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Highlights for March 14
1794: Eli Whitney Received a Patent for the Cotton Gin.
Although cotton was a valuable commodity that grew well in the American South, it had one major drawback: the seeds had to be removed from the cotton fibers by hand. Eli Whitney was a brilliant mechanical engineer who decided to invent a machine to perform that difficult task. Within a few days, he had produced a sketch of his design, and ten days later, he constructed a crude working model. Once he had perfected the machine, he filed for a patent, which he received on March 14, 1794. He set up a company to manufacture and market the invention, which he called a cotton gin. As a commercial venture, it was a failure. Because the machine was fairly simple, other manufacturers easily pirated the design. Whitney's company folded in 1797.
The cotton gin itself, however, spread rapidly throughout the South, with enormous implications. Once the cleaning process was mechanized, cotton became an extremely profitable crop. The cotton boom that followed not only brought great prosperity to the South, but also created a huge demand for slaves to pick the crop on the gigantic cotton plantations that rapidly emerged. Thus, the cotton gin revitalized both the Southern economy and the institution of slavery, which had been dying out economically. In this sense, the invention of the cotton gin has been seen as a major, although indirect cause of the Civil War.
1879 ALBERT EINSTEIN BORN:On March 14, 1879, Albert Einstein is born, the son of a Jewish electrical engineer in Ulm, Germany. Einstein's theories of special and general relativity drastically altered man's view of the universe, and his work in particle and energy theory helped make possible quantum mechanics and, ultimately, the atomic bomb.
After a childhood in Germany and Italy, Einstein studied physics and mathematics at the Federal Polytechnic Academy in Zürich, Switzerland. He became a Swiss citizen and in 1905 was awarded a Ph.D. from the University of Zürich while working at the Swiss patent office in Bern. That year, which historians of Einstein's career call the annus mirabilis--the "miracle year"--he published five theoretical papers that were to have a profound effect on the development of modern physics.
In the first of these, titled "On a Heuristic Viewpoint Concerning the Production and Transformation of Light," Einstein theorized that light is made up of individual quanta (photons) that demonstrate particle-like properties while collectively behaving like a wave. The hypothesis, an important step in the development of quantum theory, was arrived at through Einstein's examination of the photoelectric effect, a phenomenon in which some solids emit electrically charged particles when struck by light. This work would later earn him the 1921 Nobel Prize in Physics.
In the second paper, he devised a new method of counting and determining the size of the atoms and molecules in a given space, and in the third he offered a mathematical explanation for the constant erratic movement of particles suspended in a fluid, known as Brownian motion. These two papers provided indisputable evidence of the existence of atoms, which at the time was still disputed by a few scientists.
Einstein's fourth groundbreaking scientific work of 1905 addressed what he termed his special theory of relativity. In special relativity, time and space are not absolute, but relative to the motion of the observer. Thus, two observers traveling at great speeds in regard to each other would not necessarily observe simultaneous events in time at the same moment, nor necessarily agree in their measurements of space. In Einstein's theory, the speed of light, which is the limiting speed of any body having mass, is constant in all frames of reference. In the fifth paper that year, an exploration of the mathematics of special relativity, Einstein announced that mass and energy were equivalent and could be calculated with an equation, E=mc2.
Although the public was not quick to embrace his revolutionary science, Einstein was welcomed into the circle of Europe's most eminent physicists and given professorships in Zürich, Prague, and Berlin. In 1916, he published "The Foundation of the General Theory of Relativity," which proposed that gravity, as well as motion, can affect the intervals of time and of space. According to Einstein, gravitation is not a force, as Isaac Newton had argued, but a curved field in the space-time continuum, created by the presence of mass. An object of very large gravitational mass, such as the sun, would therefore appear to warp space and time around it, which could be demonstrated by observing starlight as it skirted the sun on its way to earth. In 1919, astronomers studying a solar eclipse verified predictions Einstein made in the general theory of relativity, and he became an overnight celebrity. Later, other predictions of general relativity, such as a shift in the orbit of the planet Mercury and the probable existence of black holes, were confirmed by scientists.
During the next decade, Einstein made continued contributions to quantum theory and began work on a unified field theory, which he hoped would encompass quantum mechanics and his own relativity theory as a grand explanation of the workings of the universe. As a world-renowned public figure, he became increasingly political, taking up the cause of Zionism and speaking out against militarism and rearmament. In his native Germany, this made him an unpopular figure, and after Nazi leader Adolf Hitler became chancellor of Germany in 1933 Einstein renounced his German citizenship and left the country.
He later settled in the United States, where he accepted a post at the Institute for Advanced Study in Princeton, New Jersey. He would remain there for the rest of his life, working on his unified field theory and relaxing by sailing on a local lake or playing his violin. He became an American citizen in 1940.
In 1939, despite his lifelong pacifist beliefs, he agreed to write to President Franklin D. Roosevelt on behalf of a group of scientists who were concerned with American inaction in the field of atomic-weapons research. Like the other scientists, he feared sole German possession of such a weapon. He played no role, however, in the subsequent Manhattan Project and later deplored the use of atomic bombs against Japan. After the war, he called for the establishment of a world government that would control nuclear technology and prevent future armed conflict.
In 1950, he published his unified field theory, which was quietly criticized as a failure. A unified explanation of gravitation, subatomic phenomena, and electromagnetism remains elusive today. Albert Einstein, one of the most creative minds in human history, died in Princeton in 1955.
1964 Jack Ruby sentenced to death
Jack Ruby, the Dallas nightclub owner who killed Lee Harvey Oswald--the accused assassin of President John F. Kennedy--is found guilty of the "murder with malice" of Oswald and sentenced to die in the electric chair. It was the first courtroom verdict to be televised in U.S. history.
On November 24, 1963, two days after Kennedy's assassination, Lee Harvey Oswald was brought to the basement of the Dallas police headquarters on his way to a more secure county jail. A crowd of police and press with live television cameras rolling gathered to witness his departure. As Oswald came into the room, Jack Ruby emerged from the crowd and fatally wounded him with a single shot from a concealed .38 revolver. Ruby, who was immediately detained, claimed he was distraught over the president's assassination. Some called him a hero, but he was nonetheless charged with first-degree murder.
Jack Ruby, originally known as Jacob Rubenstein, operated strip joints and dance halls in Dallas and had minor connections to organized crime. He also had a relationship with a number of Dallas policemen, which amounted to various favors in exchange for leniency in their monitoring of his establishments. He features prominently in Kennedy-assassination theories, and many believe he killed Oswald to keep him from revealing a larger conspiracy. In his trial, Ruby denied the allegation and pleaded innocent on the grounds that his great grief over Kennedy's murder had caused him to suffer "psychomotor epilepsy" and shoot Oswald unconsciously. The jury found him guilty and sentenced him to die.
In October 1966, the Texas Court of Appeals reversed the decision on the grounds of improper admission of testimony and the fact that Ruby could not have received a fair trial in Dallas at the time. In January 1967, while awaiting a new trial to be held in Wichita Falls, Ruby died of lung cancer in a Dallas hospital.
The official Warren Commission report of 1964 concluded that neither Oswald nor Ruby were part of a larger conspiracy, either domestic or international, to assassinate President Kennedy. Despite its seemingly firm conclusions, the report failed to silence conspiracy theories surrounding the event, and in 1978 the House Select Committee on Assassinations concluded in a preliminary report that Kennedy was "probably assassinated as a result of a conspiracy" that may have involved multiple shooters and organized crime. The committee's findings, as with those of the Warren Commission, continue to be widely disputed.
In the face of widespread questioning of their guilt, British authorities release the so-called "Birmingham Six," six Irish men who had been sent to prison 16 years earlier for the 1974 terrorist bombings of two Birmingham, England, pubs.
On November 21, 1974, two Irish Republican Army (IRA) bombs exploded in two separate Birmingham pubs, killing 21 people and injuring hundreds. The bombing attacks were part of the ongoing conflict between the British government and the IRA over the status of Northern Ireland. Days after the Birmingham bombings, the British government outlawed the IRA in all the United Kingdom, and authorities rushed to arrest and convict the IRA members responsible. Six Irish suspects were arrested and sent to interrogation, where four of them signed confessions. The IRA, which claimed responsibility for the Birmingham bombings, declared that the six were not members of its organization.
During the subsequent trial, the defendants maintained their innocence, claiming that police had beaten the confessions out of them. Prosecutors denied this and also came up with forensic evidence that apparently proved that the Birmingham Six had handled explosives shortly before their arrest. They were convicted and sentenced to lengthy prison terms.
In 1985, the forensic evidence was exposed by scientists as unreliable at best, and in 1987 an appeals judge conceded that the same results could be obtained from testing people who recently touched playing cards or cigarette paper. However, it was not until March 1991, with people across Britain and Ireland calling for their release, that the Birmingham Six were freed after years in prison. Seven years later, a British court of appeals formally overturned their sentences, citing serious doubts about the legitimacy of the police evidence and the treatment of the suspects during their interrogation
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