1 / 7

Refraction and Polarization of Light 3/10/04

Refraction and Polarization of Light 3/10/04. Thursday: group project and in-class exercises Friday: Waves & Particles Coming up on Friday March 26 – Saturday March 27 – Physics Conference – Nobel Laureate Leon Lederman (Fri. 8 pm) – Student Poster Presentations. Law of Reflection.

callum
Download Presentation

Refraction and Polarization of Light 3/10/04

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. Refraction and Polarization of Light 3/10/04 • Thursday: group project and in-class exercises • Friday: Waves & Particles • Coming up on Friday March 26 – Saturday March 27 • – Physics Conference • – Nobel Laureate Leon Lederman (Fri. 8 pm) • – Student Poster Presentations

  2. Law of Reflection “angle of incidence = angle of reflection” n1 n2 rfl rfr qrfl qrfr qi Law of Refraction “Snell’s Law” i

  3. Related Questions: • Where does the “Law of Reflection” come from? • Why does light change speed in different media? • Why does the frequency of light remain constant in different media? Has to do with the electromagnetic nature of light and the interaction of electromagnetic radiation with matter  the electric field interaction with the electrons

  4. Electromagnetic Radiation Review Changing E  Changing B  Changing E  Changing B, … How to get these kinds of changing fields?  Accelerated charges http://webphysics.davidson.edu/Applets/Retard/Retard_FEL.html Polarized vs. Unpolarized

  5. Re-Radiation + Interference/Diffraction • Reflection • Changing speeds • Polarization Polarization Absorption Reflection (video demo) Scattering (video demo)

  6. a q Not all wavelengths are equal… Consider single slit diffraction:

  7. Different wavelengths interfere diffract refract scatter Differently  “dispersion”  rainbows! Scattering: longer wavelengths diffract more…  bend around corners  get around obstacles more than shorter wavelengths (video demo)

More Related