15 dezembro 2014

The Potsdam Gravity Potato



Why do some places on Earth have higher gravity than others? Sometimes the reason is unknown. To help better understand the Earth's surface, sensitive measurements by the orbiting satellites GRACE and CHAMP were used to create a map of Earth's gravitational field. Since a center for studying this data is in Potsdam, Germany, and since the result makes the Earth look somewhat like a potato, the resulting geoid has been referred to as the Potsdam Gravity Potato. High areas on this map, colored red, indicate areas where gravity is slightly stronger than usual, while in blue areas gravity is slightly weaker. Many bumps and valleys on the Potsdam Gravity Potato can be attributed to surface features, such as the North Mid-Atlantic Ridge and the Himalayan Mountains, but others cannot, and so might relate to unusually high or low sub-surface densities. Maps like this also help calibrate changes in the Earth's surface including variable ocean currents and the melting of glaciers. The above map was made in 2005, but more recent and more sensitive gravity maps of Earth was produced in 2011.



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iamthepureblindraven: movie: Christmas Movies Streaming On...

























iamthepureblindraven:



movie:



Christmas Movies Streaming On Netflix! More christmas here



Make sure you check out Danger in the Manger! It’s a film that was made in I think 2010 or 2011 starring David Tennant as a strict supply teacher to a class of elementary-aged children with an unhelpfully fun-loving child/man as a Teacher’s Aide called Mr. Poppy. David Tennant also shows up halfway through as his evil twin brother, Roderick. A thoroughly enjoyable British romp.



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This Is Still A Valid Point

During the temperance movement of the 1890s, marijuana was commonly recommended as a substitute for alcohol. The reason for this was that use of marijuana did not lead to domestic violence while alcohol abuse did.


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Tips For Making Fires Safer

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Current Cigarette Smoking Among Adults — United States,...

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Share To Wish somebody a Happy Holiday Season psychology...





Share To Wish somebody a Happy Holiday Season psychology style!


Studying psychology? Go Here —> http://ift.tt/1eWNk1f


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The first forced relocation due to the effects of climate change...





The first forced relocation due to the effects of climate change occurred in 2007 when 100 residents of Tegua Island in the Pacific Ocean were evacuated due to rising sea levels and subsequent flooding.


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