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HW #1 Due:

HW #1 Due:. Ch. 1: P11, P12, P13, P14, PM2. Ch.2: P7, P12. This Lecture:. Chapter 1 (review +). Fundamental Properties of Light. Reading Assignment: All Chapter 1. Chapter 2. Geometric Optics. Reading Assignment: All Chapter 2. Properties of Light. How does it travel?

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HW #1 Due:

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  1. HW #1 Due: Ch. 1: P11, P12, P13, P14, PM2 Ch.2: P7, P12

  2. This Lecture: Chapter 1 (review +) Fundamental Properties of Light Reading Assignment: All Chapter 1 Chapter 2 Geometric Optics Reading Assignment: All Chapter 2

  3. Properties of Light • How does it travel? • How fast does it travel? • What is it that travels? • Is it wave, particle, or just rays?

  4. Light travels in a straight line

  5. Light travels in a straight line • The intensity varies with the square of the distance

  6. Light has momentum (example: comets tail is always facing away from the sun)

  7. Reflection

  8. Refraction

  9. Diffraction silver lining

  10. Velocity (300,000,000 meters/sec) Frequency (Hertz) Wavelength (meters) Light is Wave What is a wave?! distance Harmonic wave: wavelength

  11. amplitude z frequency or wavelength z phase z

  12. Wavefront

  13. Light has color!! Color of the light depends on its wavelength …..

  14. *Ripple Tank Waves http://www.cbu.edu/%7Ejvarrian/applets/waves3/ripple.htm * Longitudinal and Transverse Waves -2 http://acad.ursinus.edu/%7Emtakats/gifcat/wavedemo.html *Waves, ElectroMagnetic http://microscopy.fsu.edu/primer/java/electromagnetic/index.html *Oscillating Charge Field http://www.colorado.edu/physics/2000/applets/fieldwaves.html

  15. Electromagnetic Spectrum

  16. Visible Light Spectrum

  17. Resonance • Spring • Strings (musical instruments) • Antenna • Radio or TV Tuner • Microwave Ovens • Atoms and Light Oscillations have natural frequency (= resonance frequency)

  18. Light sources (thermal) *Color Temperature (Vase) http://microscopy.fsu.edu/primer/java/colortemperature/index.html *Black Body http://jersey.uoregon.edu/vlab/PlankRadiationFormula/index.html

  19. Fluorescent Lamp Light Spectrum of various sources *Phosphorescence: E&M Radiation (Joblonski Diagram) http://microscopy.fsu.edu/primer/java/jablonski/index.html

  20. Laser (Ruby) *E&M Radiation (Absorption and Emission) http://microscopy.fsu.edu/primer/java/exciteemit/index.html * Ruby Laser http://microscopy.fsu.edu/primer/java/laser/index.html End of Chapter 1

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

  22. 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

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

  24. The Lunar Eclipse

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

  26. Depth of Image and more

  27. The effect of pinhole size

  28. Diffraction

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

  30. Law of Reflection Normal

  31. Mirrors • Silvered (first surface, second surface) • Half silvered

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

  33. Sun Pillars and Sub Suns

  34. Ice Crystals

  35. 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.

  36. Sub Sun

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

  38. Sun Pillar

  39. Multiple ReflectionsExample: Second Surface Mirrors

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