Wave behavior
This presentation is the property of its rightful owner.
Sponsored Links
1 / 25

Wave Behavior PowerPoint PPT Presentation


  • 78 Views
  • Uploaded on
  • Presentation posted in: General

Wave Behavior. Unit 7 –Lecture 3. Clarity. Substances have varying levels of clarity – transparent materials allow waves to pass through with minimum or no distortion. Clarity. Substances have varying levels of clarity –

Download Presentation

Wave Behavior

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.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Wave behavior

Wave Behavior

Unit 7 –Lecture 3


Clarity

Clarity

  • Substances have varying levels of clarity –

    • transparent materials allow waves to pass through with minimum or no distortion


Clarity1

Clarity

  • Substances have varying levels of clarity –

    • translucent materials allow waves to pass through them with varying degrees of distortion


Clarity2

Clarity

  • Substances have varying levels of clarity –

    • opaque materials do not allow waves to pass through them

      • waves must be reflected or absorbed


Reflection

Reflection

  • occurs when a wave strikes an object and bounces off of it

    • echos (& echolocation)

    • image in mirror


Reflection1

Reflection

  • Law of Reflection

    • the angle of incidence [input] must equal the angle of reflection [output]


Mirrors

Mirrors

  • mirrors must be smooth so all the angles line up to make a clear picture in the reflection [plan(e/ar)]

    Smooth Surface Rough Surface


Mirrors1

Mirrors

  • Concave

    • “caved in”

    • light rays, etc., converge in the center

    • make the image larger or focus energy


Mirrors2

Mirrors

  • Parabolic

    • Satellite dishes

    • Lighting the Olympic Torch


Mirrors3

Mirrors

  • Convex

    • “curved out”

    • Light rays, etc., spread out from the center

    • Images look smaller, but cover more area


Mirrors4

Mirrors


Refraction

Refraction

  • bending of a wave as it moves from one medium to another

    • the image difference is caused by a change in the speed of the wave


Refraction1

Refraction

  • “edges” of wave “slow down” in a more dense medium and “speed up” in a less dense medium

    • bends towards the “normal” in a more dense medium

    • away from the “normal” in a less dense medium


Refraction2

Refraction

  • depends on the

    • type of medium

    • the angle the wave hits the medium

  • waves of light move faster through air than through water


Refraction3

Refraction

  • Law of Refraction


Refraction4

Refraction

  • Oil & Gasoline Rainbows

    • because of the different densities of oil, gasoline, water, and air, a rainbow-like refraction can form in puddles near well-traveled parking lots


Refraction5

Refraction

  • Lenses act to control the refraction of light to focus it in a more desirable manner.


Diffraction

Diffraction

  • the bending of waves around a barrier

    • if 1 edge, only one curve

    • if 2 edges, both will bend the wave


Diffraction1

Diffraction


Interference

Interference

  • caused by the passing of two waves through one another

    • how the waves line up determines how they will interact


Interference1

Interference

  • constructive interference –

    • crests and troughs line up

    • build on one another

    • are said to be “in phase”


Interference2

Interference

  • destructive interference –

    • crests and troughs don’t line up

    • lessen one another

    • said to be “out of phase”

      • if they are exactly opposite, they will cancel each other out


Interference3

Interference


Homework

Homework

  • FINISH YOUR WAVES PACKET

    • We will be going over it on Monday.

  • complete worksheet on back of notes

  • study for upcoming test = Weds next week


  • Login