Light/radio waves radiate in all direction

  • Context: Undergrad 
  • Thread starter Thread starter rajeshmarndi
  • Start date Start date
  • Tags Tags
    Direction Waves
Click For Summary

Discussion Overview

The discussion revolves around the behavior of light and radio waves, particularly focusing on how these waves can be directed or focused despite their tendency to radiate in all directions. Participants explore concepts related to reflection, diffusion, and the principles behind devices like radar and VOR systems.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant questions how light can be focused in one direction when it typically radiates in all directions after reflection.
  • Another participant notes that all waves follow the laws of reflection and suggests that a single wave does not split, although they express uncertainty regarding quantum mechanics.
  • A participant introduces the concept of diffusion, explaining it as the scattering of light into all directions, contrasting it with specular reflection where light reflects at equal angles.
  • There is a request for clarification on what exactly splits in the context of wave behavior.
  • Another participant asks how light from a flashlight can be directed to reach our eyes, indicating interest in practical applications of these principles.
  • A later reply posits that a ray radiates in all directions, reinforcing the wave nature of light.

Areas of Agreement / Disagreement

Participants express differing views on the behavior of light and waves, particularly regarding the concepts of diffusion and reflection. The discussion remains unresolved with multiple competing perspectives on how waves can be focused.

Contextual Notes

Some participants express uncertainty about specific aspects of wave behavior, particularly in relation to quantum mechanics and the definitions of diffusion versus reflection.

Who May Find This Useful

Individuals interested in wave behavior, optics, radar technology, and the principles of reflection and diffusion in physics may find this discussion relevant.

rajeshmarndi
Messages
319
Reaction score
0
how a light is able to focused in one direction?
after the light gets reflected in the reflectors or dishes it is out in the open space and then it should be radiating in all direction

same is in the case of working principle of radar and rotating signal from VOR(vhf omni-directional radio range) in which the aircraft receive the rotating signal only when it is directed towards it.

thanks in advance.
 
Science news on Phys.org
All waves follow the laws of reflection.A single wave does not split up(I'm not sure about this reading an argument in QM)
What you might be interested in here is diffusion of waves by absobers and transmitters(for eg, sound transferred to the handle of a tuning fork propogates in all directions perpendicular to the length of the vibrator)
 
Last edited:
yes and thxx.
what is it that split, if u could explain further.
 
Diffusion is the scattering of incident light into all directions. Specular reflection is when the incident light is reflected at an angle equal to the angle of incidence. That is, a straight ray strikes a surface and a straight ray is reflected back. Any time we wish to focus a wave we simply use a scatterer that will have specular reflections.
 
also if u can explain how the light from a flashlight focused in a different direction reaches our eyes
 
Born2bwire: doesn't a ray radiate in all direction as after all its a wave
 

Similar threads

  • · Replies 35 ·
2
Replies
35
Views
5K
  • · Replies 7 ·
Replies
7
Views
2K
  • · Replies 17 ·
Replies
17
Views
3K
  • · Replies 42 ·
2
Replies
42
Views
3K
  • · Replies 24 ·
Replies
24
Views
3K
  • · Replies 5 ·
Replies
5
Views
3K
  • · Replies 5 ·
Replies
5
Views
7K
  • · Replies 10 ·
Replies
10
Views
3K
  • · Replies 39 ·
2
Replies
39
Views
7K
  • · Replies 1 ·
Replies
1
Views
1K