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