Discovery of X-rays

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Across
  1. 2. This is a special imaging device that produces viewable X-rays without the need for radiographs, by passing a continuous X-ray beam through the body part being examined to allow “real time” examination.
  2. 3. This consists of tiny particles of matter that possess mass, travel in straight lines and at high speeds, and transmit kinetic energy by means of their extremely fast-moving small masses.
  3. 8. This is otherwise known as positive electron which converts electrons into x-ray photons.
  4. 11. This is the flow or propagation of wavelike energy (without mass) through space or matter.
  5. 12. This is a sealed glass tube with the majority of the air evacuated. This regulates the flow of electric current between electrodes to which an electric potential difference has been applied.
  6. 14. This refers to the glowing light emitted by certain substances when struck by a particular wavelength.
  7. 15. This is an image or picture produced on a receptor by exposure to ionizing radiation (i.e., x-rays, gamma rays, similar radiation).
Down
  1. 1. This refers to the first hot-cathode x-ray tube, invented by William Coolidge, which is a high-vacuum tube containing a tungsten filament.
  2. 4. This is otherwise known as negative electron which supplies the electrons necessary to produce x-rays.
  3. 5. This is a form of energy from a source carried by waves or a stream of particles at the speed of light.
  4. 6. This is an element symbolized by “Rn” and the atomic number 86, that is a radioactive noble gas.
  5. 7. This was what “first detected” radiation when its glowing screen alerted Wilhelm Rontgen of a mysterious ray, now known as x-rays.
  6. 9. This was an early experimental electrical discharge tube designed by William Crookes, in which with partial vacuum, cathode rays were discovered.
  7. 10. These are streams of high-speed electrons that originate from the cathode in an x-ray tube.
  8. 13. This is the production of ions from converting atoms that results in the formation of a positive atom and a dislodged negative electron.