1 / 11

Wave Interactions

Wave Interactions. Doppler Effect. Observed change in a sound’s frequency Frequency really doesn’t change Pitch How high or low a sound is Changes with the Doppler effect Close = high pitch = high frequency Far = low pitch = low frequency. Hear It. Train. Siren.

lionel-trujillo
Download Presentation

Wave Interactions

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. Wave Interactions

  2. Doppler Effect • Observed change in a sound’s frequency • Frequency really doesn’t change • Pitch • How high or low a sound is • Changes with the Doppler effect • Close = high pitch = high frequency • Far = low pitch = low frequency Hear It Train Siren

  3. When a wave runs into a new medium, it can … • Bounce Back  • Go Through It  • Go Around It  Reflection Refraction Diffraction

  4. I. Reflection • Reflection – the bouncing back of a wave as it meets a surface or boundary What is a boundary? The point at which 2 media meet.

  5. Free End Fixed End What differences do you see? Notice that wave bounces back with the same amplitude and on the same side Notice that wave bounces back with the same amplitude and on the opposite side

  6. II. Refraction • Refraction – the bending of waves as they pass from one medium to another Note: Refraction is NOT a bending pencil, but the light being bent by the water-air boundary.

  7. Based on fast & slow mediums

  8. III. Diffraction • Diffraction – the bending of a wave as it passes an edge or opening Let’s see what that looks like!

  9. IV. Interference • Interference – the combination of two or more waves that exist in the same place at the same time.

  10. A. Types of Interference • Constructive Interference - interference in which waves combine to produce a bigger wave than original waves • Destructive Interference - interference in which waves combine to produce a smaller wave than original waves

  11. Let’s look at interference in waves

More Related