Discovery of X-rays

2. Exposed the first dental radiograph in the US using a live patient.
5. Discovered that the cathode rays were streams of charged particles.
6. A powerful tool for physical experiments and examining the body’s interior.
9. Introduced the bisecting technique in 1904.
11. a high-energy radiation produced by the collision of a beam of electrons with a metal target in an x-ray tube.
13. A terminal of the x-ray tube.
14. Father of Panoramic Radiography
16. Roentgen was experimenting with this tube when he discovered the new invisible light.
17. It is caused by invisible rays originating from the Crookes tube.
18. W.J. Morton used this as he made the first dental radiograph in the US.
19. A chemical that glowed in a piece of paper when the tube is covered with black cardboard.
20. The art and science of making radiographs by the exposure of film to x-rays.

1. Introduced the long-cone paralleling technique in 1947.
3. A beam of energy that has the power to penetrate substances and record image shadows on photographic film.
4. A beam of thermoelectrons is produced by heating a wire cathode.
7. A picture on film produced by the passage of x-rays through an object or body.
8. radiographer Any person who positions, exposes, and processes dental x-ray film.
10. An early version of the cathode ray tubes used in older televisions and monitors.
12. First to use film in intraoral radiography.
15. A radiation when an electrical charge is applied to two metal plates inside a glass tube filled with rarefied gas.