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The minimum path difference that will produce a phase difference of 180º for light of wavelength 600 nm is
Immigration Restriction League
An early 20th century organization in the United States that advocated for the limitation of immigration, particularly from southern and eastern Europe.
Professionals
Individuals engaged in a profession who possess specialized knowledge, skills, and often a requirement for specific education or training.
Boston
A historic city in Massachusetts, United States, known for its significant role in the American Revolution.
Chinese Exclusion Policies
Laws enacted by various countries, notably the United States in the late 19th and early 20th centuries, that prohibited the immigration of Chinese laborers.
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