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17 hours ago · Unit 731 (Japanese: 731部隊, Hepburn: Nana-san-ichi Butai), short for Manchu Detachment 731 and also known as the Kamo Detachment: 198 and the Ishii Unit, was a covert biological and chemical warfare research and development unit of the Imperial Japanese Army that engaged in lethal human experimentation and biological weapons manufacturing during the Second Sino-Japanese War (1937–1945 ...
17 hours ago · Tiger. The tiger ( Panthera tigris) is a member of the genus Panthera and the largest living cat species native to Asia. It has a powerful, muscular body with a large head and paws, a long tail and orange fur with black, mostly vertical stripes. It is traditionally classified into nine recent subspecies, though some recognise only two ...
17 hours ago · Samuel Langhorne Clemens (November 30, 1835 – April 21, 1910), [1] known by the pen name Mark Twain, was an American writer, humorist, and essayist. He was praised as the "greatest humorist the United States has produced," [2] with William Faulkner calling him "the father of American literature ." [3] Twain's novels include The Adventures of ...
17 hours ago · Germany, officially the Federal Republic of Germany (FRG), is a country in Central Europe.It lies between the Baltic and North Sea to the north and the Alps to the south. Its 16 constituent states have a total population of over 84 million in an area of 357,600 km 2 (138,100 sq mi), making it the most populous member state of the European Union.
17 hours ago · Mindfulness is the cognitive skill, usually developed through meditation, of sustaining meta-attention of the contents of one's own mind in the present moment. [1] [2] [note 1] [3] [web 1] [2] [4] [5] Mindfulness derives from sati, a significant element of Hindu and Buddhist traditions, [6] [7] and is based on Zen, Vipassanā, and Tibetan ...
17 hours ago · Fish are abundant in most bodies of water. They can be found in nearly all aquatic environments, from high mountain streams (e.g., char and gudgeon) to the abyssal and even hadal depths of the deepest oceans (e.g., cusk-eels and snailfish ), although none have been found in the deepest 25% of the ocean. [31]
17 hours ago · Wave equation. The wave equation is a second-order linear partial differential equation for the description of waves or standing wave fields such as mechanical waves (e.g. water waves, sound waves and seismic waves) or electromagnetic waves (including light waves). It arises in fields like acoustics, electromagnetism, and fluid dynamics.
