LYCOS RETRIEVER Beta Retriever Home  |  What is Lycos Retriever?  
Search Results for "x rays"
There are 1166 Retriever pages mentioning "x rays":
  1. X -- X-Rays
    The first X-ray tube was the Crookes tube, a partially evacuated glass bulb containing two electrodes, named after its designer, the British chemist and physicist Sir William Crookes. When an electric current passes through such a tube, the residual gas is ionized and positive ions, striking the cathode, eject electrons from it. These electrons, in the form of a beam of cathode rays, bombard the glass walls of the tube and produce X rays. Such tubes produce only soft X rays of low energy. See Ion; Ionization.
  2. X
    X rays are electromagnetic radiation ranging in wavelength from about 100 A to 0.01 A (1 A is equivalent to about 10-8 cm/about 4 billionths of an in.; see Wave Motion). The shorter the wavelength of the X ray, the greater is its energy and its penetrating power. Longer wavelengths, near the ultraviolet-ray band of the electromagnetic spectrum, are known as soft X rays (see Spectrum). The shorter wavelengths, closer to and overlapping the gamma-ray range, are called hard X rays (see Radioactivity). A mixture of many different wavelengths is known as “white” X rays, as opposed to “monochromatic” X rays, which represent only a single wavelength. Both light and X rays are produced by transitions of electrons that orbit atoms, light by the transitions of outer electrons and X rays by the transitions of inner electrons.
  3. Greg Ray
    Greg Ray was a 10-time All-American in short distance events. He was an Indoor All-American in the 200 meter dash four times. He set the school record in 1997 for the 200 meter dash with a time of 0:21.63. He was the NAIA indoor 200 meter champion in 1998 and 2000. During the outdoor season, Ray claimed All-American honors in the 100 meter dash and with the 4x100 meter relay team in 1997 and 1998. The 4x100 meter relay team won the national championship in 1997 and 1998.
  4. The Invisible Ray
    The Invisible Ray is an exciting story about an overworked scientist who works effortlessly in his Carpathian castle looking for secrets of the universe. Boris Karloff plays the scientist Janos Ruhk who travels with a band of other scientists to Africa for the spot where an unidentified element landed centuries ago. Karloff is very good as the scientist who accidentally poisons himself with this new radioactive element. Karloff is obsessed with the idea that his fellow travelers, amongst them the stately Lugosi as Dr. Benet, are after his honors and secrets of this new find. Because of this, Karloff goes on a maniacal murdering spree of his former friends. There are many good elements in this film, most dealing with the rather interesting story of science gone amok.
  5. Ray Milland
    A native of Wales, Ray Milland had a long Hollywood career. He started off as a kind of Cary Grant Jr., performing ably in mostly light comedies and adventures while still performing in the occasional drama. His most notable role came as the monster alcoholic in
  6. Cathode Ray Tube -- Cathode-Ray Tubes
    The cathode-ray tube (CRT) television screen is the oldest display technology, with a history extending back to the late 1890s. It is still difficult to better, although its considerable depth, weight, and high voltage requirements are disadvantages.
  7. X Factor
    The X Factor was the beginning of a new era of Iron Maiden, with Blaze Bayley as frontman and vocalist. It ... marks a rebirth of sorts, breathing new life and vitality into a band that was beginning to stagnate during the previous years with Dickinson. With the Heavy Metal genre virtually dead, mostly in the United States, The X Factor reaffirms Iron Maiden's ability to continue making their music without stooping to pander to popular and shallow trends.
  8. Cathode Ray Tube -- Televisions
    To progress your search for the term cathode ray tube television, exploring the Connected Earth website is likely to help you. Follow the link above, or click the button below to get going.
  9. Cathode Ray Tube -- Glass
    CRT glass is shipped to CRT tube manufacturers and in assembling CRT tubes a substantial volume of CRT glass is broken. For many years the CRT tube manufacturers disposed of the broken glass... called cullet. Now the universal practice is to send the cullet back to the CRT glass manufacturers for recycling. CRT glass manufacturers have a high degree of confidence as to the composition of this recycled cullet since they know the glass was produced by their facility. The CRT glass manufacturers are recycling most, if not all, of this recycled CRT cullet.
  10. Cathode Ray Tube -- Beams
    While many scientists were busy trying to unlock the secrets of cathode rays, others were searching for ways to apply them toward practical ends. The first such application came in 1897 in the form of Karl Ferdinand Braun's oscilloscope. This device used a cathode ray tube to produce luminescence on a chemically treated screen. The cathode rays were allowed to pass through a narrow aperture, effectively focusing them into a beam which appeared on the screen as a dot. The dot was then made to "scan" across the screen according to the frequency of an incoming signal. An observer viewing the oscilloscope's screen would then see a visual representation of an electrical pulse.
« PreviousPage 1 of 117 »
SEARCH