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The German theologian Gerhard von Rad (1901-1971) developed the "tradition history" approach to the Old Testament that has dominated the study of the Bible for nearly 40 years. Gerhard von Rad was born to a patrician medical family in N&uu...
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Study Pack: 1 Biography, 1 eBook
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Although they rely on two fundamentally different types of wave transmission, Radio Detection and Ranging (RADAR) and Sound Navigation and Ranging (SONAR) both are remote sensing systems with important military, scientific and commercial a...
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Radar stands for radio detection and ranging. It is a technology that generates radio waves, reflects them from an object, and detects the reflected waves to determine where the object is located in space. An outgrowth of the tremendous a...
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In modern Lithuanian poetry Henrikas Radauskas stands alone. His significance cannot be measured by his contribution to, or leadership of, any school or movement; nor can it be assessed in terms of his relationship to some general scheme i...
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Radclyffe Hall (1880-1943) is best known as the author of the controversial lesbian novel, The Well of Loneliness. Court cases led to the book being banned in both the United Kingdom and the United States. The American verdict was overturn...
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In the preface to his autobiography In My Time (1976), Thomas Raddall clearly and honestly describes his own writing: "In my novels and short stories I never sought to teach or to preach. My aim was intelligent entertainment, and if the re...
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RĀDHĀ. The cowherd woman (gopī) whose passionate love for the god Kṛṣṇa has been celebrated in song and story throughout the Indian subcontinent since medieval times, Rādhā has been r...
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Radial keratotomy (RK) is a surgical procedure in which precisely placed micro incisions are made in a patient's cornea--the clear matter which covers the eyeball--to permanently correct near-sightedness, or myopia. In myopia, the curvatur...
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A radian is a unit of angular measure equal to the angle between two radii that enclose a section of a circle's circumference equal in length to the length of a radius. The entire angle of a circle is 2 radians and so 2 radians is equal to...
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Aboriginal history and family values have been an integral part of Australian history. Radiance is a fresh influence to sensitive Aboriginal political issues that were overdue for addressing. For someone to state this movie has a strong cu...
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Almost all of the energy in the system comes from the sun, which provides us with heat, light, and radiation. Radiant energy travels from the sun, through space and warms the earth's surface. Because the earth is not flat, the sun h...
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The term radiation broadly applied to a class of physical phenomena that share a characteristic loss of energy in the radiating body or system that results in a propagation of particles and/or waves that carry the ability to do work and th...
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In addition to burns to integumentary (skin) and organ systems, certain types of radiation exposure may cause mutations (DNA damage and genetic alterations) or accelerate the types of mutations that occur spontaneously at a very low rate. ...
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Radiation injuries are damage to the body caused by ionizing radiation. Ionizing radiation (IR) is given off by the sun, X-ray machines, and radioactive elements. The word radiation comes from a Latin term that means "ray of light...
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Radiation-resistant bacteria encompass eight species of bacteria in a genus known as Deinococcus. The prototype species is Deinococcus radiodurans. This and the other species are capable of not only survival but of growth in the presence o...
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Cancer is the unregulated growth of abnormal cells in the body. These cells in a cluster are called a tumor, malignant tumors are cancer. These cells grow and move fast through the body. The divide and multiple faster than the normal heal...
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A free radical is an atom or group of atoms with a single unpaired electron. It is usually produced by breaking a covalent bond. The concept of the covalent (or electron-pair) bond was first formulated by the American chemist Gilbert Newto...
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For some African Americans, the end of slavery came with the January 1863 signing of the Emancipation Proclamation, the document that proclaimed most of them free. For others, it came in April 1865 with the end of the Civil War (1861ȁ...
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How radical was the American Revolution? Historians are divided over this important question, taking varying positions on the extent and nature of change during the Revolutionary era. But most historians agree that the American Revolution ...
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Paul Radin (1883-1959) was an American anthropologist and ethnographer who specialized in the ethnology of religion and mythology and the ethnography of Native Americans. Paul Radin was born on April 2, 1883, in Poland, and in his early ch...
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The radio's role as a source of popularizing music to mass groups of people is a quite large role. Between different types of programming and different recording industries, there are many different ways radio and recording industries infl...
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In 1932, while attempting to determine the source of static interference in radio communication systems, American engineer Karl Jansky (1905-1945) discovered the existence of radio waves emanating from beyond the Earth. Jansky traced all ...
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Before the advent of television in the late 1940s, radio was the most popular mass medium in America. During radio's "Golden Age" from 1929 through the end of World War II, radio's comedy-variety, soap opera, an...
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Canadian author Gordon Korman once described himself to Leslie Bennetts in the New York Times as a "gutless troublemaker" at school, always demonstrating a healthy disrespect for authority, but never pushing such skepticism into outright a...
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The inspirational movie Radio, starring Cuba Gooding JR. and Ed Harris, is highly remarkable and recommended for all viewers. The story follows the struggle of a poor, mentally challenged boy (Radio) who befriends a high-school football co...
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Radio Frequency Identification Chips
The Food and Drug Administration has considered approving radio frequency identification chips or RFID chips that are implanted under the skin that will hold information about the person tha...
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During the 1930s, the country enjoyed the emergence of a range of distinctly American musical sounds. The radio introduced Americans to more types of music than they had ever heard before. Radio continued to do so when the Great Depression...
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Radio waves are a part of the electromagnetic spectrum. Just as an optical telescope gathers visible light and magnifies it, a radio telescope is a large dish-shaped device that gathers and amplifies radio frequencies from space. Radio tel...
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Radiation is defined as the emission of energy from an atom in the form of a wave or particle. Such energy is released as electromagnetic radiation or as radioactivity. Electromagnetic radiation includes radio waves, infrared waves or he...
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After Antoine Becquerel's discovery of radioactivity in 1896, there was much speculation as to the nature of the phenomenon. For one thing, it was unclear whether this was an effect produced only by uranium (and, as later discovered by Pie...
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Until the early years of the twentieth century, there was no way to observe the functions of a living organism without surgery. Then came the invention of the x-ray machine, the first device that allowed doctors to actually see inside a li...
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Accidents happen, which is exactly what happened at the Chernobyl nuclear plant within the former Soviet Union. The scientists at this plant were conducting illegal tests on nuclear reactors, and the reactor within the plant bagan to boil a...
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Radioactivity was one of several discoveries made at the turn of the twentieth century that led to revolutionary changes in physics. Unlike some discoveries, it was completely unexpected. The discoverer was looking for something else when...
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Carbon dating is a technique used to determine the approximate age of once-living materials. It is based on the decay rate of the radioactive carbon isotope 14C, a form of carbon taken in by all living organisms while they are alive. Befor...
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Radiation chemistry is the study of how radioactive elements interact with other materials and how these radioactive materials can be used for different processes. Radiation exists as three different types: alpha rays, beta rays, and gamma...
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A Remote controlled car to most is considered a toy, to many a hobby, and to few a profession. But to all who can remember their child hood it was a source of fun, but how do I reinvent my interests in remote controlled cars and how do u s...
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Radioimmunoassay is an extremely sensitive method of measuring very small amounts of a substance in the blood. The isotopic method was developed in 1959 by the Americans, biophysicist Rosalyn Yalow and physician Solomon A. Berson (1918-197...
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In radiology, the maximum permissible concentration refers to the recommended upper limit for the dose which may be safely received during a specific period by a person exposed to ionizing radiation.Itis also sometimes called permissible d...
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In the nineteenth century, prominent scientists such as Charles Lyell, Charles Darwin, Sir William Thomson (Lord Kelvin), and Thomas Huxley, were in continual debate about the age of the earth. The discovery of the radioactive properties o...
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Radioisotopes, containing unstable combinations of protons and neutrons, are created by neutron activation that involves the capture of a neutron by the nucleus of an atom. Such a capture results in an excess of neutrons (neutron rich). Pr...
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Radium is the heaviest element in Group 2 of the periodic table. The elements in this group are sometimes referred to as the alkaline earth elements. Radium's atomic number is 88, its atomic mass is 226.0254, and its chemical symbol is Ra....
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