Anders Jonas Ångström life story in berif

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Anders Jonas Ångström life story in berif





Anders Jonas Ångström
,  (conceived Aug. 13, 1814, Lögdö, Swed.—passed on June 21, 1874, Uppsala), Swedish physicist, an originator of spectroscopy for whom the angstrom, an unit of length equivalent to 10-10 meter, was named.

Instructed at the College of Uppsala, Ångström got to be privatdocent (instructor) there in 1839 and succeeded to the chairmanship of the material science division in 1858. In 1843 he got to be eyewitness at Uppsala Observatory.

Ångström's most vital work concerned hotness conduction and spectroscopy. He formulated a system for measuring warm conductivity, demonstrating to it to be relative to electrical conductivity. In 1853 he brought up that the electric flash yields two superposed spectra, one from the metal of the anode and the other from the gas through which it passes. From Euler's reverberation hypothesis Ångström found a rule of range examination: that a brilliant gas discharges beams of the same refrangibility as those it can retain.

Ångström's investigations of the sun based range prompted his disclosure, affirmed in 1862, that hydrogen is available in the Sun's climate. In 1868 was distributed his extraordinary guide of the typical sun powered range, which since quite a while ago stayed legitimate. He was the initially, in 1867, to analyze the range of the Aurora Borealis and to discover and measure the trademark splendid line in its yellow-green district, however he was mixed up in assuming that this same line is likewise to be seen in the zodiacal light.

Ångström's child Knut Johan Ångström was additionally a physicist who worked in spectroscopy and taught at the C

full A History of New York



 full  A History of New York from the Beginning of the World to the End of the Dutch Dynasty, by Diedrich Knickerbocker 
a satirical history by Washington Irving, published in 1809 and revised in 1812, 1819, and 1848. Originally intended as a burlesque of historiography and heroic styles of epic poetry, the work became more serious as the author proceeded.
Diedrich Knickerbocker, the putative narrator, begins with a mock-pedantic cosmogony and proceeds to a history of New Netherlands, often ignoring or altering facts. Descriptions of early New Amsterdam landmarks and old Dutch-American legends are included in the history, as are the discovery of America, the voyage of Henry Hudson, the founding of New Amsterdam, the “golden reign” of Governor Wouter van Twiller, and the hostility of the British, who were based in nearby Connecticut. The book's portrait of the overeducated, belligerent governor William the Testy (Willem Kieft) is actually a Federalist satire of Thomas Jefferson. The history concludes with the rule of Peter the Headstrong (Peter Stuyvesant) and the fall of New Amsterdam to the British in 1664.


Titanic luxury passenger ship All about

English: RMS Olympic and RMS Titanic under con...



Titanic  luxury passenger ship All about


in full   

Royal Mail Ship (RMS) Titanic 
  • The Titanic.
British luxury passenger liner that sank on April 14–15, 1912, during its maiden voyage, en route to New York City from Southampton, England, killing about 1,500 (see Researcher's Note: Titanic) passengers and ship personnel. One of the most famous tragedies in modern history, it has inspired numerous stories, several films, and a musical and been the subject of much scholarship and scientific speculation.
 

Origins and construction

  • J. Bruce Ismay.
In the early 1900s the transatlantic passenger trade was highly profitable and competitive, with ship lines vying to transport wealthy travelers and immigrants. Two of the chief lines were White Star and Cunard. By the summer of 1907, Cunard seemed poised to increase its share of the market with the debut of two new ships, the Lusitania and the Mauretania, which were scheduled to enter service later that year. The two passenger liners were garnering much attention for their expected speed; both would later set speed records crossing the Atlantic Ocean. Looking to answer his rival, White Star chairman J. Bruce Ismay reportedly met with William Pirrie, who controlled the Belfast shipbuilding firm Harland and Wolff, which constructed most of White Star's vessels. The two men devised a plan to build a class of large liners that would be known for their comfort instead of their speed. It was eventually decided that three vessels would be constructed: the Olympic, the Titanic, and the Britannic.
 
  • Construction of the Olympic (right) and the Titanic in the shipyard …
On March 31, 1909, some three months after work began on the Olympic, the keel was laid for the Titanic. The two ships were built side by side in a specially constructed gantry that could accommodate their unprecedented size. The sister ships were largely designed by Thomas Andrews of Harland and Wolff. In addition to ornate decorations, the Titanicfeatured an immense first-class dining saloon, four elevators, and a swimming pool. Its second-class accommodations were comparable to first-class features on other ships, and its third-class offerings, although modest, were still noted for their relative comfort.As to safety elements, the Titanichad 16 compartments that included doors which could be closed from the bridge, so that water could be contained in the event the hull was breached. Although they were presumed to be watertight, the bulkheads were not capped at the top. The ship's builders claimed that four of the compartments could be flooded without endangering the liner's buoyancy. The system led many to claim that the Titanic was unsinkable.
Following completion of the hull and main superstructure, the Titanicwas launched on May 31, 1911. It then began the fitting-out phase, as machinery was loaded into the ship and interior work began. After the Olympic's maiden voyage in June 1911, slight changes were made to the Titanic's design. In early April 1912 the Titanic underwent its sea trials, after which the ship was declared seaworthy.
As it prepared to embark on its maiden voyage, the Titanicwas one of the largest and most opulent ships in the world. It had a gross registered tonnage (i.e., carrying capacity) of 46,328 tons, and when fully laden the ship displaced (weighed) more than 52,000 tons. The Titanic was approximately 882.5 feet (269 metres) long and about 92.5 feet (28.2 metres) wide at its widest point.
 
 
 
 Titanic  luxury passenger ship All about
 
 

Maiden voyage

  • The Titanic leaving Southampton, England, April 10, 1912.
On April 10, 1912, the Titanicset sail on its maiden voyage, traveling from Southampton, England, to New York City. Nicknamed the “Millionaire's Special,” the ship was fittingly captained by Edward J. Smith, who was known as the “Millionaire's Captain” because of his popularity with wealthy passengers. Indeed, onboard were a number of prominent people, including American businessman Benjamin Guggenheim, British journalist William Thomas Stead, and Macy's department store co-owner Isidor Straus and his wife, Ida. In addition, Ismay and Andrews were also traveling on the Titanic.The voyage nearly began with a collision, however, when suction from the Titanic caused the docked New York to swing into the giant liner's path. After an hour of maneuverings to prevent the accident, the Titanicwas under way. On the evening of April 10 the ship stopped at Cherbourg, France. The city's dock was too small to accommodate the Titanic, so passengers had to be ferried to and from the ship in tenders. Among those boarding were John Jacob Astor and his pregnant second wife, Madeleine, and Molly Brown. After some two hours the Titanicresumed its journey. On the morning of April 11 the liner made its last scheduled stop in Europe, at Queenstown (Cobh), Ireland. At approximately 1:30 PM the ship set sail for New York City. Onboard were some 2,200 people, approximately 1,300 of whom were passengers.
 

Final hours

Throughout much of the voyage, the wireless radio operators on the Titanic, Jack Phillips and Harold Bride, had been receiving iceberg warnings, most of which were passed along to the bridge. The two men worked for the Marconi Company, and much of their job was relaying passengers' messages. On the evening of April 14 the Titanicbegan to approach an area known to have icebergs. Smith slightly altered the ship's course to head farther south. However, he maintained the ship's speed of some 22 knots. At approximately 9:40 PM the Mesaba sent a warning of an ice field. The message was never relayed to the Titanic's bridge. At 10:55 PM the nearby Leyland liner Californian sent word that it had stopped after becoming surrounded by ice. Phillips, who was handling passenger messages, scolded the Californian for interrupting him.
Two lookouts, Frederick Fleet and Reginald Lee, were stationed in the crow's nest of the Titanic. Their task was made difficult by the fact that the ocean was unusually calm that night: because there would be little water breaking at its base, an iceberg would be more difficult to spot. In addition, the crow's nest's binoculars were missing. At approximately 11:40 PM, about 400 nautical miles (740 km) south of Newfoundland, Canada, an iceberg was sighted, and the bridge was notified. First Officer William Murdoch ordered both the ship “hard-a-starboard” (to the left) and the engines reversed. The Titanicbegan to turn, but it was too close to avoid a collision. The ship's starboard side scraped along the iceberg. At least five of its supposedly watertight compartments toward the bow were ruptured. After assessing the damage, Andrews determined that, as the ship's forward compartments filled with water, its bow would drop deeper into the ocean, causing water from the ruptured compartments to spill over into each succeeding compartment, thereby sealing the ship's fate. The Titanic would founder. (By reversing the engines, Murdoch actually caused the Titanicto turn slower than if it had been moving at its original speed. Most experts believe the ship would have survived if it had hit the iceberg head-on.)
Smith ordered Phillips to begin sending distress signals, one of which reached the Carpathia at approximately 12:20 AM on April 15, and the Cunard ship immediately headed toward the stricken liner. However, the Carpathia was some 58 nautical miles (107 km) away when it received the signal, and it would take more than three hours to reach the Titanic. Other ships also responded, including the Olympic, but all were too far away. A vessel was spotted nearby, but the Titanic was unable to contact it. The Californian was also in the vicinity, but its wireless had been turned off for the night.
 
  • The sinking of the Titanic, undated illustration.
  • Titanic survivors in a lifeboat.
As attempts were made to contact nearby vessels, the lifeboats began to be launched, with orders of women and children first. Although the Titanic's number of lifeboats exceeded that required by the British Board of Trade, its 20 boats could carry only 1,178 people, far short of the total number of passengers. This problem was exacerbated by lifeboats being launched well below capacity, because crewmen worried that the davits would not be able to support the weight of a fully loaded boat. (The Titanic had canceled its scheduled lifeboat drill earlier in the day, and the crew was unaware that the davits had been tested in Belfast.) Lifeboat number 7, which was the first to leave the Titanic, held only about 27 people, though it had space for 65. In the end, only 705 people would be rescued in lifeboats.As the Titanic's bow continued to sink, the stern began to rise out of the water, placing incredible strain on the midsection. At approximately 2:18 AM the Titanic broke in two, with the bow going underwater. At 2:20 AMthe ship foundered as the stern section also disappeared beneath the Atlantic. Hundreds of passengers and crew went into the icy water. Fearful of being swamped, those in the lifeboats delayed returning to pick up survivors. By the time they rowed back, almost all the people in the water had died from exposure. In the end, more than 1,500 perished. Aside from the crew, which had about 700 fatalities, third class suffered the greatest loss: of approximately 710, only some 174 survived. (Subsequent claims that passengers in steerage were prevented from boarding boats, however, were largely dispelled. Given Smith's failure to sound a general alarm, some third-class passengers did not realize the direness of the situation until it was too late. Many women also refused to leave their husbands and sons, while the difficulty of simply navigating the complex Titanic from the lower levels caused some to reach the top deck after most of the lifeboats had been launched.)
 

Rescue

  • Titanic survivors aboard the Carpathia, April 1912.
The Carpathia arrived in the area at approximately 3:30 AM, more than an hour after the Titanic sank. Lifeboat number 2 was the first to reach the liner. Over the next several hours the Carpathia picked up all survivors. At approximately 8:30 AM the Californian arrived, having heard the news some three hours earlier. Shortly before 9:00 AM the Carpathia headed for New York City, where it arrived to massive crowds on April 18.
 

Aftermath and investigation

Although the majority of dead were crew members and third-class passengers, many of the era's wealthiest and most prominent families lost members, among them Isidor and Ida Straus and John Jacob Astor. In the popular mind, the glamour associated with the ship, its maiden voyage, and its notable passengers magnified the tragedy of its sinking. Legends arose almost immediately about the night's events, those who had died, and those who survived. Heroes and heroines—such as American Molly Brown, who helped command a lifeboat, and Capt. Arthur Henry Rostron of the Carpathia—were identified and celebrated by the press. Others—notably White Star chairman J. Bruce Ismay, who had found space in a lifeboat and survived—were vilified. There was a strong desire to explain the tragedy, and inquiries into the sinking were held in the United States and Great Britain.
 

U.S. inquiry

The U.S. investigation, which lasted from April 19 to May 25, 1912, was led by Sen. William Alden Smith. In all, more than 80 people were interviewed. Notable witnesses included Second Officer Charles Lightoller, the most senior officer to survive. He defended the actions of his superiors, especially Captain Smith's refusal to decrease the ship's speed. Many passengers testified to the general confusion on the ship. A general warning was never sounded, causing a number of passengers and even crew members to be unaware of the danger for some time. In addition, because a scheduled lifeboat drill had never been held, the lowering of the boats was often haphazard.
Perhaps the most-scrutinized testimony came from the crew of the Californian, who claimed their ship was some 20 nautical miles (37 km) from the Titanic. Crew members saw a ship but said it was too small to be the Titanic. They also stated that it was moving and that efforts to contact it by Morse lamp were unsuccessful. After sighting rockets in the distance, the crew informed Capt. Stanley Lord, who had retired for the night. Instead of ordering the ship's wireless operator to turn on the radio, Lord instead told the men to continue to use the Morse lamp. By 2:00 AM the nearby ship had reportedly sailed away.
In the end, the U.S. investigation faulted the British Board of Trade, “to whose laxity of regulation and hasty inspection the world is largely indebted for this awful fatality.” Other contributing causes were also noted, including the failure of Captain Smith to slow the Titanic after receiving ice warnings. However, perhaps the strongest criticism was levied at Captain Lord and the Californian. The committee found that the ship was “nearer the Titanic than the 19 miles reported by her Captain, and that her officers and crew saw the distress signals of the Titanic and failed to respond to them in accordance with the dictates of humanity, international usage, and the requirements of law.”
 

British inquiry

In May 1912 the British inquiry began. It was overseen by the British Board of Trade, the same agency that had been derided by U.S. investigators for the insufficient lifeboat requirements. The presiding judge was Sir John Charles Bigham, Lord Mersey. Little new evidence was discovered during the 28 days of testimony. The final report stated that “the loss of the said ship was due to collision with an iceberg, brought about by the excessive speed at which the ship was being navigated.” However, Mersey also stated that he was “not able to blame Captain Smith…he was doing only that which other skilled men would have done in the same position.” Captain Lord and the Californian, however, drew sharp rebuke. The British investigators claimed that the liner was some 5–10 nautical miles (9–19 km) from the Titanic and that “she might have saved many, if not all, of the lives that were lost.”
Both the U.S. and British investigations also proposed various safety recommendations, and in 1913 the first International Conference for Safety of Life at Sea was called in London. The conference drew up rules requiring that every ship have lifeboat space for each person embarked; that lifeboat drills be held for each voyage; and, because the Californian had not heard the distress signals of the Titanic, that ships maintain a 24-hour radio watch. The International Ice Patrol was established to warn ships of icebergs in the North Atlantic shipping lanes and to break up ice.
 

The Californian incident

The U.S. and British inquiries did little to end speculation and debate concerning the sinking of the Titanic. Particular focus centred on the Californian. Supporters of Lord, nicknamed “Lordites,” believed that the captain had been unfairly criticized. They held that a third ship—possibly the Samson, a Norwegian boat illegally hunting seals—was between the Leyland liner and the Titanic. That view eventually gained much support. Crew members of the Californiandid not hear rockets being fired, though the sounds would have been audible if the ship had been within the distances claimed by U.S. and British investigators. In addition, people aboard the Titanic stated that a vessel was headed in their direction, which could not have been Californian, which was stopped at the time. While the true location of the Californianwill likely never be conclusively known, many experts believe it was actually some 20 miles (37 km) away and would not have reached the Titanicbefore it sank. However, Lord has continued to draw criticism for his failure to take more action in response to the distress signals.
 

Discovery and legacy

Within days of the Titanic's sinking, talk began of finding the wreck. Given the limits of technology, however, serious attempts were not undertaken until the second half of the 20th century. In August 1985 Robert Ballard led an American-French expedition from aboard the U.S. Navy research ship Knorr. The quest was partly a means for testing the Argo, a 16-foot (5-metre) submersible sled equipped with a remote-controlled camera that could transmit live images to a monitor. The submersible was sent some 13,000 feet (4,000 metres) to the floor of the Atlantic Ocean, sending video back to the Knorr. On September 1, 1985, the first underwater images of the Titanicwere recorded as its giant boilers were discovered. Later video showed the ship lying upright in two pieces. While the bow was clearly recognizable, the stern section was severely damaged. Covering the wreckage were rust-coloured stalactite-like formations. Scientists later determined that the rusticles, as they were named, were created by iron-eating microorganisms, which are consuming the wreck.
The Titanic—located at about 41°43′57′′ N, 49°56′49′′ W (bow section), some 13 nautical miles (24 km) from the position given in its distress signals—was explored numerous times by manned and unmanned submersibles. The expeditions found no sign of the long gash previously thought to have been ripped in the ship's hull by the iceberg. Scientists instead discovered that the collision's impact had produced a series of thin gashes as well as brittle fracturing and separation of seams in the adjacent hull plates, thus allowing water to flood in and sink the ship. In subsequent years, marine salvagers raised small artifacts from the wreckage as well as pieces of the ship itself, including a large section of the hull. Examination of these parts—as well as paperwork in the builder's archives—led to speculation that low-quality steel or weak rivets may have contributed to the Titanic's sinking.
 
  • (From left) Kate Winslet, Leonardo DiCaprio, and James Cameron on the set of the film …
Countless renditions, interpretations, and analyses of the Titanicdisaster transformed the ship into a cultural icon. In addition to being the subject of numerous books, the ship inspired various movies, notably A Night to Remember (1958) and James Cameron's blockbuster Titanic(1997). In the late 20th and early 21st centuries, artifacts from the ship formed the basis of a highly successful exhibit that toured the world, and a profitable business was developed transporting tourists to the Titanic's wreck. Several museums dedicated to the liner draw thousands of visitors each year. Although the wreck of the Titanic will eventually deteriorate, the famed liner seems unlikely to fade from the public imagination.
 
Titanic  luxury passenger ship this is the story

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