Discovery of X-rays

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Across
  1. 4. was used to investigate the behavior of electrical discharges in a gas
  2. 5. is a form of energy that is all around us and takes many forms, such as radio waves, microwaves, X-rays and gamma rays
  3. 8. provides a source of electrons and direct these electrons toward the anode
  4. 9. It fluoresces in the presence of x-rays and gamma rays and was the first radiation detector
  5. 11. is the emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles which cause ionization
  6. 13. is a radioactive, colorless, odorless, tasteless noble gas that can cause lung cancer
  7. 15. is the visible or invisible radiation emitted by certain substances as a result of incident radiation of a shorter wavelength such as X-rays or ultraviolet light
Down
  1. 1. is the forerunner of all the types of x-ray tubes in common use today
  2. 2. a radiation that includes a stream of atomic or subatomic particles that may be charged positively or negatively or not at all
  3. 3. usually consisting of a sealed glass or metal-ceramic enclosure that is used in electronic circuitry to control a flow of electrons
  4. 6. is the process by which ions are formed by gain or loss of an electron from an atom or molecule
  5. 7. an instrument with a fluorescent screen used for viewing X-ray images without taking and developing X-ray photographs
  6. 10. are streams of electrons observed in vacuum tubes
  7. 12. is a negative image on photographic film made by exposure to x-rays or gamma rays that have passed through matter or tissue
  8. 14. converts the energy of incident electrons into x-rays dissipating heat as a byproduct