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What is light?

What is light?. Wave Particle. Wave Particle Duality:. Speed, Frequency & Wavelength of Light. Relationships ? Frequency Amplitude . Fill in the missing blanks…. Wavelength Frequency Speed Color. Visible Spectrum.

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What is light?

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  1. What is light? WaveParticle Wave Particle Duality:

  2. Speed, Frequency & Wavelength of Light Relationships? Frequency Amplitude Fill in the missing blanks… WavelengthFrequency SpeedColor

  3. Visible Spectrum Express each wavelength in meters and calculate the corresponding frequency..

  4. Do Now: How is light different from a mechanical wave? Name 1 phenomena that light undergoes to prove light is a wave. What is the wave comprised of ? Name a phenomena/experiment that proves light is a particle. What phrase do we use to describe the fact that light behaves as both a wave and a particle? On a trip to Alaska, you notice the Aurora Borealis. Your spectrometer detects a wavelength of 550nm. 6) What is this wavelength in meters? What is the frequency of the light? What color is it?

  5. Ray Model of Light Reflection of Light Rays… Law of Reflection: If light is incident upon a mirror at 35°. Draw the incident ray and the reflected ray labeling each. Specular Reflection vsDiffuse Reflection

  6. Mirrors

  7. Mirrors

  8. Convex vs Concave Mirrors

  9. Do Now: How far is a lightyear? If light with a frequency of 5X1017Hz is traveling through space at the speed of light, what is the wavelength? What type of radiation is it? If the moon is 3.9X108m away from Earth, how long does it take light to reach us? Why is it that we can see the moon?

  10. Refraction- AnalogyRefraction of Light Ray What variables change upon Refraction?

  11. Rays Entering New Media (Mediums) Optical Density:Optical Density:

  12. Index of Refraction & Snell’s Law Index of Refraction- Snell’s Law- How fast does light travel in… a) air b) crown glass If the angle of incidence at the air/glass interface is 35°, what is the angle of refraction? At what angle will the light re-enter the air?

  13. Which material has the highest index of refraction?

  14. Mathematical Relationships A ray of light with a wavelength of 500nm is incident on a block of fused Quartz at 25°. The light ray strikes the interface 3m from a wall set up perpendicular to the quartz… a) What is the frequency and color of the light wave? b) What is the wavelength of the wave in the quartz? c) What is the speed of the wave in the quartz? d) How far up the wall with the reflected wave strike? Bonus: How far below the bottom surface of the quartz will the refracted ray strike the wall if the block of quartz is 4cm thick?

  15. Working with Snell’s Law What is the index of refraction for the glass and the water? Where should the fisherman aim his spear to catch the fish? Why? What 3 things can happen when a wave is incident upon a new medium?

  16. Total Internal Reflection Critical Angle: Critical Angle Below At Beyond

  17. Dispersion - Explain how one sees a rainbow starting with white light from the sun. Be specific..

  18. Diffraction & Interference of Light Thin Film Interference

  19. Polarization- Polarizing Lenses:

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