Is invisibility really achieved?

  • Context: High School 
  • Thread starter Thread starter Arslan
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Discussion Overview

The discussion centers around the concept of invisibility, specifically whether it can be achieved through the bending of light. Participants explore theoretical possibilities and practical limitations related to this idea.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant questions the feasibility of achieving invisibility by bending light, suggesting it may still be a myth.
  • Another participant describes theoretical solutions involving meta-materials that can bend light to render objects invisible from all angles, noting that these materials have a hollow center for concealing ordinary objects.
  • This participant also mentions that while such meta-materials exist, they require special conditions that currently make practical applications unfeasible.
  • There is a suggestion that while the theoretical groundwork is promising, a practical invisibility cloak remains a distant goal.
  • A humorous remark is made about the initial question, indicating a light-hearted tone in part of the discussion.

Areas of Agreement / Disagreement

Participants express differing views on the current state of invisibility technology, with some highlighting theoretical possibilities while others remain skeptical about practical implementation. No consensus is reached regarding the feasibility of achieving invisibility.

Contextual Notes

The discussion reflects limitations in current technology and the need for specific conditions for meta-materials, which may not yet be achievable in practical applications.

Arslan
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Is invisibility really achieved?

are we really able to bend lighth or its still a myth?
 
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Have a glass of water handy?
 


There are solutions for a sphere that bends light in a way that it appears to not be there at all and remains invisible when viewed from any direction. It has a hollow center where an ordinary object may be concealed. These solutions require meta-materials with refraction indices less than 1. Such meta-materials do exist, but currently, require some very special conditions that make them impractical for building something out of.

I have not heard about anyone actually building one of these, but things look promising at least. However, something even remotely resembling a practical invisibility cloak is still a long way away.
 


You seem to have spilled your jar of question marks.
 

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