Fermat's Principle to explain lenses and mirrors

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SUMMARY

Fermat's principle of least time is utilized to derive the shapes of lenses and mirrors, as explained by Richard Feynman in his video at 57m15s. The principle states that light travels the path that requires the least time, which directly influences the design of optical elements. The discussion highlights the application of this principle in understanding mirror shapes, referencing a specific timestamp at 27m05s for further clarification. This foundational concept is essential for comprehending optical physics and engineering.

PREREQUISITES
  • Understanding of Fermat's principle of least time
  • Basic knowledge of optics and light behavior
  • Familiarity with lens and mirror design principles
  • Awareness of Richard Feynman's contributions to physics
NEXT STEPS
  • Research the mathematical derivation of Fermat's principle in optics
  • Explore the design and application of parabolic mirrors
  • Study the effects of lens curvature on light refraction
  • Investigate Feynman's lectures on physics for deeper insights
USEFUL FOR

Students of physics, optical engineers, and anyone interested in the principles governing light behavior in lenses and mirrors.

isnainidiah
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How do we use Fermat's principle of least time to explain the required shapes of lenses and mirrors?
 
Last edited:
Science news on Phys.org
Here's Feynman's explanation [see 57m15s]
 
How about using fermat's principle for mirrors ?
 
[see 27m05s]
 
Hmm okay, thank you for the video,,
 

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