Your SlideShare is downloading. ×
0
Day109 28 Feb2008 Waves
Day109 28 Feb2008 Waves
Day109 28 Feb2008 Waves
Day109 28 Feb2008 Waves
Day109 28 Feb2008 Waves
Day109 28 Feb2008 Waves
Day109 28 Feb2008 Waves
Day109 28 Feb2008 Waves
Day109 28 Feb2008 Waves
Day109 28 Feb2008 Waves
Day109 28 Feb2008 Waves
Day109 28 Feb2008 Waves
Upcoming SlideShare
Loading in...5
×

Thanks for flagging this SlideShare!

Oops! An error has occurred.

×
Saving this for later? Get the SlideShare app to save on your phone or tablet. Read anywhere, anytime – even offline.
Text the download link to your phone
Standard text messaging rates apply

Day109 28 Feb2008 Waves

500

Published on

Todays Class Notes

Todays Class Notes

Published in: Education, Technology
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total Views
500
On Slideshare
0
From Embeds
0
Number of Embeds
0
Actions
Shares
0
Downloads
14
Comments
0
Likes
0
Embeds 0
No embeds

Report content
Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
No notes for slide
  • a. Snell's Law   n 1 sin  1 = n 2 sin  2   b. Critical angle ( Symbol:  c ) angle of incidence for which angle of refraction is 90° (as light passes from a medium (n) into air or a vacuum)   sin  c = 1/n   (from nsin  c = 1.00sin 90°)   c. Total internal reflection occurs when angle of incidence is greater than critical angle.   Examples : fiber optics sparkling diamond rainbow d. Dispersion separation of polychromatic light into its component wavelengths as the light enters a dispersive medium obliquely. Different frequencies (colors) of light travel at different speeds through a dispersive medium.   Red, blue, and green light make white   i. Dispersive medium A substance in which the speed of a wave depends on its frequency. Glass is a dispersive medium for light.   Examples : Diamond Rainbow Chandelier Prism   ii. Non-dispersive medium One in which the speed of the wave does not depend on the frequency. A vacuum is non-dispersive for light.
  • Transcript

    • 1. Thursday February 28 Day 109 <ul><li>Schedule </li></ul><ul><ul><li>Wrap Up Waves Today </li></ul></ul><ul><ul><li>Pre-Quiz HW </li></ul></ul><ul><ul><li>Review Tomorrow </li></ul></ul><ul><ul><li>Unit Test Monday </li></ul></ul><ul><ul><li>25 Week MP Ends March 5 </li></ul></ul>
    • 2. Terminology <ul><li>Monochromatic Light </li></ul><ul><ul><li>Light Of A Single Color (Frequency) </li></ul></ul><ul><ul><li>Lasers Are Monochromatic </li></ul></ul><ul><li>Polychromatic Light </li></ul><ul><ul><li>Many Colors (Frequencies) </li></ul></ul><ul><ul><li>Sunlight Appears “White” Because Of How Our Eyes Respond To A Mixture Of Colors Across The Spectrum Of Visible Light </li></ul></ul>
    • 3. Light As A Wave <ul><li>In Our Final Unit Of The Year, We Will Learn That Light Has Both WAVE PROPERTIES And PARTICLE Properties </li></ul><ul><li>In Other Words, Sometimes Light Behaves As A Wave, Sometimes As A Particle </li></ul><ul><li>In This Unit, We Have Only Considered The Wave Properties </li></ul><ul><li>Let’s Summarize </li></ul>
    • 4. Light As A Wave <ul><li>Evidence That Light Behaves As A Wave </li></ul><ul><ul><li>It Has A Wavelength We Can Measure </li></ul></ul><ul><ul><li>Its Frequency Can Be Measured </li></ul></ul><ul><ul><li>It Reflects Like A Wave </li></ul></ul><ul><ul><li>It Refracts Like A Wave </li></ul></ul><ul><ul><li>It Diffracts Like A Wave </li></ul></ul><ul><ul><li>It Exhibits Constructive And Destructive Interference </li></ul></ul><ul><ul><li>It Can Be Polarized </li></ul></ul>
    • 5. Polarization <ul><li>Recall This View Of An Electromagnetic Wave, Such As A Light Wave </li></ul>
    • 6. Polarization <ul><li>Most Light Sources Are Not Light This </li></ul><ul><li>They Normally Consist of Waves In A Variety of Orientations </li></ul><ul><li>This Is How They Would Look In A Head-On and an Oblique View </li></ul>
    • 7. Polarization <ul><li>We Can Simplify This Complex View Into A Wave With Half Of Its Waves Oriented Horizontally And Half Vertically </li></ul><ul><li>Here Is A Head-on View Of Simplified UNPOLARIZED Light </li></ul>
    • 8. Polarization <ul><li>When A Wave IS POLARIZED, One Of The Orientations Is Blocked </li></ul><ul><li>One Material That Can Do This Is A Polaroid Filter </li></ul>
    • 9. Polarization <ul><li>A Picket Fence Analogy Can Be Used </li></ul>
    • 10. Polaroid Material
    • 11. Polarizing Sunglasses <ul><li>Link To Animation </li></ul>
    • 12. Homework <ul><li>Waves Pre-Quiz </li></ul><ul><ul><li>Pay Special Attention To Part II Questions (#64-#80), Including Measuring and Constructing Reflected and Refracted Rays </li></ul></ul><ul><ul><li>Use Your Written Notes </li></ul></ul><ul><ul><li>Use Posted Class Notes </li></ul></ul><ul><ul><ul><li>First Day Of Waves Was January 29 </li></ul></ul></ul><ul><ul><li>Use Your Reference Tables </li></ul></ul>

    ×