What is Frequency: Definition and 1000 Discussions

Frequency is the number of occurrences of a repeating event per unit of time. It is also occasionally referred to as temporal frequency to emphasize the contrast to spatial frequency, and ordinary frequency to emphasize the contrast to angular frequency. Frequency is measured in hertz (Hz) which is equal to one event per second. The period is the duration of time of one cycle in a repeating event, so the period is the reciprocal of the frequency. For example: if a newborn baby's heart beats at a frequency of 120 times a minute (2 hertz), its period, T—the time interval between beats—is half a second (60 seconds divided by 120 beats). Frequency is an important parameter used in science and engineering to specify the rate of oscillatory and vibratory phenomena, such as mechanical vibrations, audio signals (sound), radio waves, and light.

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  1. R

    Why is my thinking incorrect? -- Block and spring driven by a motor

    Homework Statement An oscillator consists of a block attached to a spring (k=400n/m). At some time t, the position (from equilibrium), velocity, and acceleration of the block are x= .100m, v= -13.6m/s, a= -123m/s^2. What is the frequency? mass of block? amplitude. Homework Equations position...
  2. CivilSigma

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  3. J

    What is the maximum or Nyquist frequency of a Gaussian signal?

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  4. R

    Chemical structure vs excitation frequency (photons)

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  5. H

    Why do higher frequency light waves bend more in a prism?

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  6. U

    MHB What is the relationship between frequency and angular speed?

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  7. N

    What is instantaneous frequency?

    Instantaneous frequency ω(t), is defined as the time derivative of phase. According to a paper by L.Madel, American Journal of Physics 42, 840 (1974); doi: 10.1119/1.1987876, this is significantly different from the frequencies in the Fourier Spectrum of the signal. However, there is no...
  8. Jalo

    I Photodiode bandwidth: why does power decrease with frequency

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  9. A

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  10. U

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  11. O

    Frequency of Modulated Signal: Carrier vs Message

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  12. DariusP

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  13. Nikhil Rajagopalan

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  14. A

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  15. Drugstore Cowboy

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  16. Alex Katko

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  17. DariusP

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  18. S

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  19. F

    How to calculate natural frequency of timing belt

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  20. astroman707

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  21. tworitdash

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  22. M

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  23. G

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  24. CDL

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  25. M

    Does the size of an antenna matter?

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  26. M

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  27. S

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  28. Laserray

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  29. Y

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  30. K

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  31. G

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  32. YMMMA

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  33. SuchBants

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  34. J

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  35. Exidor

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  36. YMMMA

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  37. C

    I Do gravitons have frequency, like photons?

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  38. Helloworld

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  39. mertcan

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  40. B

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  41. bob012345

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  42. Samama Fahim

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  43. john-b

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  44. R

    Interface Wireless Frequency Sensor with Arduino

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  45. prashantakerkar

    Calculators Smartphones apps for accessing Quadcopter Drones

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  46. F

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  47. G

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  48. enter

    I What is the highest frequency of electromagnetic radiation?

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  49. betamu

    Frequency of Reflected Underwater Sound Wave

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  50. SherLOCKed

    Increase in the frequency of sound in a glass of water?

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