Upload
others
View
4
Download
0
Embed Size (px)
Citation preview
SNELLS LAW.notebook
1
April 09, 2014
Apr 712:45 PM
θ1
θ2
air
water
n=
n=
Apr 112:43 PM
Snell’s Law
n1sin01 = n2sin02this salad is yummy
Cole's Law
this salad is yummy
SNELLS LAW.notebook
2
April 09, 2014
Apr 712:45 PM
θ1
θ2
air
water
n1=
n2=
n1sinθ1 = n2sinθ2
380
Apr 112:43 PM
Snell’s LawSnell’s Law Formula
• n1sin01 = n2sin02
• Indices of refracon of the two media n 1 and n2
• Angle of incidence 01
• Angle of refracon 0 2
SNELLS LAW.notebook
3
April 09, 2014
Apr 112:43 PM
Snell’s Law
Interface
Incident RayNormal
Angle of Incidence
Refracted RayAngle of Refracon
θ1
θ2
n1
n2
Apr 112:43 PM
Snell’s Law• When light passes from air into water at an
angle of 600 from the normal, what is the angle of refracon?
SNELLS LAW.notebook
4
April 09, 2014
Apr 112:43 PM
Snell’s Law• In an experiment, a block of cubic zirconia is placed in water. A laser
beam is passed from the water through the cubic zirconia. The angle of incidence is 500, and the angle of refracon is 27 0. What is the index of refracon of cubic zirconia?
Apr 112:43 PM
Total Internal RefleconTotal Internal Reflecon
Light reflects completely off the inside wall of a denser medium (higher index of refracon) rather than passing through the wall into a less dense medium (lower index of refracon).
Example – fiber opcs
SNELLS LAW.notebook
5
April 09, 2014
Apr 112:43 PM
Total Internal RefraconCric al Angle
‐angle of incidence that causes a refracon of 90 0 into a less dense medium
Apr 112:43 PM
1) Finish Part two of Snell's Law Lab
3) Practice Snell's Law Questions (Worksheet)
INCLASS ASSIGNMENT
2) text pg. 441 #13 Pg. 442 #13
SNELLS LAW.notebook
6
April 09, 2014
Apr 81:11 PM
SNELL’S LAW PRACTICE PROBLEMS
1. Using the information given in the following diagram, crefraction for medium B. What is medium B?
Apr 910:01 AM
2. Using the information given in the following diagram, calculate the angle of refraction in the lower medium.
SNELLS LAW.notebook
7
April 09, 2014
Apr 910:01 AM
3. A ray of light hits a surface at an angle of 580 and refracts at an angle of 320. What is the speed of light in this new medium?
Apr 910:01 AM
4. What is the critical angle for light rays passing from sapphire into air?
Page 1Page 2Page 3Page 4Page 5Page 6Page 7