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Understanding Light Refraction: Prisms, Rainbows, and Lenses

Explore how objects bend light through refraction, revealing the beauty of prisms and rainbows. As light waves enter and exit a prism, they change directions, separating white light into its spectrum of colors. Rainbows form when sunlight interacts with water droplets in the air, acting like tiny prisms. Discover the differences between convex and concave lenses, where convex lenses magnify objects and may invert images, while concave lenses reduce size and keep images upright. Understand how corrective lenses help improve vision by adjusting the focal point.

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Understanding Light Refraction: Prisms, Rainbows, and Lenses

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Presentation Transcript

  1. How Do Objects Bend Light?

  2. Prisms • As light waves enter, and exit, a prism the light waves change directions. • Each color refracts a slightly different amount. • This separates the white light into its component colors.

  3. Objects, whether transparent or opaque, appear to be a certain color because of the other colors they absorb.

  4. Rainbows • May form anytime water droplets are in the air. • The droplets act like tiny prisms. • Not all rainy days have rainbows because you have to have sunlight too.

  5. Convex lens • Thicker in the middle • Objects appear to be LARGER • Objects may appear to be upside down

  6. Concave lens • Thicker at the edges • Objects appear to be smaller • Objects always appear upright

  7. Convex or Concave?

  8. Mirrors can be convex and concave too!

  9. Each of your eyes contains a convex lens.

  10. Some people have trouble seeing because of the shape of their eyes.

  11. Corrective lenses, glasses or contacts, help get the focal point back on the retina.

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