Properties of light
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This document discusses key properties of light including reflection, refraction, diffraction, and interference. Reflection occurs when light bounces off a surface, following the law that the angle of incidence equals the angle of reflection. Refraction is the bending of light when passing from one medium to another at different speeds. Diffraction causes light to bend around barriers depending on the wavelength and barrier size. Interference results from the interaction of crests and troughs of light waves, producing constructive or destructive interference.
Properties of light
- 1. Light Wave Properties of Light Reflection Refraction Diffraction Interference
- 2. Reflection Reflection when a wave strikes an object and bounces off
- 3. Reflection incident ray reflected ray Normal Surface
- 4. Reflection
- 5. Reflection incident ray reflected ray Normal Surface
- 6. Reflection Normal-line perpendicular to the reflecting surface. Incident ray/incoming ray-the ray that hits the barrier/surface. Angle of incidence-angle formed by the incident ray with the normal.
- 7. Reflection Angle of reflection-angle formed by the reflected ray with the normal.
- 8. Reflection incident ray reflected ray Normal Surface
- 9. Reflection Law of Reflection the angle of incidence equals the angle of reflection The incident ray, reflected ray and the normal lie on the same plane
- 10. Fiber Optics Total Internal Reflection •when all light is reflected back into the denser medium Refraction
- 12. Refraction Refraction bending of waves when passing from one medium to another
- 13. Refraction Refraction caused by a change in speed •slower (more dense) refracted ray bends toward the normal •faster (less dense) refracted ray bends away from the normal
- 22. Diffraction Diffraction bending of waves around a barrier depends on the wavelength and size of the opening barrier.
- 24. Diffraction Gratings glass or plastic made up of many tiny parallel slits may also be reflective spectroscopes, reflective rainbow stickers, CD surfaces Diffraction
- 26. Interference When two waves meets, they have an effect with each other. constructive when the crest of one wave meet the crest of the other one
- 27. Interference destructive when the crest of one wave meet the trough of the other wave
- 28. Interference constructive brighter light destructive dimmer light
- 29. Interference Thin Films - Bubbles & Oil Slicks interference results from double reflection