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  2. Progressive Era - Wikipedia

    en.wikipedia.org/wiki/Progressive_Era

    The Progressive Era was one of general prosperity after the Panic of 1893 —a severe depression—ended in 1897. The Panic of 1907 was short and mostly affected financiers. However, Campbell (2005) stresses the weak points of the economy in 1907–1914, linking them to public demands for more Progressive interventions.

  3. Progressivism in the United States - Wikipedia

    en.wikipedia.org/wiki/Progressivism_in_the...

    t. e. Progressivism in the United States is a political philosophy and reform movement. Into the 21st century, it advocates policies that are generally considered social democratic and part of the American Left. It has also expressed itself with right-wing politics, such as New Nationalism and progressive conservatism.

  4. Progressivism - Wikipedia

    en.wikipedia.org/wiki/Progressivism

    Progressivism is a political philosophy and movement that seeks to advance the human condition through social reform – primarily based on purported advancements in social organization, science, and technology. [1] Adherents hold that progressivism has universal application and endeavor to spread this idea to human societies everywhere.

  5. Minimum deviation - Wikipedia

    en.wikipedia.org/wiki/Minimum_deviation

    In a prism, the angle of deviation (δ) decreases with increase in the angle of incidence (i) up to a particular angle.This angle of incidence where the angle of deviation in a prism is minimum is called the minimum deviation position of the prism and that very deviation angle is known as the minimum angle of deviation (denoted by δ min, D λ, or D m).

  6. Modern liberalism in the United States - Wikipedia

    en.wikipedia.org/wiki/Modern_liberalism_in_the...

    Modern liberalism (often simply referred to in the United States as liberalism) is the dominant version of liberalism in the United States. It combines ideas of civil liberty and equality with support for social justice and a mixed economy. Modern liberalism is one of two major political ideologies of the United States, with the other being ...

  7. Progressive Party (United States, 1924–1934) - Wikipedia

    en.wikipedia.org/wiki/Progressive_Party_(United...

    The Progressive Party was a political party created as a vehicle for Robert M. La Follette, Sr. to run for president in the 1924 election. It did not run candidates for other offices, and it disappeared after the election. The party advocated progressive positions such as government ownership of railroads and electric utilities, cheap credit ...

  8. Fraunhofer lines - Wikipedia

    en.wikipedia.org/wiki/Fraunhofer_lines

    The Fraunhofer lines are a set of spectral absorption lines. They are dark absorption lines, seen in the optical spectrum of the Sun, and are formed when atoms in the solar atmosphere absorb light being emitted by the solar photosphere. The lines are named after German physicist Joseph von Fraunhofer, who observed them in 1814.

  9. Three-CCD camera - Wikipedia

    en.wikipedia.org/wiki/Three-CCD_camera

    A three-CCD (3CCD) camera is a camera whose imaging system uses three separate charge-coupled devices (CCDs), each one receiving filtered red, green, or blue color ranges. Light coming in from the lens is split by a beam-splitter prism into three beams, which are then filtered to produce colored light in three color ranges or "bands".