Waves and Optics

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A spiritual and educational look at Waves and Optics that will blow your mind!!!

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Waves and Optics

  1. 1. Waves and Optics Nisha Issac (: & Ethan Munguia
  2. 2. Interference <ul><li>When two waves pass through the same region of space at the same time </li></ul><ul><li>2 types: </li></ul><ul><ul><li>Constructive: crest to crest; larger amplitude </li></ul></ul><ul><ul><li>Destructive: crest to trough; resultant is zero </li></ul></ul>
  3. 3. Diffraction <ul><li>Refers to the ability of waves to bend around obstacles </li></ul><ul><li>Amount of diffraction depends on the wavelength of the waves and the size of the obstacle. </li></ul>
  4. 4. Dispersion of light <ul><li>Spreading of white light </li></ul><ul><li>Dispersion of light in a transparent material occurs because the index of refraction of the material varies the wavelength. </li></ul><ul><ul><li>Index of refraction is higher for shorter wavelengths </li></ul></ul>
  5. 5. Electromagnetic Spectrum <ul><li>Radio waves, Microwaves, Infrared, Ultraviolet, X-Rays, Gamma Rays </li></ul>
  6. 6. Reflection <ul><li>“ Bouncing” off of a wave of a surface; exact angle </li></ul><ul><li>Angle of incidence </li></ul><ul><li>Angle of reflection </li></ul>
  7. 7. Refraction <ul><li>Change in direction of a wave when it passes into a new substance </li></ul><ul><li>Reason it changes direction or bends is because each different substance has its own effect on speed of light. </li></ul><ul><li>Index of refraction </li></ul>
  8. 8. Mirrors <ul><li>Reflective surfaces </li></ul><ul><li>Convex and Concave </li></ul><ul><li>Has a focal point, where all the light directed at that mirror converges or diverges and the distance between the mirror and that point is the focal length. </li></ul>
  9. 9. Lenses <ul><li>Has a focal point </li></ul><ul><li>Radius of curvature of a lens is exactly twice the focal length. </li></ul>
  10. 10. Important Formulas <ul><li>θ = the angle of spread of a wave after passing through a single slit opening </li></ul><ul><li>λ = wavelength </li></ul><ul><li>fn = the nth frequency in a series of resonant frequencies </li></ul><ul><li>v = speed of the wave </li></ul><ul><li>L = length </li></ul><ul><li>D = width of an opening through which a wave will diffract </li></ul>

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