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The gravity of Earth, denoted by g, is the net acceleration that is imparted to objects due to the combined effect of gravitation (from mass distribution within Earth) and the centrifugal force (from the Earth's rotation ). [2] [3] It is a vector quantity, whose direction coincides with a plumb bob and strength or magnitude is given by the norm .
An Earth ellipsoid or Earth spheroid is a mathematical figure approximating the Earth's form, used as a reference frame for computations in geodesy, astronomy, and the geosciences. Various different ellipsoids have been used as approximations. It is a spheroid (an ellipsoid of revolution) whose minor axis (shorter diameter), which connects the ...
The Man from Earth is a 2007 American science fiction drama film directed by Richard Schenkman. It was written by Jerome Bixby, who conceived the screenplay in the early 1960s and completed it on his deathbed in April 1998. [2] It stars David Lee Smith as John Oldman, a departing university professor, who puts forth the notion that he is more ...
Earth system science. An ecological analysis of CO. 2 in an ecosystem. As systems biology, systems ecology seeks a holistic view of the interactions and transactions within and between biological and ecological systems. Earth system science ( ESS) is the application of systems science to the Earth.
The geographical centre of Earth is the geometric centre of all land surfaces on Earth. Geometrically defined it is the centroid of all land surfaces within the two dimensions of the Geoid surface which approximates the Earth's outer shape. The term centre of minimum distance [1] specifies the concept more precisely as the domain is the sphere ...
The designation "Earth-616" has its origins in Captain Britain comics from the early 1980s and can be attributed to both Dave Thorpe and Alan Moore. The term was first used in "Rough Justice", a story credited to both Alan Moore and Alan Davis published in July 1983 by Marvel UK in the seventh issue of the anthology comic The Daredevils (and ...
Branch/service. United States Army. Battles/wars. World War II. Gaylord Anton Nelson (June 4, 1916 – July 3, 2005) was an American politician from Wisconsin who served as a United States senator and governor. He was a member of the Democratic Party and the founder of Earth Day, which launched a new wave of environmental activism.
Geologic time scale. The geologic time scale, proportionally represented as a log-spiral with some major events in Earth's history. A megaannus (Ma) represents one million (10 6) years. The geologic time scale or geological time scale ( GTS) is a representation of time based on the rock record of Earth. It is a system of chronological dating ...
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