How Does the Index of Refraction Affect Light Speed in Different Materials?

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Homework Help Overview

The discussion revolves around the index of refraction and its effect on the speed of light in different materials, specifically table salt and diamond. Participants are exploring how to calculate the speed of light in these substances based on their refractive indices.

Discussion Character

  • Exploratory, Conceptual clarification, Problem interpretation

Approaches and Questions Raised

  • Participants discuss the formula for the index of refraction and its application to find the speed of light in table salt. There is also a new question regarding the angle of refraction when light passes from diamond to air, prompting inquiries about the starting point for this calculation.

Discussion Status

The discussion includes attempts to clarify the formula for the index of refraction and its application. Some participants express confusion about the calculations, while others indicate they have made progress in understanding the problem. Multiple interpretations of the new question regarding diamond and water are being explored.

Contextual Notes

Participants are working under the constraints of homework rules, which may limit the amount of direct assistance they can receive. There is an emphasis on understanding the concepts rather than simply obtaining answers.

Bk8907
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Speed of light. I NEED HELP! PLEASE!

Homework Statement



The index of refraction of table salt is 1.54 . What is the speed of light in table salt?

Homework Equations





The Attempt at a Solution



I NEED HELP!
 
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Can you post the forumal for index of refraction?
 
n=c/v. there is the formula
 
So what is stopping you from getting the speed of light in salt?
 
yah, i just figured it out. I didn't think it would be that easy to solve. ha ha
 
new question though...

ok, so diamond has an index of refraction of 2.42. Suppose that a rectangular block of diamond is immersed in a tank of water and that a ray of light is passing through the dimaond makes an angle of incidence of 25 degrees in the diamond. What is the angle of refraction with the normal in the air?

How do I even start?
 

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