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Exploring Light: Reflection, Refraction & Mirrors

Delve into the fascinating realm of light through reflections, refractions, and mirrors. Understand the laws governing these phenomena and discover the magic of dispersion and optical density. Learn how curved mirrors distort perception and why objects appear closer or farther in mirrors. Explore the wonders of refraction with Snell's Law and the dispersion of light. Homework guide included!

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Exploring Light: Reflection, Refraction & Mirrors

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Presentation Transcript

  1. Light Reflection and Refraction

  2. Reflection • Law of Reflection

  3. Law of Reflection “normal” line Qi Qr The angle of incidence, Qi, is equal to the angle of reflection, Qr. Qi = Qr

  4. 1.Incident ray of light 2. Reflected ray of light 3. Backward Extension Lines Lines extended backward from the reflected rays of light

  5. Plane (Flat) Mirrors

  6. Curved Mirrors • “Objects in Mirror are Closer than they Appear!”… Why?

  7. Curved Mirrors • Or Not!

  8. Refraction • Angle of Refraction • Optical Density

  9. Refraction • Snell’s Law • the ratio of the sine of the angle of incidence to the sine of the angle of refraction is constant • ni sini = nr sinr • Index of Refraction • nsubstance = c / vsubstance

  10. Dispersion of Light • Dispersion • the separation of light into the spectrum

  11. Dispersion of Light • Water droplets act as lenses causing a dispersion of light, this light then reflects off of the back of the droplet

  12. Homework! Read 29.1 – 29.5

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