Infinite Reflections: Explaining Mirror Physics

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    Infinite Mirror Physics
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SUMMARY

The phenomenon of infinite reflections occurs when two mirrors face each other, allowing light to reflect multiple times between them. Each reflection creates a new image, starting with the first image formed by the initial reflection of the object. This process continues, generating successive images as the light reflects back and forth. While theoretically, perfect mirrors would allow for infinite reflections, real-world factors such as light absorption by air and the mirrors themselves result in diminishing visibility of these reflections, leading to dark regions in the reflected images.

PREREQUISITES
  • Understanding of basic optics principles
  • Familiarity with light reflection and refraction concepts
  • Knowledge of mirror types and their properties
  • Basic physics of light energy absorption
NEXT STEPS
  • Research the properties of different types of mirrors, such as plane and concave mirrors
  • Explore the physics of light absorption in various mediums
  • Learn about the mathematical modeling of light paths in reflective systems
  • Investigate practical applications of infinite reflections in art and design
USEFUL FOR

Students of physics, optical engineers, artists exploring reflective installations, and anyone interested in the principles of light and reflection.

AaronGaTech
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When you use two mirrors facing each other, an object in between them can be seen a lot of times. I understand why, but can really describe it in any detail. Can anybody explain with some depth why this happens.
 
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It is because light is reflected A LOT of times :biggrin: Light from the object forms the 1st image when reflected by one mirror, then forms the 2nd image when reflected by the other mirror, and then the 3rd image, 4th image and so on are formed in the same way. You may understand it in another way: the object first forms 2 images via 2 mirrors; then the 2 images form another 2 "images of image", and then there are another 2 images formed, etc.

Theoretically, if the reflection is perfect, then you will have light reflected infinite times. In fact, light energy loses gradually on its path (the air and the mirrors do absorb light energy), so when you look at one of the two big mirrors, you will see some dark regions. It's kind of scary when standing between two big mirrors in the fitting room :rolleyes:
 

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