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Search results 791 - 800 of 1233 matching essays
- 791: Nuclear Waste Management
- ... in this waste material decays at its characteristic rate. A half-life can be less than a second or can be thousands of years long. The isotopes also emit characteristic radiation: it can be electromagnetic (X- ray or gamma radiation) or it can consist of particles (alpha, beta, or neutron radiation). Exposure to large doses of ionizing radiation causes characteristic patterns of injury. Doses are measured in rads (1 rad is ...
- 792: Global Warming
- ... population growth has occurred in three surges and second, that the time between surges has dramatically shortened (Deevey, 1960). Figure 1. Population (Log-population verses log-time since 1 million years ago). Time values on x-axis, ignoring minus sign, are powers of 10 years before and after 1975 (at 0). Vertical dashed-line at 1995. Filled circles for known values are to left of 1995 and open circles on and ...
- 793: Air Polution
- ... it causes serious illness and deaths even if the exposure to NO2 is short. "The gas was responsible for 124 deaths in a fire at Cleveland's Crile Children Hospital on May 15, 1929, when x-ray film containing nitrocellulose accidentally caught fire and produced NO2" (Hodges 63). Solution As one can surely see these types of air pollutants are harmful to our atmosphere, environment and personal health. Factory owners can ...
- 794: Leonardo Fibonacci
- ... wrote we still have copies of Liber abbaci (1202), Practica geometriae (1220), Flos (1225), and Liber Quadratorum. Sadly his books on commercial arithmetic Di minor guisa is lost as well as his commentary on Book X Euclids Elements. One of Leonardos contributions to mathematics was his introducing the Decimal Number system into Europe. He was one of the first people to introduce the Hindu-Arabic number system into Europe ...
- 795: Mother Teresa
- ... world a great deal Bibliography Bibliography Clucas, Joan Graff. Mother Teresa. New York: Chelsea House Publishers, 1988. Egan, Eileen. Such a Vision of the Street. New York: Doubleday, 1985. "Mother Teresa." Encarta. 1997-2000. Muggeridge, Malcolm. Something Beautiful for God. New York: Image Books, 1977. Mukherjee, Bharati. "Mother Teresa." Time June 14, 1999: 88-90. Playfoot, Janet N. "My Life for the Poor: Mother Teresa of Calcutta." The Great American Bathroom ...
- 796: Sir Arthur Conan Doyle
- ... s father, Charles, was confined inside a nursing home in London, England because of alcoholism and epilepsy. Jean Leckie and Doyle had three children, a son, Denis Percy Stewart born in 1909, another son, Adrian Malcolm born in 1910, and a daughter, Lena Jean Annette born in 1912.15 In 1883, The Captain of the Pole Star was published, as well as some other minor pieces he had written. Doyle was ...
- 797: Hurricanes
- ... according to annual lists of proposed hurricane names given by the World Meteorological Organization. Each year a unique set of names begin with 'A' and progress through the alphabet except for the letters Q, U, X, Y, and Z. Hurricanes are classified into 5 categories: Category 1- Damage primarily to shrubbery, trees, foliage, and unanchored homes. No real damage to other structures. Some damage to poorly constructed signs. Low-lying coastal ...
- 798: Xenon
- ... is also used in medical purposes. Local anesthesia is made up of 20% oxygen and 80% xenon. Xenon also can be injected or breathed into the body to give clearer M.R.I.'s or X-rays. In addition to the uses above, xenon is also in movie projector lamps, advertising lights, and bubble chambers, Bubble chambers are devices used by physicists that are used to detect nuclear radiation. The element ...
- 799: The Life And Times Of The Man
- ... there were the graphophone for recording sound on wax cylinders or disks; the photophone, for transmitting speech on a beam of light; an audiometer; a telephone probe, used in surgery until the discovery of the X-ray; and an induction balance for detecting metal within the human body. Bell founded several organizations to support teaching of the deaf. He helped to establish Science magazine and the National Geographic Society. He also ...
- 800: Thomas Edison
- ... electron tube. The electron tube led to the electric signal, which led to electronics. Electronics is a branch of science that is related to electricity. Without electronics we might not have radio, TV, CDs, computers, x-ray machines or space travel. The discovery of electrons was patented as the "Edison effect" which is the basis of electronics. In 1887 Edison built a bigger invention factory in West Orange, New Jersey. This ...
Search results 791 - 800 of 1233 matching essays
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