Refraction Defraction Reflection

  • Context: Undergrad 
  • Thread starter Thread starter j3wfrobklyn
  • Start date Start date
  • Tags Tags
    Reflection Refraction
Click For Summary
SUMMARY

The discussion focuses on calculating the number of internal reflections of a laser beam in a slab with an index of refraction of 1.45. The laser beam enters the slab at a 39-degree angle of incidence. Given the dimensions of the slab (46mm length and 3.4mm width), the calculations reveal that the beam undergoes multiple internal reflections before exiting the opposite end. The precise number of reflections is determined using Snell's Law and geometric principles.

PREREQUISITES
  • Understanding of Snell's Law for refraction calculations
  • Familiarity with the concept of internal reflection
  • Basic knowledge of angles and geometry
  • Ability to perform calculations involving trigonometric functions
NEXT STEPS
  • Study Snell's Law and its applications in optics
  • Learn about total internal reflection and its conditions
  • Explore geometric optics and ray diagrams
  • Investigate the properties of materials with different indices of refraction
USEFUL FOR

Students in physics or engineering, optical engineers, and anyone interested in the principles of light behavior in different media.

j3wfrobklyn
Messages
2
Reaction score
0
A laser beam traveling in air strikes the mid-
point of one end of a slab of material with
index of refraction 1.45 as shown in the figure
below.

Dimensions of Block 46mm (L) and 3.4mm (W)
Initial ray of light enters the slab from the left side at an angle of incidence of 39 degrees.


Find the number of internal reflections of
the laser beam before it finally emerges from
the opposite end of the slab.
 
Science news on Phys.org


You phrase that as if it were your homework question.
 


lol it is a homework question
 


j3wfrobklyn said:
lol it is a homework question

Well, we have a forum for that.
 

Similar threads

Graduate Total internal reflection for a long time
  • · Replies 4 ·
Replies
4
Views
2K
Optics: refraction and reflection
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Calculating Reflective coefficient for glass slab
  • · Replies 2 ·
Replies
2
Views
3K
The refractive index of an unknown liquid
  • · Replies 1 ·
Replies
1
Views
3K
Undergrad Total internal reflection with Sound?
  • · Replies 3 ·
Replies
3
Views
20K
Optics Problem: Find Smallest Refractive Index of Slab
  • · Replies 3 ·
Replies
3
Views
993
How can I find the minimum index of refraction?
  • · Replies 7 ·
Replies
7
Views
7K
The maximum intensity for light transmitted through a thin film
  • · Replies 2 ·
Replies
2
Views
4K
Graduate Dielectric slab and angle of incidence
  • · Replies 1 ·
Replies
1
Views
2K
Determine the relationship between θB and θA
  • · Replies 20 ·
Replies
20
Views
2K