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Exploring Geometric Optics: Shadows, Reflection, and Mirrors

Dive into the world of geometric optics, including shadows, reflection, and mirror properties. Learn about refractive index, light rays, diffraction, and more. Explore fascinating phenomena like sun pillars, sub-suns, and reflections. Discover the secrets behind pinhole cameras and why metals reflect light. Enhance your knowledge of optics and embrace the wonders of light manipulation.

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Exploring Geometric Optics: Shadows, Reflection, and Mirrors

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  1. HW #2, Due Sep. 7 Chapter 2 P7, P12, P16, PH1, PH2

  2. This Lecture: Chapter 2 Geometric Optics Reading Assignment: All Chapter 2 By the way, what is refractive index?!!

  3. Geometrical Optics (Chapter 2) When objects are much larger than the wavelength Light Rays (Ray Optics)

  4. Shadows *Shadow-point source http://www.techxhome.com/lightsite/optics/shadows/pointShadow.html *Shadow: Extended Source http://www.techxhome.com/lightsite/optics/shadows/extendedShadow.html

  5. SUN Moon Earth Solar Eclipse: Aug. 11 1999

  6. The Lunar Eclipse

  7. Pinhole Camera *Pinhole Camera http://www.techxhome.com/lightsite/optics/pinholes/pinhole.html

  8. Depth of Image and more 2 pinholes

  9. The effect of pinhole size

  10. Diffraction

  11. Reflection *Oscillating Charge Field http://www.colorado.edu/physics/2000/applets/fieldwaves.html

  12. Law of Reflection Normal

  13. Mirrors Why metals reflect light? Why do they appear certain color? Why can we listen to radio stations far away? • Silvered and half-silvered mirrors • First-surface and second-surface mirrors *Oscillating Charge Field http://www.colorado.edu/physics/2000/applets/fieldwaves.html

  14. Grazing Incidence Reflection (glass windows, water surfaces, waxed floors, etc.) • Reflectivity (how much is reflected?)

  15. Who sees me in the mirror?! (field of view)

  16. Sun Pillars and Sub Suns

  17. Ice Crystals

  18. Sub Sun A bright subsun looking downwards from 11,000m over Italy, late afternoon 18th July 1995. The halo was intermittently visible over the southern and central parts of the country covered by a thin cirrus sheet. The halo elongated and contracted as the tilts of the plate crystal mirrors changed. Reflections from lakes and rivers shine through the cloud. Video by Les Cowley.

  19. Sub Sun

  20. http://www.members.tripod.com/~regenbogen/englisch/atlas.htm

  21. Sun Pillar

  22. Multiple ReflectionsExample: Second Surface Mirrors

  23. Corner Reflectors

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