21
11. Vibration testing
12. Vibration diagnostics
13. Vibration displacement
14. Vibration velocity
15. Vibration acceleration
16. Rectilinear vibration
17. Plane vibration
18. Space vibration
19. Translational vibration
20. Angular vibration
21. Peak-to-peak value
22. Peak value
23. Mean value of modulus
24. Room-mean-square value
25. Periodic oscillation
26. Period
27. Frequency of periodic oscillation
28. Synchronous oscillations
29. Harmonic oscillation
30. Amplitude
31. Phase
32. Initial phase
33. Phase difference
34. Angular frequency
35. Phasor
36. In-phase oscillations
37. Antiphase oscillations
38. Almost harmonic oscillation
39. Beats
40. Beat frequency
41. Harmonic analysis
42. Harmonic
43. Harmonic number
44. First harmonic
45. Higher harmonic
46. Spectrum
47. Frequency spectrum
48. Discrete spectrum
49. Continuous spectrum
50. Amplitude spectrum
51. Phase spectrum
52. Power spectrum
53. Spectral analysis
54. Dominant frequency
55. Quasi-periodic oscillation
56. Decaying oscillation
57.
58. Level
59. Frequency band
60. Decade
61. Octave
62. One-half octave