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A major piece of evidence for the presence of dark matter in the Universe, discovered by Vera Rubin from observations of galactic rotation curves in the 1970s. Stars luminosity Henrietta Swan Leavitt was an American astronomer who discovered the relation between the luminosity and the period of Cepheid variable stars at the beginning of 20th ...
The Lower Paleolithic period lasted over 3 million years, during which there many human-like species evolved including toward the end of this period, Homo sapiens.The original divergence between humans and chimpanzees occurred 13 (), however interbreeding continued until as recently as 4 Ma, with the first species clearly belonging to the human (and not chimpanzee) lineage being ...
John Logie Baird (1888–1946), Scotland – World's first working television, 26 January 1926 and electronic colour television; Abi Bakr of Isfahan (c. 1235), Persia/Iran – mechanical geared astrolabe with lunisolar calendar; George Ballas (1925–2011), U.S. – String trimmer; Frederick Banting (1891–1941), Canada – Insulin
The concept of automated data processing had been born. In 1890, Herman Hollerith invented the mechanical tabulating machine, a design used during the 1890 Census which stored and processed demographic and statistical information on punched cards. [14] [15] 1890 Shredded wheat. Shredded wheat is a type of breakfast cereal made from whole wheat.
Anna M. Mangin made a major contribution to everyday domesticated household needs in the 19th century. Her invention was the pastry fork. [1] According to her husband Andrew Mangin, Anna first came up with the concept of a simplified manner of making pastry by an improvement to the pastry fork, and "then and there described it to him.
1890: Austrian-born chemist Ida Freund became the first woman to work as a university chemistry lecturer in the United Kingdom. She was promoted to full lecturer at Newnham College, Cambridge. [110] 1890: Popular science educator and author Agnes Giberne co-founded the British Astronomical Association. [111]
The year 1890 in science and technology involved some significant events, listed below. Biology ... Jacques Loeb publishes his first major work on tropism, ...
The following articles cover the timeline of United States inventions: Timeline of United States inventions (before 1890), before the turn of the century; Timeline of United States inventions (1890–1945), before World War II; Timeline of United States inventions (1946–1991), during the Cold War