Why Can't We See Our Face in Newspapers & Walls?

  • Thread starter Thread starter Tush
  • Start date Start date
  • Tags Tags
    Logic Optics
AI Thread Summary
You cannot see your face in newspapers or walls because these surfaces do not reflect light in an orderly manner. Mirrors have highly polished surfaces that direct light back to the viewer, allowing for a clear reflection. In contrast, walls and newspapers have rough textures that scatter light, preventing a coherent image from forming. This scattering effect makes it impossible to see a reflection on these materials. Understanding the physics of light reflection clarifies why certain surfaces reflect images while others do not.
Tush
Messages
7
Reaction score
0
Ques) Why we cannot see our face in the newspaper and in the wall ?
 
Science news on Phys.org
Well, to "see" your face on something, you need light to bounce of the surface in a orderly fashion. Therefore in highly polished surfaces like mirrors the light gets bounced off in one direction. whereas in something like the wall, the surface is very rough although it might seem "smooth" to touch therefore the light gets scattered and no reflection is seen!
 
ok ...Thanx :smile:
 
Thread 'Simple math model for a Particle Image Velocimetry system'

Thread 'Simple math model for a Particle Image Velocimetry system'

Hello togehter, I am new to this forum and hope this post followed all the guidelines here (I tried to summarized my issue as clean as possible, two pictures are attached). I would appreciate every help: I am doing research on a Particle Image Velocimetry (PIV) system. For this I want to set a simple math model for the system. I hope you can help me out. Regarding this I have 2 main Questions. 1. I am trying to find a math model which is describing what is happening in a simple Particle...
View full post »

Similar threads

I Prism Spectrometer Objective: Optics Question
Replies
9
Views
3K
I Why do we use low-coherence light in Optical Coherence Tomography?
Replies
1
Views
3K
I Light coupling in fiber optic cables
Replies
22
Views
3K
Why can't we use opaque object in optical fibres?
Replies
8
Views
2K
What is the logic behind the mirror symmetry method of solving circuits?
Replies
18
Views
12K
I Confusion about line pairs per millimeter
Replies
4
Views
1K
I Bayes, Hume, lotteries and trustworty newspapers
Replies
47
Views
4K
I Why do we always see interference pattern in Michelson interferometer?
Replies
9
Views
3K
Comic strip Dilbert comes to an end
Replies
17
Views
6K
Why can't we see colors in moonlight?
Replies
3
Views
5K

Hot Threads

Recent Insights

Back
Top