Examlex
A telescope with a Cassegrain focus reflects light through an opening in the primary mirror for measurement at a camera.The telescope's mirror therefore has a small hole in it where light cannot be collected.How much smaller is the light-collecting power of a telescope with a primary mirror of diameter 10 m and a circular hole with a diameter of 1 m than an identical telescope without such a hole?
Legal Immigration
The process by which individuals enter and reside in a country in accordance with its laws and regulations.
Pluralism
A condition or system in which multiple diverse groups coexist, participate, and contribute within a society, respecting each other's differences.
Segregation
The physical and legal separation of groups by race or ethnicity.
Public Facilities
Shared resources such as parks, libraries, transportation systems, and utilities that are available for use by the general population.
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