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History of the United States Navy. USS United States, the first of the original six frigates of the United States Navy, seen here defeating HMS Macedonian in battle, before taking her as a prize during the War of 1812. USS Gerald R. Ford, as of 2018, is the US Navy's latest and most advanced nuclear powered aircraft carrier, and the largest ...
The Doppler effect (also Doppler shift) is the change in the frequency of a wave in relation to an observer who is moving relative to the source of the wave. [1] [2] [3] The Doppler effect is named after the physicist Christian Doppler, who described the phenomenon in 1842.
The protoscience of chemistry, and alchemy, was unsuccessful in explaining the nature of matter and its transformations. However, by performing experiments and recording the results, alchemists set the stage for modern chemistry. The history of chemistry is intertwined with the history of thermodynamics, especially through the work of Willard ...
History of military technology. The military funding of science has had a powerful transformative effect on the practice and products of scientific research since the early 20th century. Particularly since World War I, advanced science-based technologies have been viewed as essential elements of a successful military.
Navy Times. Navy Times ( ISSN 0028-1697) is an American newspaper published 26 times per year serving active, reserve and retired United States Navy personnel and their families, providing news, information, analysis, community lifestyle features, educational supplements, and resource guides. Navy Times also reports on the United States Coast ...
The Tariff Act of 1789 imposed the first national source of revenue for the newly formed United States. The new U.S. Constitution ratified in 1789, allowed only the federal government to levy uniform tariffs. Only the federal government could set tariff rates (customs), so the old system of separate state rates disappeared.
Impressment, colloquially " the press " or the " press gang ", is the forced conscription of men into a military force, especially a naval force, via intimidation and physical coercion, conducted by an organized group (hence "gang"). European navies of several nations used forced recruitment by various means. The large size of the British Royal ...
The history of the periodic table is also a history of the discovery of the chemical elements. The first person in recorded history to discover a new element was Hennig Brand, a bankrupt German merchant. Brand tried to discover the philosopher's stone —a mythical object that was supposed to turn inexpensive base metals into gold.