1 / 14

Chapter 15: Refraction

Chapter 15: Refraction. Section 1: Refraction. Refraction. Light’s speed and direction change when it enters a different medium video - 10 min. Terms to know. incident ray refracted ray angle of incidence angle of refraction normal (line) critical angle.

sheng
Download Presentation

Chapter 15: Refraction

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. Chapter 15: Refraction Section 1: Refraction

  2. Refraction • Light’s speed and direction change when it enters a different medium • video - 10 min

  3. Terms to know • incident ray • refracted ray • angle of incidence • angle of refraction • normal (line) • critical angle

  4. (1) Light entering from less to more dense medium, θi > θr • (2) Light entering from more to less dense medium, θi < θr

  5. Our brain thinks that light moves in straight line

  6. Incident Ray vs. Emergent Ray

  7. Example

  8. Critical Angle • Critical angle = the incident angle when the refracted angle is 90 °

  9. Snell’s Law • Snell's law: video (14 min)

  10. Snell’s Law • Incident ray vs. refracted ray • index of refraction = n

  11. Indices of refraction Greater the index, slower the velocity and smaller angle of refraction

  12. LIGHT IN TWO MEDIA

  13. Example 15A, Pg 566 A light ray of wavelength 589 nm (produced by a sodium lamp) traveling through air strikes a smooth, flat slab of crown glass at an angle of 30.0˚ to the normal. Find the angle of refraction, θr.

  14. Reflection • Normal line • An angle measured from the normal line • angle of incidence= angle of reflection • Total Internal Reflection • video - 5 min

More Related