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Continental Drift

Continental drift

The concept of continental drift was first proposed by Alfred Wegener. In 1912 he noticed that the shapes of continents on either side of the Atlantic Ocean seem to fit together (for example, Africa and South America). Francis Bacon, Antonio Snider-Pellegrini, Benjamin Franklin, and others had noted much the same thing earlier. The similarity of southern continent fossil faunae and some geological formations had led a relatively small number of Southern hemisphere geologists to conjecture as early as 1900 that all the continents had once been joined into a supercontinent known as Pangaea. The concept was initially ridiculed by most geologists, who felt that an explanation of how a continent drifted was a prerequisite and that the lack of one made the idea of drifting continents wholly unreasonable. The theory received support through the controversial years from South African geologist Alexander Du Toit as well as from Arthur Holmes. The idea of continental drift did not become widely accepted as theory until the 1950s in Europe. By the 1960s, geological research conducted by Robert Dietz, Bruce Heezen, and Harry Hess along with a rekindling of the theory including a mechanism by J. Tuzo Wilson led to acceptance among North American geologists. The hypothesis of continental drift became part of the larger theory of plate tectonics. This article deals mainly with the historical development of the continental drift hypothesis before 1950. See: plate tectonics for information on current ideas underlying concepts of continental drift.

Various data

South America and Africa are moving apart at 3 cm per year, due to the seafloor spreading along the Mid-Atlantic Ridge. This is comparable to the growth speed of a fingernail. The fastest recorded seafloor spreading takes place along the East Pacific Rise at 15 cm per year.

Evidence for continental drift


- Sir Francis Bacon first noticed this peculiarity in the 17th century. Note: This section contains evidence available to Wegener's contemporaries and predecessors Sir Francis Bacon Evidence for continental drift is now extensive, in the form of plant and animal fossils of the same age found around different continent shores, suggesting that these shores were once joined. For example the fossils of the freshwater crocodile found in Brazil and South Africa. Another illustrative example is the discovery of fossils of the aquatic reptile Lystrosaurus from rocks of the same age from locations in South America, Africa, and Antarctica. There is also living evidence - the same animals being found on two continents. An example of this is a particular earthworm found in South America and South Africa. The complementary shapes of the facing sides of South America and Africa is obvious, but is a temporary coincidence. In millions of years, seafloor spreading, continental drift, and other forces of tectonophysics will further separate and rotate those two continents. It was this temporary feature which inspired Alfred Wegener to study what he defined as continental drift.

Permo-Carboniferous

Permo-Carboniferous was a period of great glaciation that occurred about 250 million years ago. It is one of the many ice ages that has occurred on this Earth. This is also an era that has been used to submit proof that the continents were once a large land mass called Gondwana. Permo-Carboniferous rocks are widely distributed in Gondwana. The widespread distribution of Permo-Carboniferous glacial sediments in South America, Africa, Madagascar, Arabia, India, Antarctica and Australia was one of the major pieces of evidence for the theory of continental drift. Glacial activity spanned virtually the whole of Carboniferous and Early Permian time (A.G. Smith 1997). Toward the end of the Carboniferous, and around 290 million years ago, Gondwanda hovered over the south polar regions, where glacial centres expanded across the continents, as evidenced by glacial deposits of tillites along with striations in ancient rocks. Those heavily grooved by the advancing glaciers showed lines of ice flow away from the equator and toward the poles, which is the opposite direction if the continents were situated where they are today. Overall, the southern continents drifted together over the South Pole, and massive ice sheets radiating outward from a central point crossed the present continentall boundaries. The Permo-Carboniferous ice sheet is so extensive that it can fit within a latitude circle of 50 degrees (A.G.Smith 1997) (Rahul Megharaj 1985).

The debate over continental drift

Before geophysical evidence started accumulating after World War II, the idea of continental drift caused sharp disagreement among geologists. Wegener had introduced his theory in 1912 at a meeting of the German Geological Association. His paper was published that year and expanded into a book in 1915. In 1921 the Berlin Geological Society held symposium on the theory. In 1922 Wegener's book was translated into English and received a wider audience. In 1923 the theory was discussed at conferences by Geological Society of France, the Geological Section of the British Association for the Advancement of Science, and the Royal Geological Society. The theory was carefully but critically reviewed in the journal Nature by Philip Lake. On November 15, 1926, the American Association of Petroleum Geologists (AAPG) held a symposium at which the continental drift hypothesis was vigorously debated. The resulting papers were published in 1928 under the title Theory of continental drift. Wegener himself contributed a paper to this volume. One of the main problems with Wegener's theory was that he believed that the continents "plowed" through the rocks of the ocean basins. Most geologists did not believe that this could be possible. Plate tectonics, a modern update of the old ideas of Wegener about "plowing" continents, accommodates continental motion through the mechanism of seafloor spreading. New rock is created by volcanism at mid-ocean ridges and returned to the Earth's mantle at ocean trenches. Remarkably, in the 1928 AAPG volume, G. A. F. Molengraaf of the Delft Institute (now University) of Technology proposed a recognisable form of seafloor spreading in order to account for the opening of the Atlantic Ocean as well as the East Africa Rift. Arthur Holmes (an early supporter of Wegener) suggested that the movement of continents was the result of convection currents driven by the heat of the interior of the Earth, rather than the continents floating on the mantle. The ideas of these two people led to the theory of plate tectonics, which replaced the theory of continental drift, and became the accepted theory in the 1960s (based on data that started to accumulate in the late 1950s).

Further reading


- Friedlander, Michael W. At the Fringes of Science, pages 21-26, Westview, 1995, ISBN 0-8133-2200-6. 1998 edition with new epilog: ISBN 0-8133-9060-5.
- Le Grand, H. E. Drifting Continents and Shifting Theories, Cambridge University, 1988, ISBN 0521311055 (paperback) and ISBN 0521322103 (hardback).

External links


- [http://www.ux1.eiu.edu/~cfjps/1300/cont_drift.html A brief introduction to Plate Tectonics, based on the work of Alfred Wegener.]
- [http://www.scotese.com/earth.htm Maps of continental drift, from the Precambrian to the future] Category:Plate tectonics ms:Teori hanyutan benua ko:대륙이동설 ja:大陸移動説 th:การเลื่อนไหลของทวีป

1912

1912 (MCMXII) was a leap year starting on Monday.

Events

January-March


- January 1 - Establishment of Republic of China.
- January 5 - Prague Party Conference
- January 6 - New Mexico is admitted as the 47th U.S. state.
- January 17 - British polar explorer Robert Falcon Scott and a team of four begin the second expedition to reach the South Pole.
- January 23 - The International Opium Convention is signed at The Hague.
- February 8 - Mexican Revolution - Military rebellion against the rule of Francisco Madero begins in Mexico City. Battles last for 10 days
- February 12 - Republic of China adopts the Gregorian calendar
- February 14 - Arizona is admitted as the 48th U.S. state.
- February 14 - In Groton, Connecticut, the first diesel-powered submarine is commissioned.
- February 18 - Francisco Madero is forced to resign - battle ends. All members of Madero's government are arrested.
- February 19 - Prizes are included in Cracker Jack candy boxes for the first time
- February 22 - Francisco Madero and Pino Suarez are shot, allegedly when they "tried to escape"
- March 1 - Albert Berry makes the first parachute jump from a moving airplane.
- March 1 - Georg Ritter von Trapp, head of the famous Austrian singing family memorialized in the musical The Sound of Music marries Agathe
- March 5 - Italian forces are the first to use airships for a military purpose by using them for reconnaissance west of Tripoli behind Turkish lines.
- March 7 - Roald Amundsen announces discovery of the South Pole
- March 7 - French aviator Henri Seimet makes the first non-stop flight from Paris to London in three hours
- March 12 - The Girl Guides (later renamed the Girl Scouts) are founded.
- March 16 - Lawrence Oates, ill member of Scott's South Pole expedition leaves the tent saying, "I am just going outside and may be some time"
- March 27 - Mayor Yukio Ozaki of Tokyo gives 3,000 cherry blossom trees to be planted in Washington, D.C. to symbolize the friendship between the two countries.
- March 30 - France establishes a protectorate over Morocco.

April-September


- April 15 - Sinking of the RMS Titanic.
- April 17 - Solar eclipse in Europe.
- April 19 - United States Senate inquiry into the Titanic sinking begins.
- May 2 - British Board of Trade inquiry into the sinking of Titanic begins.
- May 3 - The first victims of the RMS Titanic are buried in Halifax, Nova Scotia.
- May 5 - The 1912 Summer Olympics open in Stockholm, Sweden.
- May 13 - In the United Kingdom, the Royal Flying Corps (forerunner of the Royal Air Force) is established.
- June 4 - Fire in Constantinople - 1120 buildings destroyed
- June 5 - US Marines land on Cuba
- June 6-June 8 - Eruption of Novarupta in Alaska, second largest volcanic eruption in historic time.
- June 8 - Carl Laemmle incorporated Universal Pictures.
- July 12 - Greek island of Icana declares independence (Greece annexes it in November)
- July 19 - A meteorite with an estimated mass of 190 kg exploded over the town of Holbrook in Navajo County, Arizona causing approximately 16,000 pieces of debris to rain down on the town.
- July 30 - the Meiji Emperor of Japan, dies. He is succeeded by his son Yoshihito, the Taisho Emperor. In Japanese History, the event marks the end of the Meiji period and the beginning of the Taisho Era.
- August 12 - Sultan Abd al-Hafiz of Morocco abdicates.
- August 25 - Kuomintang, the Chinese nationalist party is founded.
- September 25 - Columbia University Graduate School of Journalism founded in New York,_New York.

October-November


- October 8 - First Balkan War begins: Montenegro declares war against Turkey.
- October 14 - While campaigning in Milwaukee, Wisconsin, former president Theodore Roosevelt is shot by saloonkeeper William Schrank. With a fresh flesh wound and the bullet still in him, Roosevelt still delivers his scheduled speech.
- October 16 - Bulgarian pilots Radul Minkov and Prodan Toprakchiev perform the first bombing with an airplane in history at the railway station of Karaagac near Edirne against Turkey.
- November 5 - U.S. presidential election, 1912: Democratic challenger Woodrow Wilson wins a landslide victory over Republican incumbent William Howard Taft. Taft's base was undercut by Progressive Party candidate (and former Republican) Theodore Roosevelt, who finished second, ahead of Taft.
- November 7 - The Deutsche Opernhaus (now Deutsche Oper Berlin) opened in the Berlin neighborhood of Charlottenburg with a production of Beethoven's Fidelio.
- November 11 - Chios declares its independence from the Ottoman Empire.
- November 24 - Mine explosion in Hokkaido, Japan - 245 dead
- November 27 - Spain declares a protectorate over the north shore of Morocco.
- November 28 - Albania declares its independence from the Ottoman Empire.

December


- December 3 - First Balkan War ends temporarily - Bulgaria, Greece, Montenegro, and Serbia (the Balkan League) sign an armistice with Turkey, ending the two-month long war.

Unknown dates


- Sea Scouting begins under the aegis of the Boy Scouts of America.
- Kazimierz Funk identifies vitamins.
- The first blues song, "The Memphis Blues," is published.
- Alfred Wegener proposes the theory of continental drift.
- Mount Katmai in Alaska explodes.
- Piltdown Man presented in Britain.
- British treasure hunters try to drain Lake Guatavita to find gold – they find nothing.
- African National Congress

Births

January-February


- January 1 - Kim Philby, British spy (d. 1988)
- January 3 - Armand Lohikoski, Finnish director (d. 2005)
- January 6 - Jacques Ellul, French philosopher (d. 1994)
- January 7 - Charles Addams, American cartoonist (d. 1988)
- January 8 - José Ferrer, Puerto Rican actor (d. 1992)
- January 19 - Leonid Kantorovich, Russian economist, Nobel Prize laureate (d. 1986)
- January 21 - Konrad Emil Bloch, German-born biochemist, recipient of the Nobel Prize in Physiology or Medicine (d. 2000)
- January 28 - Jackson Pollock, American painter (d. 1956)
- January 30 - Barbara W. Tuchman, American historian (d. 1989)
- February 4 - Erich Leinsdorf, Austrian conductor (d. 1993)
- February 6 - Eva Braun, Adolf Hitler's mistress (d. 1945)
- February 11 - Roy Fuller, English poet and novelist (d. 1991)
- February 19 - Stan Kenton, American musician (d. 1979)
- February 20 - Pierre Boulle, French author (d. 1994)
- February 27 - Lawrence Durrell, British writer (d. 1990)

March-April


- March 5 - David Astor, British newspaper publisher (d. 2001)
- March 8 - Preston Smith, Governor of Texas (d. 2003)
- March 12 - Irving Layton, Canadian poet
- March 14 - Les Brown, American band leader (d. 2001)
- March 15 - Lightnin' Hopkins, American musician (d. 1982)
- March 16 - Pat Nixon, First Lady of the United States (d. 1993)
- March 17 - Bayard Rustin, American civil rights activist (d. 1987)
- March 18 - Lucien Laurin, Canadian horse trainer (d. 2000)
- March 22 - Karl Malden, American actor
- March 23 - Betty Astell, British actress (d. 2005)
- March 23 - Wernher von Braun, German-born physicist and engineer (d. 1977)
- March 27 - James Callaghan, Prime Minister of the United Kingdom (d. 2005)
- April 8 - Sonja Henie, Norwegian figure skater (d. 1969)
- April 12 - Walt Gorney, American actor (d. 2004)
- April 15 - Kim Il Sung, President of North Korea (d. 1994)
- April 19 - Glenn T. Seaborg, American chemist, Nobel Prize laureate (d. 1999)
- April 22 - Kathleen Ferrier, British contralto (d. 1953)
- April 26 - A. E. van Vogt, Canadian-born writer (d. 2000)
- April 28 - Odette Sansom, French World War II heroine (d. 1995)

May-July


- May 3 - Virgil Fox, American organist (d. 1980)
- May 9 - Pedro Armendáriz, Mexican actor (d. 1963)
- May 9 - Per Imerslund, "The aryan idol" (d. 1943)
- May 11 - Foster Brooks, American actor and comedian (d. 2001)
- May 12 - Archibald Cox, Watergate special prosecutor (d. 2001)
- May 14 - Ben Hogan, American golfer (d. 1997)
- May 16 - Studs Terkel, American writer and broadcaster
- May 18 - Perry Como, American singer (d. 2001)
- May 18 - Walter Sisulu, South African anti-apartheid activist (d. 2003)
- May 21 - Monty Stratton, baseball player (d. 1982)
- May 22 - Herbert C. Brown, English-born chemist, Nobel Prize laureate (d. 2004)
- May 23 - Jean Françaix, French composer (d. 1997)
- May 23 - John Payne, American actor (d. 1989)
- May 25 - Princess Dukhye of Korea (d. 1989)
- May 27 - Sam Snead, American golfer (d. 2002)
- May 28 - Patrick White, Australian writer, Nobel Prize laureate (d. 1990)
- May 30 - Julius Axelrod, American biochemist, recipient of the Nobel Prize in Physiology or Medicine (d. 2004)
- May 31 - Alfred Deller, English countertenor (d. 1979)
- June 6 - Maria Montez, Dominican actress (d. 1951)
- June 23 - Alan Turing, British mathematician (d. 1954)
- June 25 - William T. Cahill, American politician (d. 1996)
- June 26 - Jay Silverheels, American actor (d. 1980)
- June 27 - Chen Kenmin, Japanese chef (d. 1990)
- June 30 - Ludwig Bölkow, German aeronautical engineer (d. 2003)
- July 1 - David R. Brower, American environmentalist (d. 2000)
- July 14 - Woody Guthrie, American folk musician (d. 1969)
- July 17 - Art Linkletter, American television host
- July 31 - Milton Friedman, American economist, Nobel Prize laureate
- July 31 - Irv Kupcinet, American newspaper columnist (d. 2003)

August-November


- August 9 - Anne Brown, American soprano
- August 10 - Jorge Amado de Faria, Brazilian author (d. 2001)
- August 11 - Thanom Kittikachorn, Prime Minister of Thailand (d. 2004)
- August 11 - Norman Levinson, American mathematician (d. 1975)
- August 13 - Salvador Luria, Italian-born biologist, recipient of the Nobel Prize in Physiology or Medicine (d. 1991)
- August 15 - Julia Child, American chef (d. 2004)
- August 16 - Ted Drake, English footballer (d. 1995)
- August 16 - Wendy Hiller, English actress (d. 2003)
- August 23 - Gene Kelly, American actor (d. 1996)
- August 25 - Erich Honecker, East German leader (d. 1994)
- August 30 - Edward Mills Purcell, American physicist, Nobel Prize laureate (d. 1997)
- August 30 - Nancy Wake, New Zealand World War II heroine
- September 5 - John Cage, American composer (d. 1992)
- September 11 - David Packard, American electrical engineer (d. 1996)
- September 19 - Kurt Sanderling, German conductor
- September 21 - Chuck Jones, American animator (d. 2002)
- September 22 - Martha Scott, American actress (d. 2003)
- September 24 - Don Porter, American actor (d. 1997)
- September 29 - Michelangelo Antonioni, Italian film director
- October 5 - Karl Hass, Nazi war criminal (d. 2004)
- October 5 - Kristina Söderbaum, German actress (d. 2001)
- October 17 - Pope John Paul I (d. 1978)
- October 21 - Georg Solti, Hungarian conductor (d. 1997)
- October 22 - Johan Hendrik Weidner, Belgian World War II resistance fighter (d. 1994)
- October 25 - Minnie Pearl, American commedienne (d. 1996)
- October 27 - Conlon Nancarrow, American composer (d. 1997)
- November 4 - Vadim Salmanov, Russian composer (d. 1978)
- November 10 - Birdie Tebbetts, baseball player and manager (d. 1999)
- November 11 - Larry LaPrise American songwriter (d. 1996)
- November 14 - Barbara Hutton, American socialite (d. 1979)
- November 14 - T. Y. Lin, Chinese-born civil engineer (d. 2003)
- November 19 - George Emil Palade, Romanian cell biologist, recipient of the Nobel Prize in Physiology or Medicine
- November 21 - Eleanor Powell, American actress and dancer (d. 1982)
- November 26 - Eugene Ionesco, Romanian-born playwright (d. 1994)

December


- December 11 - Carlo Ponti, Italian film producer
- December 12 - Henry Armstrong, American boxer (d. 1988)
- December 25 - Natalino Otto, Italian singer (d. 1969)
- December 27 - Conroy Maddox, British painter (d. 2005)

Deaths


- January 28 - Gustave de Molinari, Belgian economist (b. 1819)
- February 16 - Nikolai of Japan, Eastern Orthodox monk and saint (b. 1836)
- February 25 - Guillaume IV, Grand Duke of Luxembourg (b. 1852)
- March 1 - George Grossmith, English actor and comic writer (b. 1847)
- March 29 - Robert Falcon Scott, British Antarctic explorer (froze to death) (b. 1868)
- March 30 - Karl May, German author (b. 1842)
- April 15 - Victims of the sinking of the RMS Titanic:
  - Edward J. Smith, ship's captain (b. 1850)
  - John Jacob Astor IV, American businessman (b. 1864)
  - Archibald Butt, American presidential aide (b. 1865)
  - Benjamin Guggenheim, American businessman (b. 1865)
  - William Thomas Stead, English journalist (b. 1849)
  - Isidor Straus, German-American owner of Macy's (b. 1845)
  - Thomas Andrews, Jr., Titanic shipbuilder (b.1873)
- May 14 - August Strindberg, Swedish playwright and painter (b. 1849)
- May 14 - Frederick VIII, King of Denmark (b. 1843)
- May 25 - Austin Lane Crothers, American politician (b. 1860)
- May 30 - Wilbur Wright, American aviation pioneer (b. 1867)
- June 12 - Frédéric Passy, French economist, recipient of the Nobel Peace Prize (b. 1822)
- July 1 - Harriet Quimby, American pilot (b. 1875)
- July 2 - Tom Richardson, English cricketer (b. 1870)
- July 30 - Meiji Emperor of Japan (b. 1852)
- August 7 - François-Alphonse Forel, Swiss hydrologist (b. 1841)
- August 8 - Ross Winn, American anarchist writer and publisher (b. 1871)
- October 6 - Auguste Marie Francois Beernaert, Belgian statesman, recipient of the Nobel Peace Prize (b. 1829)
- October 24 - Mykola Lysenko, Ukrainian composer (b. 1842)
- October 30 - James S. Sherman, Vice President of the United States (b. 1855)
- November 10 - Louis Cyr, Canadian strongman (b. 1863)
- November 28 - Walter Benona Sharp, American oil pioneer (b. 1870)
- December 23 - Otto Schoetensack, German anthropologist (b. 1850)

Nobel Prizes


- Physics - Nils Gustaf Dalén
- Chemistry - Victor Grignard, Paul Sabatier
- Medicine - Alexis Carrel
- Literature - Gerhart Johann Robert Hauptmann
- Peace - Elihu Root Category:1912 ko:1912년 ms:1912 ja:1912年 simple:1912 th:พ.ศ. 2455

Atlantic Ocean

The Atlantic Ocean is Earth's second-largest ocean, covering approximately one-fifth of its surface. The ocean's name, derived from Greek mythology, means the "Sea of Atlas". This ocean occupies an elongated, S-shaped basin extending in a north-south direction and is divided into the North Atlantic and South Atlantic by equatorial counter currents at about 8° north latitude. Bounded by the Americas on the west and Europe and Africa on the east, the Atlantic is linked to the Pacific Ocean by the Arctic Ocean on the north and the Drake Passage on the south. An artificial connection between the Atlantic and Pacific is also provided by the Panama Canal. On the east, the dividing line between the Atlantic and the Indian Ocean is the 20° east meridian. The Atlantic is separated from the Arctic Ocean by a line from Greenland to northwestern Iceland and then from northeastern Iceland to southernmost tip of Spitsbergen and then to North Cape in northern Norway. Norway on a fair day.]] Covering approximately 20% of Earth's surface, the Atlantic Ocean is second only to the Pacific in size. With its adjacent seas it occupies an area of about 106,400,000 km² (41,100,000 square miles); without them, it has an area of 82,400,000 km² (31,800,000 mi²). The land area that drains into the Atlantic is four times that of either the Pacific or Indian oceans. The volume of the Atlantic Ocean with its adjacent seas is 354,700,000 km³ (85,100,000 mi³) and without them 323,600,000 km³ (77,640,000 mi³). The average depth of the Atlantic, with its adjacent seas, is 3,332 m (10,932 ft); without them it is 3,926 m (12,881 ft). The greatest depth, 8,605 m (28,232 ft), is in the Puerto Rico Trench. The width of the Atlantic varies from 2,848 km (1,770 miles) between Brazil and Liberia to about 4,830 km (3,000 miles) between the United States and northern Africa. The Atlantic Ocean has irregular coasts indented by numerous bays, gulfs, and seas. These include the Caribbean Sea, Gulf of Mexico, Gulf of St. Lawrence, Mediterranean Sea, Black Sea, North Sea, Labrador Sea, Baltic Sea, and Norwegian-Greenland Sea. Islands in the Atlantic Ocean include Faroe Islands, Greenland, Iceland, Rockall, Great Britain, Ireland, Fernando de Noronha, the Azores, the Madeira Islands, the Canaries, the Cape Verde Islands,Sao Tome e Principe, Newfoundland, Bermuda, the West Indies, Ascension, St. Helena, Trindade, Martin Vaz, Tristan da Cunha, the Falkland Islands, and South Georgia Island. South Georgia Island

Ocean bottom

The principal feature of the bottom topography of the Atlantic Ocean is a great submarine mountain range called the Mid-Atlantic Ridge. It extends from Iceland in the north to approximately 58° south latitude, reaching a maximum width of about 1,600 km (1,000 miles). A great rift valley also extends along the ridge over most of its length. The depth of water over the ridge is less than 2,700 m (8,900 ft) in most places, and several mountain peaks rise above the water, forming islands. The South Atlantic Ocean has an additional submarine ridge, the Walvis Ridge. The Mid-Atlantic Ridge separates the Atlantic Ocean into two large troughs with depths averaging between 3,700 and 5,500 m (12,000 and 18,000 ft). Transverse ridges running between the continents and the Mid-Atlantic Ridge divide the ocean floor into numerous basins. Some of the larger basins are the Guiana, North American, Cape Verde, and Canaries basins in the North Atlantic. The largest South Atlantic basins are the Angola, Cape, Argentina, and Brazil basins. The deep ocean floor is thought to be fairly flat, although numerous seamounts and some guyots exist. Several deeps or trenches are also found on the ocean floor. The Puerto Rico Trench, in the North Atlantic, is the deepest. The Laurentian Abyss is found off the eastern coast of Canada. In the south Atlantic, the South Sandwich Trench reaches a depth of 8,428 m (27,651 ft). A third major trench, the Romanche Trench, is located near the equator and reaches a depth of about 7,454 m (24,455 ft). The shelves along the margins of the continents constitute about 11% of the bottom topography. In addition, a number of deep channels cut across the continental rise. Ocean sediments are composed of terrigenous, pelagic, and authigenic material. Terrigenous deposits consist of sand, mud, and rock particles formed by erosion, weathering, and volcanic activity on land and then washed to sea. These materials are largely found on the continental shelves and are thickest off the mouths of large rivers or off desert coasts. Pelagic deposits, which contain the remains of organisms that sink to the ocean floor, include red clays and Globigerina, pteropod, and siliceous oozes. Covering most of the ocean floor and ranging in thickness from 60 m to 3,300 m (200 ft to 11,000 ft), they are thickest in the convergence belts and in the zones of upwelling. Authigenic deposits consist of such materials as manganese nodules. They occur where sedimentation proceeds slowly or where currents sort the deposits.

Water characteristics

sediment The salinity of the surface waters in the open ocean ranges from 33 to 37 parts per thousand by mass and varies with latitude and season. Although the minimum salinity values are found just north of the equator, in general the lowest values are in the high latitudes and along coasts where large rivers flow into the ocean. Maximum salinity values occur at about 25° north latitude. Surface salinity values are influenced by evaporation, precipitation, river inflow, and melting of sea ice. Surface water temperatures, which vary with latitude, current systems, and season and reflect the latitudinal distribution of solar energy, range from less than −2 °C to 29 °C (28 °F to 84 °F). Maximum temperatures occur north of the equator, and minimum values are found in the polar regions. In the middle latitudes, the area of maximum temperature variations, values may vary by 7 °C to 8 °C (13 °F to 15 °F). The Atlantic Ocean consists of four major water masses. The North and South Atlantic central waters constitute the surface waters. The sub-Antarctic intermediate water extends to depths of 1,000 m (3,300 ft). The North Atlantic deep water reaches depths of as much as 4,000 m (13,200 ft). The Antarctic bottom water occupies ocean basins at depths greater than 4,000 m (13,200 ft). Within the North Atlantic, ocean currents isolate a large elongated body of water known as the Sargasso Sea, in which the salinity is noticeably higher than average. The Sargasso Sea contains large amounts of seaweed, and is also the spawning ground for the European eel. Due to the Coriolis effect, water in the North Atlantic circulates in a clockwise direction, whereas water circulation in the South Atlantic is counter clockwise. The South tides in the Atlantic Ocean are semi-diurnal; that is, two high tides occur during each 24 lunar hours. The tides are a general wave that moves from south to north. In latitudes above 40° north some east-west oscillation occurs.

Climate

diurnal The climate of the Atlantic Ocean and adjacent land areas is influenced by the temperatures of the surface waters and water currents as well as the winds blowing across the waters. Because of the oceans' great capacity for retaining heat, maritime climates are moderate and free of extreme seasonal variations. Precipitation can be approximated from coastal weather data and air temperature from the water temperatures. The oceans are the major source of the atmospheric moisture that is obtained through evaporation. Climatic zones vary with latitude; the warmest climatic zones stretch across the Atlantic north of the equator. The coldest zones are in the high latitudes, with the coldest regions corresponding to the areas covered by sea ice. Ocean currents contribute to climatic control by transporting warm and cold waters to other regions. Adjacent land areas are affected by the winds that are cooled or warmed when blowing over these currents. The Gulf Stream, for example, warms the atmosphere of the British Isles and northwestern Europe, and the cold water currents contribute to heavy fog off the coast of northeastern Canada (the Grand Banks area) and the northwestern coast of Africa. In general, winds tend to transport moisture and warm or cool air over land areas. Hurricanes develop in the southern part of the North Atlantic Ocean.

History and economy

The Atlantic Ocean appears to be the second youngest of the world's oceans, after the Southern Ocean. Evidence indicates that it did not exist prior to 180 million years ago, when the continents that formed from the breakup of the ancestral supercontinent, Pangaea, were being rafted apart by the process of seafloor spreading. The Atlantic has been extensively explored since the earliest settlements were established along its shores. The Vikings, Portuguese, and Christopher Columbus were the most famous among its early explorers. After Columbus, European exploration rapidly accelerated, and many new trade routes were established. As a result, the Atlantic became and remains the major artery between Europe and the Americas (known as transatlantic trade). Numerous scientific explorations have been undertaken, including those by the German Meteor expedition, Columbia University's Lamont Geological Observatory, and the U.S. Navy Hydrographic Office. The ocean has also contributed significantly to the development and economy of the countries around it. Besides its major "transatlantic" transportation and communication routes, the Atlantic offers abundant petroleum deposits in the sedimentary rocks of the continental shelves and the world's richest fishing resources, especially in the waters covering the shelves. The major species of fish caught are cod, haddock, hake, herring, and mackerel. The most productive areas include the Grand Banks of Newfoundland, the shelf area off Nova Scotia, Georges Bank off Cape Cod, the Bahama Banks, the waters around Iceland, the Irish Sea, the Dogger Bank of the North Sea, and the Falkland Banks. Eel, lobster, and whales have also been taken in great quantities. All these factors, taken together, tremendously enhance the Atlantic's great commercial value. Because of the threats to the ocean environment presented by oil spills, marine debris, and the incineration of toxic wastes at sea, various international treaties exist to reduce some forms of pollution.
- In 1858, the first Transatlantic telegraph cable was laid by Cyrus Field.
- In 1919, the American NC-4 became the first airplane to cross the Atlantic (though it made a couple of landings on islands along the way).
- Later in 1919, a British airplane piloted by Alcock and Brown made the first non-stop transatlantic flight from Newfoundland to Ireland.
- In 1921, the British were the first to cross the North Atlantic in an airship.
- In 1922, the Portuguese were the first to cross the South Atlantic in an airship.
- The first transatlantic telephone call was made on January 7, 1927.
- In 1927, Charles Lindbergh made the first solo non-stop transatlantic flight in an airplane (between New York City and Paris).
- After rowing for 81 days and 2,962 miles, on December 3, 1999 Tori Murden became the first woman to cross the Atlantic Ocean by rowboat alone when she reached Guadeloupe from the Canary Islands. Location: body of water between Africa, Europe, the Southern Ocean, and the Americas Geographic coordinates: Map references: World Area:
- total: 76.762 million km²
- note: includes the Baltic Sea, Black Sea, Caribbean Sea, Davis Strait, Denmark Strait, part of the Drake Passage, Gulf of Mexico, Labrador Sea, Mediterranean Sea, North Sea, Norwegian Sea, almost all of the Scotia Sea, and other tributary water bodies Area - comparative: slightly less than 6.5 times the size of the US Coastline: 111,866 km Climate: Tropical cyclones (hurricanes) develop anywhere from off the coast of Africa near Cape Verde to the Windward Islands and move westward into the Caribbean Sea or up the east coast of North America; hurricanes can occur from May to December, but are most frequent from late July to early November. Storms are common in the North Atlantic during northern winters, making ocean crossings more difficult and dangerous.

Terrain

The surface is usually covered with sea ice in the Labrador Sea, Denmark Strait, and Baltic Sea from October to June. There is a clockwise warm-water gyre (broad, circular system of currents) in the northern Atlantic, and a counter-clockwise warm-water gyre in the southern Atlantic. The ocean floor is dominated by the Mid-Atlantic Ridge, a rugged north-south centerline for the entire Atlantic basin, first discovered by the Challenger Expedition.

Elevation extremes


- lowest point: Milwaukee Deep in the Puerto Rico Trench -8,605 m
- highest point: sea level 0 m

Natural resources

Petroleum and gas fields, fish, marine mammals (seals and whales), sand and gravel aggregates, placer deposits, polymetallic nodules, precious stones

Natural hazards

Icebergs are common in the Davis Strait, Denmark Strait, and the northwestern Atlantic Ocean from February to August and have been spotted as far south as Bermuda and the Madeira Islands. Ships are subject to superstructure icing in extreme northern Atlantic from October to May. Persistent fog can be a maritime hazard from May to September. So can hurricanes north of the equator (May to December). The Bermuda Triangle is popularly believed to be the site of numerous aviation and shipping incidents, due to unexplained and supposedly mysterious causes, but coastguard records do not support this belief.

Current environmental issues

Endangered marine species include the manatee, seals, sea lions, turtles, and whales. Drift net fishing is killing dolphins, albatrosses and other seabirds (petrels, auks), hastening the decline of fish stocks and contributing to international disputes. There is municipal sludge pollution off eastern US, southern Brazil, and eastern Argentina, oil pollution in the Caribbean Sea, Gulf of Mexico, Lake Maracaibo, Mediterranean Sea, and North Sea, and industrial waste and municipal sewage pollution in the Baltic Sea, North Sea, and Mediterranean Sea.

Notes on geography

Major chokepoints include the Strait of Gibraltar and the Panama Canal; strategic straits include the Strait of Dover, Straits of Florida, Mona Passage, The Sound (Oresund), and Windward Passage; the Equator divides the Atlantic Ocean into the North Atlantic Ocean and South Atlantic Ocean (previously known as the Ethiopic Ocean). During the Cold War the so called Greenland-Iceland-UK (GIUK) Gap was a major strategic concern, the seabed in that area was laid with extensive hydrophone systems to track Soviet submarines.

Ports and harbours


- A Coruña (Spain)
- Abidjan (Côte d'Ivoire)
- Accra (Ghana)
- Amsterdam (Netherlands)
- Antwerp (Belgium)
- Bahia Blanca (Argentina)
- Baltimore (US)
- Banjul (The Gambia)
- Belfast (Northern Ireland)
- Bergen (Norway)
- Bissau (Guinea-Bissau)
- Bodø (Norway)
- Bordeaux (France)
- Boston (US)
- Bremen (Germany)
- Brest (France)
- Bristol (England)
- Cadiz (Spain)
- Cape Town (South Africa)
- Casablanca (Morocco)
- Cayenne (French Guiana)
- Charleston (US)
- Cherbourg (France)
- Conakry (Guinea)
- Cork (Republic of Ireland)
- Cotonou (Benin)
- Dakar (Senegal)
- Douala (Cameroon)
- Dublin (Republic of Ireland)
- Dunkirk (France)
- Edinburgh (Scotland)
- Fortaleza (Brazil)
- Georgetown (Guyana)
- Glasgow (Scotland)
- Gothenburg(Sweden)
- Hamburg (Germany)
- Halifax (Canada)
- Jacksonville (US)
- Lagos (Nigeria)
- Las Palmas (Spain)
- Le Havre (France)
- Libreville (Gabon)
- Lisbon (Portugal)
- Liverpool (England)
- Lomé (Togo)
- London (England)
- Luanda (Angola)
- Maceió (Brazil)
- Malabo (Equatorial Guinea)
- Miami (US)
- Monrovia (Liberia)
- Montréal (Canada)
- Morehead City (US)
- Nantes (France)
- Nantucket (US)
- Narvik (Norway)
- New Haven (US)
- New London (US)
- New York (US)
- Newcastle upon Tyne (England)
- Newport News (US)
- Norfolk (US)
- Nouakchott (Mauritania)
- Oslo (Norway)
- Ostend (Belgium)
- Paramaribo (Suriname)
- Philadelphia (US)
- Port Harcourt (Nigeria)
- Portland (US)
- Porto (Portugal)
- Porto-Novo (Benin)
- Portsmouth (England)
- Portsmouth (US)
- Providence (US)
- Puerto Cortes (Honduras)
- Québec (Canada)
- Rabat (Morocco)
- Recife (Brazil)
- Reykjavík (Iceland)
- Rio de Janeiro (Brazil)
- Rotterdam (Netherlands)
- Salvador (Brazil)
- Saint-Nazaire (France)
- Santa Cruz de Tenerife (Spain)
- Santander (Spain)
- Santos (Brazil)
- Savannah (US)
- Seville (Spain)
- Saint John (Canada)
- St. John's (Canada)
- Southampton (England)
- Stavanger (Norway)
- Tangier (Morocco)
- Tromsø (Norway)
- Trondheim (Norway)
- Vigo (Spain)
- Vitória (Brazil)
- Walvis Bay (Namibia)
- Wilmington (US)
- Yarmouth (Canada)
- Ålesund (Norway)

Note on transportation

The Saint Lawrence Seaway is an important waterway.

References


- Much of this article comes from the public domain site http://oceanographer.navy.mil/atlantic.html (dead link). It is now accessible from the Internet Archive at http://web.archive.org/web/20020221215514/http%3a//oceanographer.navy.mil/atlantic.html.
  - Disclaimers for this website, including its status as a public domain resource, are recorded on the Internet Archive at http://web.archive.org/web/20020212021049/http%3a//oceanographer.navy.mil/warning.html.

External links


- [http://dapper.pmel.noaa.gov/dchart/ NOAA In-situ Ocean Data Viewer] Plot and download ocean observations
- [http://www.cia.gov/cia/publications/factbook/geos/zh.html CIA – The World Factbook – Atlantic Ocean] Category:Atlantic Ocean Category:Oceans als:Atlantik zh-min-nan:Tāi-se-iûⁿ ko:대서양 ja:大西洋 simple:Atlantic Ocean th:มหาสมุทรแอตแลนติก

Francis Bacon

Francis Bacon, 1st Viscount St Albans, KC (22 January 1561 – 9 April 1626) was an English philosopher, statesman, spy, freemason and essayist. He was knighted in 1603, created Baron Verulam in 1618, and created Viscount St Albans in 1621; both peerage titles becoming extinct upon his death. He began his professional life as a lawyer, but he has become best known as a philosophical advocate and defender of the scientific revolution. His works establish and popularize an inductive methodology for scientific inquiry, often called the Baconian method. Induction implies drawing knowledge from the natural world through experimentation, observation, and testing of hypotheses. In the context of his time, such methods were connected with the occult trends of hermeticism and alchemy.

Early life

Francis Bacon was born at York House Strand, London. He was the youngest of five sons of Sir Nicholas Bacon, Lord Keeper of the Great Seal under Elizabeth I. His mother, Ann Cooke Bacon was the second wife of Sir Nicholas, a member of the Reformed or Puritan Church, and a daughter of Sir Anthony Cooke, whose sister married William Cecil, Lord Burghley, the great minister of Queen Elizabeth. Biographers believe that Bacon received an education at home in his early years, and that his health during that time, as later, was delicate. He entered Trinity College, Cambridge, in 1573 at the age of 12, living for three years there with his older brother Anthony Bacon. At Cambridge he first met the Queen, who was impressed by his precocious intellect, and was accustomed to call him "the young Lord Keeper." Here also his studies of science brought him to the conclusion that the methods (and thus the results) were erroneous. His reverence for Aristotle conflicted with his dislike of Aristotelian philosophy, which seemed barren, disputatious, and wrong in its objectives. On June 27, 1576, he and Anthony were entered de societate magistrorum at Gray's Inn, and a few months later they went abroad with Sir Amias Paulet, the English ambassador at Paris. The disturbed state of government and society in France under Henry III afforded him valuable political instruction. The sudden death of his father in February 1579 necessitated Bacon's return to England, and seriously influenced his fortunes. Sir Nicholas had laid up a considerable sum of money to purchase an estate for his youngest son, but he died before doing so, and Francis was left with only a fifth of that money. Having started with insufficient means, he borrowed money and became habitually in debt. To support himself, he took up his residence in law at Gray's Inn in 1579.

Career

Gray's Inn In the fragment De Interpretatione Naturae Prooemium (written probably about 1603) Bacon analyses his own mental character and establishes his goals, which were threefold: discovery of truth, service to his country, and service to the church. Knowing that a prestigious post would aid him toward these ends, in 1580 he applied, through his uncle, Lord Burghley, for some post at court which might enable him to devote himself to a life of learning. His application failed, and for the next two years he worked quietly at Gray's Inn giving himself seriously to the study of law, until admitted as an outer barrister in 1582. In 1584 he took his seat in parliament for Melcombe in Dorset, and subsequently for Taunton (1586). He wrote on the condition of parties in the church, and he set down his thoughts on philosophical reform in the lost tract, Temporis Partus Maximus, but he failed to obtain a position of the kind he thought necessary for success. In the Parliament of 1586 he took a prominent part in urging the execution of Mary Queen of Scots. About this time he seems again to have approached his powerful uncle, the result of which may possibly be traced in his rapid progress at the Bar, and in his receiving, in 1589, the reversion to the Clerkship of the Star Chamber, a valuable appointment, the enjoyment of which, however, he did not enter into until 1608. During this period Bacon became acquainted with Robert Devereux, 2nd Earl of Essex (1567-1601), Queen Elizabeth's favourite. By 1591 he was acting as the earl's confidential adviser. Bacon took his seat for Middlesex when in February 1593 Elizabeth called a Parliament to investigate a Catholic plot against her. His opposition to a bill that would levy triple subsidies in half the usual time (he objected to the time span) offended many people; he was accused of seeking popularity, and was for a time excluded from the court. When the Attorney-Generalship fell vacant in 1594 and Bacon became a candidate for the office, Lord Essex's influence could not secure him the position; in fashion, Bacon failed to become solicitor in 1595. To console him for these disappointments Essex presented him with a property at Twickenham, which he subsequently sold for £1800, equivalent to a much larger sum now. 1595] In 1596 he was made a Queen's Counsel, but missed the appointment of Master of the Rolls. During the next few years, his financial situation remained bad. His friends could find no public office for him, a scheme for retrieving his position by a marriage with the wealthy widow Lady Elizabeth Hatton failed, and in 1598 he was arrested for debt. His standing in the queen's eyes, however, was beginning to improve. She had begun to employ him in crown affairs a few years previously, and he gradually acquired the standing of one of the learned counsel, though he had no commission or warrant and received no salary. His relationship with the queen also improved when he severed ties with Essex, a fortunate move considering that the latter would be executed for treason in 1601; and Bacon was one of those appointed to investigate the charges against him, and examine witnesses, in connection with which he showed an ungrateful and indecent eagerness in pressing the case against his former friend and benefactor. This act Bacon endeavoured to justify in A Declaration of the Practices and Treasons, etc., of ... the Earl of Essex, etc. He received a gift of a fine of £1200 on one of Essex's accomplices. The accession of James I brought Bacon into greater favour; he was knighted in 1603, and endeavoured to set himself right with the new powers by writing his Apologie (defence) of his proceedings in the case of Essex, who had favoured the succession of James. In the course of the uneventful first parliament session Bacon married Alice Barnham, the daughter of a well-connected London alderman. Little or nothing is known of their married life. In his last will he disinherited her. However, substantial evidence suggests that Bacon's emotional interests lay elsewhere. John Aubrey in his Brief Lives states that Bacon was "a pederast". Bacon's fellow parliamentary member Sir Simonds D'Ewes in his Autobiography and Correspondence writes of Bacon: "yet would he not relinquish the practice of his most horrible & secret sinne of sodomie, keeping still one Godrick, a verie effeminate faced youth, to bee his catamite and bedfellow". Bacon's mother Lady Ann Bacon expressed clear exasperation with what she believed was her son's behaviour. In a letter to her other son Anthony, she complains of another of Francis's companions "that bloody Percy" whom, she writes, he kept "yea as a coach companion and a bed companion". Bacon exhibited a strong penchant for young Welsh serving-men. One such person, Francis Edney, received the enormous sum of two hundred pounds in Bacon's will. Meanwhile (in 1608), he had entered upon the Clerkship of the Star Chamber, and was in the enjoyment of a large income; but old debts and present extravagance kept him embarrassed, and he endeavoured to obtain further promotion and wealth by supporting the king in his arbitrary policy. However, Bacon's services were rewarded in June 1607 with the office of Solicitor. In 1610 the famous fourth parliament of James met. Despite Bacon's advice to him, James and the Commons found themselves frequently at odds over royal prerogatives and the king's embarrassing extravagance, and the House was dissolved in February 1611. Through this Bacon managed in frequent debate to uphold the prerogative, while retaining the confidence of the Commons. In 1613, Bacon was finally able to become attorney-general, by dint of advising the king to shuffle judicial appointments; and in this capacity he would prosecute Somerset in 1616. The parliament of April 1614 objected to Bacon's presence in the seat for Cambridge—he was allowed to stay, but a law was passed that forbade the attorney-general to sit in parliament—and to the various royal plans which Bacon had supported. His obvious influence over the king inspired resentment or apprehension in many of his peers. Bacon continued to receive the King's favor, and in 1618 was appointed by James to the position of Lord Chancellor. In his great office B. showed a failure of character in striking contrast with the majesty of his intellect. He was corrupt alike politically and judicially, and now the hour of retribution arrived. His public career ended in disgrace in 1621 when, after having fallen into debt, a Parliamentary Committee on the administration of the law charged him with corruption under 23 counts; and so clear was the evidence that he made no attempt at defence. To the lords, who sent a committee to inquire whether the confession was really his, he replied, "My lords, it is my act, my hand, and my heart; I beseech your lordships to be merciful to a broken reed." He was sentenced to a fine of £40,000, remitted by the king, to be committed to the Tower during the king's pleasure (which was that he should be released in a few days), and to be incapable of holding office or sitting in parliament. He narrowly escaped being deprived of his titles. Thenceforth he devoted himself to study and writing. However, Nieves Mathews in her book, Francis Bacon: The History of a Character Assassination, Yale University Press, alleges that Bacon was completely innocent of the bribery charges and that writers from later times were themselves guilty of slandering Bacon's reputation. Bacon commenting on his impeachment as Chancellor in which he claims to have been forced to plead guilty to bribery charges in order to save King James from a political scandal stated:
I was the justest judge, that was in England these last fifty years. When the book of all hearts is opened, I trust I shall not be found to have the troubled fountain of a corrupt heart. I know I have clean hands and a clean heart. I am as innocent of bribes as any born on St. Innocents Day.

Death

Lord Chancellor]] Francis Bacon's death had a considerable element of irony. In March, 1626, he came to London, and shortly after, when driving on a snowy day, he was inspired by the possibility of using snow to preserve meat. Bacon purchased a chicken (fowl) to investigate this possibility, but, during the endeavour of stuffing it with snow, contracted a fatal case of pneumonia. He died at Highgate on April 9, 1626, leaving assets of about £7,000 and debts to the amount of £22,000.

Works and Philosophy

Bacon's works include his Essays, as well as the Colours of Good and Evil and the Meditationes Sacrae, all published in 1597. His famous aphorism, "knowledge is power", is found in the Meditations. Bacon also wrote In felicem memoriam Elizabethae, a eulogy for the queen written in 1609; and various philosophical works which constitute the fragmentary and incomplete Instauratio magna, the most important part of which is the Novum Organum (published 1620). Bacon did not propose an actual philosophy, but rather a method of developing philosophy; he wrote that, whilst philosophy at the time used the deductive syllogism to interpret nature, the philosopher should instead proceed through inductive reasoning from fact to axiom to law. Before beginning this induction, the inquirer is to free his mind from certain false notions or tendencies which distort the truth. These are called "Idols" (idola), and are of four kinds: "Idols of the Tribe" (idola tribus), which are common to the race; "Idols of the Den" (idola specus), which are peculiar to the individual; "Idols of the Marketplace" (idola fori), coming from the misuse of language; and "Idols of the Theater" (idola theatri), which result from an abuse of authority. The end of induction is the discovery of forms, the ways in which natural phenomena occur, the causes from which they proceed. Bacon's developments of the inductive philosophy would revolutionize the future thought of the human race. Bacon's somewhat fragmentary ethical system, derived through use of his methods, is explicated in the seventh and eighth books of his De augmentis scientiarum (1623). He distinguishes between duty to the community, an ethical matter, and duty to God, a purely religious matter. Any moral action is the action of the human will, which is governed by reason and spurred on by the passions; habit is what aids men in directing their will toward the good. No universal rules can be made, as both situations and men's characters differ. Bacon distinctly separated religion and philosophy, though the two can coexist. Where philosophy is based on reason, faith is based on revelation, and therefore irrational—in De augmentis he writes that "[t]he more discordant, therefore, and incredible, the divine mystery is, the more honor is shown to God in believing it, and the nobler is the victory of faith."

Posthumous reputation

Bacon's ideas about the improvement of the human lot were influential in the 1740s and 1750s among a number of Parliamentarian scholars. In the Restoration Bacon was commonly invoked as a guiding spirit of the new-founded Royal Society. In the nineteenth century his emphasis on induction was revived and developed by William Whewell, among others. Bacon was ranked #90 on Michael H. Hart's list of the most influential figures in history.

Bacon and Shakespeare

Since the nineteenth century a number of writers have extended Bacon's acknowledged body of work by claiming that Bacon was the author of the plays usually attributed to William Shakespeare. There is evidence for this via Bacon's Shakespeare notebook, The Promus, and The Northumberland Manuscript. See: Shakespearean authorship.

Summary

ImageSize = width:450 height:450 PlotArea = left:50 right:0 bottom:10 top:10 DateFormat = yyyy Period = from:1560 till:1630 TimeAxis = orientation:vertical ScaleMajor = unit:year increment:5 start:1560 ScaleMinor = unit:year increment:1 start:1560 PlotData= color:red mark:(line,black) align:left fontsize:S shift:(25,0) # shift text to right side of bar # there is no automatic collision detection, # so shift texts up or down manually to avoid overlap shift:(25,-10) at:1561 text:Born at London at:1573 fontsize:XS text:Ed. at Trinity Coll. Cambridge; dissatisfied with Aristotlean philosophy at:1579 text:Enters Gray's Inn from:1576 till:1579 text:In France at:1582 text:Called to Bar at:1584 text:Enters Parliament at:1591 text:Becomes friend of Essex at:1593 text:Essex presents him with estate at:1597 text:Publishes first ed of Essays at:1601 text:Prosecutes Essex at:1605 text:Publishes Advancement of Learning at:1607 text:Solicitor General at:1609 text:Publishes Wisdom of the Ancients at:1613 text:Attorney General at:1616 text:Prosecutes Somerset at:1618 fontsize:XS text:Lord Keeper at:1619 fontsize:XS text:Lord Chancellor with title of Verulam at:1620 fontsize:XS text:Publishes Novum Organum at:1621 fontsize:XS text:Viscount St. Albans; Charged with corruption, retires from public life. at:1622 fontsize:XS text:Publishes Henry VII and third part of Instauratio at:1626 text:Dies

Notes

# Bacon's sexual orientation is discussed in detail at the website [http://www.infopt.demon.co.uk/baconfra.htm Gay History and Literature].

References


-
-
- Some material originally from the 1911 Schaff-Herzog Encyclopedia of Religion.

External links


-
- [http://www.classic-literature.co.uk/british-authors/16th-century/francis-bacon/ Francis Bacon Books]
- [http://etext.library.adelaide.edu.au/aut/bacon_francis.html Online editions of Bacon's works]
- [http://www.sirbacon.org/ Sir Francis Bacon's New Advancement of Learning]
- [http://www.hirohurl.net/engren.html Essays on the English Renaissance]
- [http://etext.lib.virginia.edu/cgi-local/DHI/dhi.cgi?id=dv1-25 Dictionary of the History of Ideas:] Baconianism
- [http://www.infopt.demon.co.uk/baconfra.htm Rictor Norton, "Sir Francis Bacon"] quotes excised passages of Sir Simonds D'Ewes
- [http://www.quotationsbook.com/authors/377/Bacon_Francis Quotations Book - Francis Bacon]
- [http://plato.stanford.edu/entries/francis-bacon/ Stanford Encyclopedia of Philosophy entry]
- [http://www.twickenham-museum.org.uk/detail.asp?ContentID=184 The Twickenham Museum - Sir Francis Bacon]
- [http://www.henrywotton.org.uk/ Henry Wotton employed by Bacon's intelligence system]
- [http://www.fbrt.org.uk/frameset.html Francis Bacon Research Trust - Studies of Bacon's connections to the Rosicrucians, Freemasonry, Shakespeare]
- [http://http://nrg78.com/ipw-web/b2/index.php?m=20051017#108 - For knowledge itself is power: a blog post that compares Bacon to Machiavelli.] Bacon, Francis Bacon, Francis Bacon, Francis Bacon, Francis Bacon, Francis Bacon, Francis Category:Empiricists Bacon, Francis Bacon, Francis Bacon, Francis Bacon, Francis Bacon, Francis Bacon, Francis St Albans, Viscount 01-001 ko:프랜시스 베이컨 ja:フランシス・ベーコン (哲学者)

Fossil

:For other uses of the term, see Fossil (disambiguation) Fossil (disambiguation)] Fossils are the mineralized or otherwise preserved remains -- or other traces (such as footprints) -- of animals, plants, and other organisms. The totality of fossils and their placement in fossiliferous (fossil-containing) rock formations and sedimentary layers (strata) is known as the fossil record. The study of fossils is called paleontology. The word fossil is derived from the Latin word fossus, which means "having been dug up". Latin Fossilization is actually a rare occurrence because natural materials tend to decompose. In order for an organism to be fossilized, the remains normally need to be covered by sediment as soon as possible. However there are exceptions to this, such as if an organism becomes petrified or comes to rest in an anoxic environment such as at the bottom of a lake. There are several different types of fossils and fossilization processes. Fossils usually consist of traces of the remains of the organism itself. However, fossils may also consist of the marks left behind by the organism while it was alive, such as the footprint or feces of a dinosaur or reptile. These types of fossil are called trace fossils, as opposed to body fossils. Finally, past life leaves some evidences that cannot be seen but can be detected in the form of chemical signals; these are known as chemical fossils (for lack of a better term). trace fossil The oldest known structured fossils are most likely stromatolites. Now understood to be formed by the entrapment of minerals by mucous-like sheets of cyanobacteria, the oldest of these formations dates from 3.5 billion years ago. Even older deposits (3.8 billion years old) of heavy carbon that are indicative of even earlier life are currently proposed as the remains of the earliest known life on Earth.

Permineralization