DH 338 Exam 3 (Final) | 148 Q&A
1. Who discovered radiation?: Wilhelm Roentgen
2. When was radiation discovered?: 1895
3. What charge are protons?: +
4. What charge are neutrons?: No charge
5. What charge are electrons?: -
6. What is ionization?: Process of converting atoms to ions
7. What is an ion pair?: Newly positive atom + negative ejected electron
8. What is radiation?: The emission and propagation of energy through
space or a substance in the form of waves or particles
9. What is radioactivity?: The process by which certain unstable atoms
or ele- ments undergo spontaneous disintegration in an effort to
attain a more balanced nuclear state
10.What is X- radiation?: A high energy ionizing electromagnetic radiation
11.What are x- rays?: Weightless bundles of energy (photons)
12.Do x- rays have an electrical charge?: No
13.How fast do x-rays travel?: at the speed of light
14.What is wavelength?: distance b/t the crest of two adjacent waves
15.What is frequency?: Number of wavelengths that pass a point in a
certain amount of time
16.What is the function of the metal housing on an x- ray tube?: Protects x-
ray tube and grounds high voltage items
17.What is the function of insulating oil?: Prevents overheating by
absorbing heat
18.What is the function of the aluminum disks?: Filter out weaker long-
wave- length x- rays
19.What is the function of the PID?: Open- ended lead- lined cylinder that
extends from the metal housing of the tubehead
20.What is the function of the transformer?: Alters the voltage of
incoming electricity
21.What is the function of the lead collimator?: Restricts the size of the
x- ray beam
22.What is the cathode?: Negative electrode
23.What is the anode?: Positive electeode
24.What structure in the cathode produces electrons?: Tungsten filament
25.What structure in the anode is converts the bombarding electrons into
x- ray photons?: Tungsten target
26.What is the function of the glass envelope?: Prevents x- rays from
escaping
27.Electron focusing cup: 9
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, DH 338 Exam 3 (Final) | 148 Q&A
28.Cathode (-): 8
29.Tube window: 7
30.Useful x- ray beam: 6
31.Anode (+): 5
32.Copper stem: 4
33.Vacuum: 3
34.Glass envelope: 2
35.Focal spot on tungsten target: 1
36.Filament and electron cloud: 10
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1. Who discovered radiation?: Wilhelm Roentgen
2. When was radiation discovered?: 1895
3. What charge are protons?: +
4. What charge are neutrons?: No charge
5. What charge are electrons?: -
6. What is ionization?: Process of converting atoms to ions
7. What is an ion pair?: Newly positive atom + negative ejected electron
8. What is radiation?: The emission and propagation of energy through
space or a substance in the form of waves or particles
9. What is radioactivity?: The process by which certain unstable atoms
or ele- ments undergo spontaneous disintegration in an effort to
attain a more balanced nuclear state
10.What is X- radiation?: A high energy ionizing electromagnetic radiation
11.What are x- rays?: Weightless bundles of energy (photons)
12.Do x- rays have an electrical charge?: No
13.How fast do x-rays travel?: at the speed of light
14.What is wavelength?: distance b/t the crest of two adjacent waves
15.What is frequency?: Number of wavelengths that pass a point in a
certain amount of time
16.What is the function of the metal housing on an x- ray tube?: Protects x-
ray tube and grounds high voltage items
17.What is the function of insulating oil?: Prevents overheating by
absorbing heat
18.What is the function of the aluminum disks?: Filter out weaker long-
wave- length x- rays
19.What is the function of the PID?: Open- ended lead- lined cylinder that
extends from the metal housing of the tubehead
20.What is the function of the transformer?: Alters the voltage of
incoming electricity
21.What is the function of the lead collimator?: Restricts the size of the
x- ray beam
22.What is the cathode?: Negative electrode
23.What is the anode?: Positive electeode
24.What structure in the cathode produces electrons?: Tungsten filament
25.What structure in the anode is converts the bombarding electrons into
x- ray photons?: Tungsten target
26.What is the function of the glass envelope?: Prevents x- rays from
escaping
27.Electron focusing cup: 9
1/9
, DH 338 Exam 3 (Final) | 148 Q&A
28.Cathode (-): 8
29.Tube window: 7
30.Useful x- ray beam: 6
31.Anode (+): 5
32.Copper stem: 4
33.Vacuum: 3
34.Glass envelope: 2
35.Focal spot on tungsten target: 1
36.Filament and electron cloud: 10
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