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List of unsolved problems may refer to several notable conjectures or open problems in various academic fields: Natural sciences, engineering and medicine [ edit ]
Priestley, who migrated to the United States in 1794, was the first of thousands of talented scientists drawn to the United States in search of a free, creative environment. [6] Alexander Graham Bell placing the first New York to Chicago telephone call in 1892. Other scientists had come to the United States to take part in the nation's rapid ...
The nature of the history of science is a topic of debate (as is, by implication, the definition of science itself). The history of science is often seen as a linear story of progress [27] but historians have come to see the story as more complex.
The Scientific Revolution was a series of events that marked the emergence of modern science during the early modern period, when developments in mathematics, physics, astronomy, biology (including human anatomy) and chemistry transformed the views of society about nature.
Societal collapse (also known as civilizational collapse or systems collapse) is the fall of a complex human society characterized by the loss of cultural identity and of social complexity as an adaptive system, the downfall of government, and the rise of violence. [1]
The definition of populism is a complex one as due to its mercurial nature; it has been defined by many different scholars with different focuses, including political, economic, social, and discursive features. [4] Populism is often split into two variants in the United States, one with a focus on culture and the other that focuses on economics ...
In a 1900 speech to the International Congress of Mathematicians, David Hilbert set out a list of 23 unsolved problems in mathematics. These problems, spanning many areas of mathematics, formed a central focus for much of 20th-century mathematics. Today, 10 have been solved, 7 are partially solved, and 2 are still open.
The 19th century saw the founding of a number of national mathematical societies: the London Mathematical Society in 1865, [15] the Société Mathématique de France in 1872, [16] the Edinburgh Mathematical Society in 1883, [17] the Circolo Matematico di Palermo in 1884, [18] and the American Mathematical Society in 1888. [19]