Total Internal Reflection of Light and Critical Angle of Refraction Physics
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- Опубликовано: 5 авг 2016
- This physics video tutorial discusses the total internal reflection of light and how to calculate the critical angle of refraction. Total internal reflection occurs when the incident angle exceeds the critical angle. The critical angle is the angle of incidence when the angle of refraction is equal to 90. Total internal reflections occurs when a light ray travels from a material with a high index of refraction to a material with a low index of refraction. The formula needed to find the critical angle is the equation provided by snell's law. This video includes examples and practice problems relating to the critical angle of water and diamond.
Law of Reflection - Geometric Optics:
• Law of Reflection - Ge...
The Mirror Equation:
• Spherical Mirrors & Th...
Refraction of Light:
• Refraction of Light
Snell's Law & Index of Refraction:
• Snell's Law & Index of...
Total Internal Reflection & Critical Angle:
• Total Internal Reflect...
Thin Lens Equation:
• Thin Lens Equation, Op...
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Ray Diagrams:
• Ray Diagrams
The Huygens Principle:
• Huygens Principle - Ph...
Young's Double Slit Experiment:
• Young's Double Slit Ex...
Single Slit Diffraction:
• Single Slit Diffractio...
Diffraction Grating Problems:
• Diffraction Grating Pr...
Polarization of Light Problems:
• Polarization of light ...
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@@lola100yearsago8 the critical angle = the inverse of the nr divided by the ni. { critical
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For the second question, I had put solid (n1) to air (n2) since it's going from solid to air. Then I transposed for the unknown n1. Is the approach still okay as I got the same answer? Also,why was the second medium(air) used as n1 in the video?
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Can you employ the phenomenon of total reflection or refraction to identify the percentage of a pollutant in water? Discuss this by designing a experimental model.
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Is there a way to calculate the angle of the reflected beam in a TIR? Or is that just equal to incidence angle as a normal reflection.
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Currently studying for a physics exam. In example #4, since glass is equal to 1.5 and water is equal to 1.33 (therefore glass has a higher index of refraction than water), shouldn't glass have an angle of 90 degrees and we should solve for the angle on water?
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