summary17 - Summary Lecture 17 Wavefronts and Snells Law of...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
Summary Lecture 17 Wavefronts and Snell’s Law of Refraction Smaller velocity Wavefronts closer together Change in direction
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Refraction Medium 1 (n Normal 1 1 ) Medium 2 (n 2 ) 2 Caused by the difference in the speed of light in medium 1 and 2 Index of Refraction n = c/v (n air ~ 1, n Water = 1.33 …) Snell’s Law of Refraction n 1 sin 1 = n 2 sin 2
Background image of page 2
Example A ray of light passes from air (n = 1.0) into glass (n = 1.52) and then into Jell-O. The incident ray makes a 58 0 o angle The incident ray makes a 58.0 angle with the normal as it enters the glass and a 36.4 o angle with the normal in Jell-O. What is the index of refraction in Jell-O? Glass Jell-O 58.0 o 36.4 o
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Total Internal Reflection going from a medium with large n to a medium with small n “refracted” away from normal 1 2 3 n 2 4 c n 1 Critical Angle: sin =n /n Critical Angle: sin C = n 2 /n 1 Total Internal Reflection > C
Background image of page 4
Lenses Lenses
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 6
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 06/03/2011 for the course PHY 112 taught by Professor Beacom during the Spring '11 term at Ohio State.

Page1 / 8

summary17 - Summary Lecture 17 Wavefronts and Snells Law of...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online