Internal half of the fresnel zone

  • Thread starter Thread starter harrydj
  • Start date Start date
  • Tags Tags
    Fresnel Internal
Click For Summary
SUMMARY

The discussion focuses on the light intensity I at a point on a screen with a circular hole, specifically analyzing the first Fresnel zone and its inner half. The problem involves plane monochromatic light waves with an initial intensity I0 incident on an opaque screen. The participants clarify that the inner half of the first Fresnel zone is significant for understanding light intensity distribution, while questioning the existence of an outer half. The provided hint directs users to the Wikipedia page on Fresnel zones for further insights.

PREREQUISITES
  • Understanding of Fresnel zones in wave optics
  • Knowledge of plane monochromatic light waves
  • Familiarity with light intensity concepts and calculations
  • Basic principles of diffraction and interference
NEXT STEPS
  • Study the mathematical derivation of Fresnel zone intensity distributions
  • Explore the implications of varying hole diameters on light intensity
  • Learn about the applications of Fresnel zones in optical systems
  • Investigate the relationship between Fresnel zones and diffraction patterns
USEFUL FOR

Students and professionals in optics, physicists studying wave phenomena, and engineers designing optical systems will benefit from this discussion.

harrydj
Messages
1
Reaction score
0

Homework Statement


Plane monochromatic light wave with intensity I 0 is incident normally on an opaque screen with a circular hole. What is the light intensity I of the screen at the point for which the hole:
a) is the first Fresnel zone, the inner half of the first zone,
b) made ​​equal to the first Fresnel zone, and then shut it down half (diameter)?


Homework Equations



Here What is the inner half of the first zone? Is there any outer half for the first zone.

The Attempt at a Solution

 
Physics news on Phys.org
harrydj said:

Homework Statement


Plane monochromatic light wave with intensity I 0 is incident normally on an opaque screen with a circular hole. What is the light intensity I of the screen at the point for which the hole:
a) is the first Fresnel zone, the inner half of the first zone,
b) made ​​equal to the first Fresnel zone, and then shut it down half (diameter)?


Homework Equations



Here What is the inner half of the first zone? Is there any outer half for the first zone.

The Attempt at a Solution


Hint: http://en.wikipedia.org/wiki/Fresnel_zone

What do you notice from here ?
 

Similar threads

  • · Replies 16 ·
Replies
16
Views
4K
  • · Replies 5 ·
Replies
5
Views
2K
  • · Replies 8 ·
Replies
8
Views
2K
  • · Replies 3 ·
Replies
3
Views
4K
  • · Replies 1 ·
Replies
1
Views
2K
Replies
5
Views
2K
  • · Replies 13 ·
Replies
13
Views
8K
  • · Replies 1 ·
Replies
1
Views
3K
  • · Replies 1 ·
Replies
1
Views
1K
Replies
3
Views
2K