1 / 18

C H A P T E R   16 Waves and Sound

C H A P T E R   16 Waves and Sound. 16.1  The Nature of Waves. 16.1  The Nature of Waves. Wave is a traveling disturbance. Wave carries energy from place to place. . Types of waves. There are two basic types of waves: Transverse and longitudinal waves. . Transverse waves.

rafer
Télécharger la présentation

C H A P T E R   16 Waves and Sound

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. C H A P T E R   16Waves and Sound

  2. 16.1 The Nature of Waves

  3. 16.1 The Nature of Waves Wave is a traveling disturbance. Wave carries energy from place to place.

  4. Types of waves There are two basic types of waves: Transverse and longitudinal waves.

  5. Transverse waves

  6. Transverse waves A transverse wave is one in which the disturbance is perpendicular to the direction of travel of the wave. Examples: Light wave, waves on a guitar string.

  7. Longitudinal Waves

  8. Longitudinal Waves Longitudinal wave is one in which the disturbance is parallel to the line of travel of the wave. Example: Sound wave in air is a longitudinal wave.

  9. Water Waves Water waves are partly transverse and longitudinal.

  10. 16.2 Periodic Waves Periodic waves are waves that repeat.

  11. Amplitude, Wavelength, and Period The amplitude, A is the maximum disturbance. The wavelength,λ  is the horizontal length of one cycle of the wave. The period, T is the time required for one complete up/down cycle of the wave.

  12. Frequency Frequency is the number of waves per unit time.

  13. Wave Speed

  14. Wave Speed

  15. Radio Waves FM vs AM: What's the difference? AM: The amplitude of the signal is varied to incorporate the sound information. Frequencies are in kHz. FM: The frequency of the carrier signal is varied to incorporate the sound information. Frequencies are in MHz.

  16. FM vs AMAdvantages and Disadvantages FM signals are not affected by static. With an FM broadcast, slight changes in amplitude don't matter -- since the audio signal is conveyed through changes in frequency, the FM receiver can just ignore changes in amplitude. AM carrier waves have much longer wavelengths than FM carrier waves, and as a result, they can bend around obstacles like mountains and buildings better than FM waves and can travel greater distances before the signal fades.

  17. 16.3. The Speed of a Wave on a String

  18. 16.3. The Speed of a Wave on a String

More Related