What type of energy is X-ray?
A. High frequency sound waves
B. High-energy electromagnetic radiation
C. Emissions from radioactive sources
D. Electron flow, discharged from the hot cathode
查看答案
How do electromagnetic waves propagate?
A. By applying an electric field
By applying a magnetic field
C. Through front and back vibration
D. Through self-oscillation
4. The energy electrons lose when colliding with electrons in the anode are released as heat, and
A. a) Electricity.
B. b) More electrons.
C. c) X-rays.
3. How long does an X-ray exposure generally take?
A. a) Less than a second.
B. b) A couple of seconds.
C. c) A few minutes.
Fluorescence is:
A. a) A bright light caused by an electric discharge
B. b) Electromagnetic (EM) radiation, emitted at a lower frequency than the incident radiation.
C. c) Light that is emitted by chemical reactions in the tissue.