute of arc. The terms 20/20 and 6/6 are derived from standardized sized objects that can be seen by a person of normal vision at the specified distance. For example, if one can see at a distance of 20 ft an object that normally can be seen at 20 ft, then one has 20/20 vision. If one can see at 20 ft what a normal person can see at 40 ft, then one has 20/40 vision.
Constitutional amendments adopted during Reconstruction were intended to-provide legal and political rights for African Americans-end property and religious qualifications for voting-correct problems with the electoral college system-limit the number of terms of the president.
The African-American Civil Rights Movement were the movements during the 1950âs to 1960âs that were aimed at making racial discrimination against African Americans illegal and restoring their voting.his movement, as well as the Black Power Movement between the 1960âs and 1970âs, expanded the goals of the Civil Rights Movement beyond ending racial discrimination by including the feelings of political and economic self-sufficiency, racial dignity, and freedom from any oppression by white Americans.