How Do I Calculate the Focal Distance?

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SUMMARY

The discussion centers on calculating the focal distance of a lens with a radius of curvature (R) of 0.7 meters and a refractive index (n) of 1.8. Participants emphasize the importance of using the lens maker's equation, which relates these parameters to determine the focal length. The conversation encourages users to engage with the calculations and share their progress for further assistance.

PREREQUISITES
  • Understanding of the lens maker's equation
  • Knowledge of optical properties, specifically refractive index
  • Familiarity with radius of curvature concepts
  • Basic algebra for solving equations
NEXT STEPS
  • Research the lens maker's equation and its application
  • Explore the relationship between refractive index and focal length
  • Learn about different types of lenses and their properties
  • Practice calculations involving focal distance using various lens parameters
USEFUL FOR

Students in optics, physics enthusiasts, and anyone involved in lens design or optical engineering will benefit from this discussion.

SFBKR
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I cannot figure out focal distance and the like, is there anyway I can get a walkthrough?
the radius of curvature (R) to 0.7 m and the lens’s refractive index (n) to 1.8 . anyone?
 
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Welcome to PF!

Hi SFBKR! Welcome to PF! :smile:
SFBKR said:
I cannot figure out focal distance and the like, is there anyway I can get a walkthrough?
the radius of curvature (R) to 0.7 m and the lens’s refractive index (n) to 1.8 . anyone?

What equations do you think will help?

Show us how far you get.
 

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