Discovery of X-rays

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Across
  1. 4. First to use film in intraoral radiography.
  2. 5. A beam of energy that has the power to penetrate substances and record image shadows on photographic film.
  3. 7. Exposed the first dental radiograph in the US using a live patient.
  4. 8. A powerful tool for physical experiments and examining the body’s interior.
  5. 9. a high-energy radiation produced by the collision of a beam of electrons with a metal target in an x-ray tube.
  6. 11. The art and science of making radiographs by the exposure of film to x-rays.
  7. 15. Introduced the long-cone paralleling technique in 1947.
  8. 16. W.J. Morton used this as he made the first dental radiograph in the US.
  9. 18. It is caused by invisible rays originating from the Crookes tube.
  10. 19. A chemical that glowed in a piece of paper when the tube is covered with black cardboard.
  11. 20. A beam of thermoelectrons is produced by heating a wire cathode.
Down
  1. 1. A radiation when an electrical charge is applied to two metal plates inside a glass tube filled with rarefied gas.
  2. 2. An early version of the cathode ray tubes used in older televisions and monitors.
  3. 3. Father of Panoramic Radiography
  4. 6. Any person who positions, exposes, and processes dental x-ray film.
  5. 10. A picture on film produced by the passage of x-rays through an object or body.
  6. 12. A terminal of the x-ray tube.
  7. 13. Roentgen was experimenting with this tube when he discovered the new invisible light.
  8. 14. Discovered that the cathode rays were streams of charged particles.
  9. 17. Introduced the bisecting technique in 1904.