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H. Lyman Saÿen
H. Lyman Saÿen (sometimes also spelled Sayen) was an American pioneer in the design of x-ray tubes who also distinguished himself as an abstract artist. Biography Early years Saÿen was born in Philadelphia on 25 April 1875 to Edward M. Saÿen and Annie T. Saÿen (née Thomas). Soon after graduating from Central Manual Training School in 1891, he went to work for James W. Queen & Company, a large manufacturer of scientific equipment. He distinguished himself at the age of 18 by designing a large induction coil that was cited at the World's Columbian Exposition of 1893. In 1897 he received a patent for a self-regulating x-ray tube. This tube was the first of its kind to solve the problem of an unstable output caused by a drop in tube gas pressure. At the outbreak of the Spanish–American War, he volunteered for military service and was assigned to Fort McPherson, Georgia where he was put in charge of the medical x-ray laboratory. After contracting typhoid fever he was di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Philadelphia, Pennsylvania
Philadelphia, often called Philly, is the largest city in the Commonwealth of Pennsylvania, the sixth-largest city in the U.S., the second-largest city in both the Northeast megalopolis and Mid-Atlantic regions after New York City. Since 1854, the city has been coextensive with Philadelphia County, the most populous county in Pennsylvania and the urban core of the Delaware Valley, the nation's seventh-largest and one of world's largest metropolitan regions, with 6.245 million residents . The city's population at the 2020 census was 1,603,797, and over 56 million people live within of Philadelphia. Philadelphia was founded in 1682 by William Penn, an English Quaker. The city served as capital of the Pennsylvania Colony during the British colonial era and went on to play a historic and vital role as the central meeting place for the nation's founding fathers whose plans and actions in Philadelphia ultimately inspired the American Revolution and the nation's inde ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Henri Matisse
Henri Émile Benoît Matisse (; 31 December 1869 – 3 November 1954) was a French visual artist, known for both his use of colour and his fluid and original draughtsmanship. He was a draughtsman, printmaker, and sculptor, but is known primarily as a painter. Matisse is commonly regarded, along with Pablo Picasso, as one of the artists who best helped to define the revolutionary developments in the visual arts throughout the opening decades of the twentieth century, responsible for significant developments in painting and sculpture. The intense colourism of the works he painted between 1900 and 1905 brought him notoriety as one of the Fauves ( French for "wild beasts"). Many of his finest works were created in the decade or so after 1906, when he developed a rigorous style that emphasised flattened forms and decorative pattern. In 1917, he relocated to a suburb of Nice on the French Riviera, and the more relaxed style of his work during the 1920s gained him critical acclaim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
President Wilson
Thomas Woodrow Wilson (December 28, 1856February 3, 1924) was an American politician and academic who served as the 28th president of the United States from 1913 to 1921. A member of the Democratic Party, Wilson served as the president of Princeton University and as the governor of New Jersey before winning the 1912 presidential election. As president, Wilson changed the nation's economic policies and led the United States into World War I in 1917. He was the leading architect of the League of Nations, and his progressive stance on foreign policy came to be known as Wilsonianism. Wilson grew up in the American South, mainly in Augusta, Georgia, during the Civil War and Reconstruction. After earning a Ph.D. in political science from Johns Hopkins University, Wilson taught at various colleges before becoming the president of Princeton University and a spokesman for progressivism in higher education. As governor of New Jersey from 1911 to 1913, Wilson broke with party bosses ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Theodore Roosevelt
Theodore Roosevelt Jr. ( ; October 27, 1858 – January 6, 1919), often referred to as Teddy or by his initials, T. R., was an American politician, statesman, soldier, conservationist, naturalist, historian, and writer who served as the 26th president of the United States from 1901 to 1909. He previously served as the 25th vice president of the United States, vice president under President William McKinley from March to September 1901 and as the 33rd governor of New York from 1899 to 1900. Assuming the presidency after Assassination of William McKinley, McKinley's assassination, Roosevelt emerged as a leader of the History of the Republican Party (United States), Republican Party and became a driving force for United States antitrust law, anti-trust and Progressive Era, Progressive policies. A sickly child with debilitating asthma, he overcame his health problems as he grew by embracing The Strenuous Life, a strenuous lifestyle. Roosevelt integrated his exuberant personalit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ft McPherson
Fort McPherson was a U.S. Army military base located in Atlanta, Georgia, bordering the northern edge of the city of East Point, Georgia. It was the headquarters for the U.S. Army Installation Management Command, Southeast Region; the U.S. Army Forces Command; the U.S. Army Reserve Command; the U.S. Army Central. Situated on and located four miles (6 km) southwest of the center of Atlanta, Fort McPherson is rich in military tradition as an army post dating back to 1867. It was during that year that a post was established in west Atlanta on the grounds where Spelman College is now located. Between the years 1867 and 1881, the post was garrisoned in turn by elements of the 2nd, 16th and 18th U.S. Infantry Regiments and the 5th Artillery. Their mission was to enforce U.S. regulations during the reconstruction period following the Civil War. Named after Major General James Birdseye McPherson, the fort was founded by the U.S. Army in September 1867. During the Recon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spanish–American War
, partof = the Philippine Revolution, the decolonization of the Americas, and the Cuban War of Independence , image = Collage infobox for Spanish-American War.jpg , image_size = 300px , caption = (clockwise from top left) , date = April 21 – August 13, 1898() , place = , casus = , result = American victory *Treaty of Paris (1898), Treaty of Paris of 1898 *Founding of the First Philippine Republic and beginning of the Philippine–American War * German–Spanish Treaty (1899), Spain sells to Germany the last colonies in the Pacific in 1899 and end of the Spanish Empire in Spanish colonization of the Americas, America and Asia. , territory = Spain relinquishes sovereignty over Cuba; cedes Puerto Rico, Guam and the Philippine Islands to the United States. $20 million paid to Spain by the United States for infrastructure owned by Spain. , combatant1 = United State ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Henry Lyman Sayen Ambulance
Henry may refer to: People *Henry (given name) * Henry (surname) * Henry Lau, Canadian singer and musician who performs under the mononym Henry Royalty * Portuguese royalty ** King-Cardinal Henry, King of Portugal ** Henry, Count of Portugal, Henry of Burgundy, Count of Portugal (father of Portugal's first king) ** Prince Henry the Navigator, Infante of Portugal ** Infante Henrique, Duke of Coimbra (born 1949), the sixth in line to Portuguese throne * King of Germany **Henry the Fowler (876–936), first king of Germany * King of Scots (in name, at least) ** Henry Stuart, Lord Darnley (1545/6–1567), consort of Mary, queen of Scots ** Henry Benedict Stuart, the 'Cardinal Duke of York', brother of Bonnie Prince Charlie, who was hailed by Jacobites as Henry IX * Four kings of Castile: ** Henry I of Castile ** Henry II of Castile ** Henry III of Castile ** Henry IV of Castile * Five kings of France, spelt ''Henri'' in Modern French since the Renaissance to italianize the na ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Potash
Potash () includes various mined and manufactured salts that contain potassium in water-soluble form.Potash USGS 2008 Minerals Yearbook The name derives from ''pot ash'', plant ashes or soaked in water in a pot, the primary means of manufacturing potash before the . The word '''' is derived from ''potash''. Potash is produced worldwide in amounts exceeding 90 million |
Cathode
A cathode is the electrode from which a conventional current leaves a polarized electrical device. This definition can be recalled by using the mnemonic ''CCD'' for ''Cathode Current Departs''. A conventional current describes the direction in which positive charges move. Electrons have a negative electrical charge, so the movement of electrons is opposite to that of the conventional current flow. Consequently, the mnemonic ''cathode current departs'' also means that electrons flow ''into'' the device's cathode from the external circuit. For example, the end of a household battery marked with a + (plus) is the cathode. The electrode through which conventional current flows the other way, into the device, is termed an anode. Charge flow Conventional current flows from cathode to anode outside of the cell or device (with electrons moving in the opposite direction), regardless of the cell or device type and operating mode. Cathode polarity with respect to the anode can be positive ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Queen Self-Regulating X-Ray Tube Operating Properly
Queen or QUEEN may refer to: Monarchy * Queen regnant, a female monarch of a Kingdom ** List of queens regnant * Queen consort, the wife of a reigning king * Queen dowager, the widow of a king * Queen mother, a queen dowager who is the mother of a reigning monarch Arts and entertainment Fictional characters * Queen (Marvel Comics), Adrianna "Ana" Soria * Evil Queen, from ''Snow White'' * Red Queen (''Through the Looking-Glass'') * Queen of Hearts (''Alice's Adventures in Wonderland'') Gaming * Queen (chess), a chess piece * Queen (playing card), a playing card with a picture of a woman on it * Queen (carrom), a piece in carrom Music * Queen (band), a British rock band ** ''Queen'' (Queen album), 1973 * ''Queen'' (Kaya album), 2011 * ''Queen'' (Nicki Minaj album), 2018 * ''Queen'' (Ten Walls album), 2017 * "Queen", a song by Estelle from the 2018 album ''Lovers Rock'' * "Queen", a song by G Flip featuring Mxmtoon, 2020 * "Queen", a song by Jessie J from t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Queen Self Regulating X-ray Tube
Queen or QUEEN may refer to: Monarchy * Queen regnant, a female monarch of a Kingdom ** List of queens regnant * Queen consort, the wife of a reigning king * Queen dowager, the widow of a king * Queen mother, a queen dowager who is the mother of a reigning monarch Arts and entertainment Fictional characters * Queen (Marvel Comics), Adrianna "Ana" Soria * Evil Queen, from ''Snow White'' * Red Queen (''Through the Looking-Glass'') * Queen of Hearts (''Alice's Adventures in Wonderland'') Gaming * Queen (chess), a chess piece * Queen (playing card), a playing card with a picture of a woman on it * Queen (carrom), a piece in carrom Music * Queen (band), a British rock band ** ''Queen'' (Queen album), 1973 * ''Queen'' (Kaya album), 2011 * ''Queen'' (Nicki Minaj album), 2018 * ''Queen'' (Ten Walls album), 2017 * "Queen", a song by Estelle from the 2018 album ''Lovers Rock'' * "Queen", a song by G Flip featuring Mxmtoon, 2020 * "Queen", a song by Jessie J from t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Philadelphia Sketch Club
The Philadelphia Sketch Club, founded on November 20, 1860, in Philadelphia, Pennsylvania, is one of America's oldest artists' clubs. The club's own web page proclaims it ''the'' oldest. Prominent members have included Joseph Pennell, Thomas Eakins, A.B. Frost, Howard Chandler Christy, and N.C. Wyeth. The club's mission is "to provide a community for visual artists, appreciation of the visual arts and visual arts education." The club's low-cost workshops and competitions are open to the public. All interested artists are invited to apply for membership. The club's activities are sustained by gifts from members, friends and nearly 20 major foundations, corporations and historical organizations. The club has held shows and exhibitions since its founding. Medal winners from the club's shows include Violet Oakley, John Folinsbee and Betty Bowes. In April 2008, the club held its 145th Annual Exhibition of Small Oil Paintings at the club's main gallery. The club's art collection ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
