Across
- 3. partial absorption of energy
- 6. is characterized by the energy contained in the photon. X-ray photon has more E than that of a light or RF photon.
- 7. Responsible for producing images.
- 12. Smallest bundle of energy traveling through space at the speed of light
- 13. in a straight line.
- 14. soft tissue ~allows transmission of x-rays with decreased intensity, some change in direction.
- 18. describes radio waves in terms of frequency, such as television or radio stations. RF has low energy and long wavelengths. Very short wavelength RF is microwave radiation
- 21. - Energy radiated through space accompanied by electrical and magnetic fields.
- 23. no mass.
- 24. and magnetic fields are 90-degrees to each other.
- 25. intensity is INVERSELY related to the square of the distance from the source
Down
- 1. Number of cycles passing any given point
- 2. half of the range from crest to valley
- 4. - The smallest amount of energy that can be emitted or absorbed in the from of electromagnetic radiation is known as quantum .
- 5. No light passes through
- 6. square law- Relates beam intensity to distance from the source (focal spot source of x-rays)
- 8. from one crest to another
- 9. ray- come from inside the nucleus of a radioactive atom, and they are emitted spontaneously from radioactive material.
- 10. -bone ~ absorbs x-rays.
- 11. Is a phenomenon when wavelength increases, energy behaves more wave like
- 15. energy of the radiation absorbed or emitted is directly proportional to the frequency of the radiation.
- 16. occupies the smallest segment of the electromagnetic spectrum, but the only portion we can sense directly
- 17. Smallest quantity of any type of electromagnetic radiation
- 19. photons, travel @ the speed of light and either exist with a velocity of speed of light or do not exist at all.
- 20. opposite is true for x-rays: behave more like particles than waves.
- 22. of varying degrees of absorption of the useful x-ray beam as it passes through the tissues of the body.