Light beams and their reflection

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SUMMARY

This discussion centers on the visibility of laser beams and their reflections in mirrors, particularly under varying conditions of illumination and smoke presence. Participants clarify that the visibility of the laser beam in smoke is due to light scattering off smoke particles, which then reaches the observer's eyes. The conversation also touches on the concept of virtual images formed by mirrors, emphasizing that reflections occur without a visible link to the source of the light. The consensus is that while the laser beam is visible in smoke, its reflection in a mirror does not require a direct connection to the source.

PREREQUISITES
  • Understanding of light scattering principles
  • Familiarity with virtual images in optics
  • Knowledge of laser operation and behavior
  • Basic concepts of reflection in mirrors
NEXT STEPS
  • Research the physics of light scattering and its applications
  • Study the properties of virtual images and their formation in mirrors
  • Explore the behavior of laser light in different mediums
  • Investigate the effects of smoke and particulate matter on light visibility
USEFUL FOR

Physics students, optical engineers, laser technicians, and anyone interested in the behavior of light and reflections in various environments.

  • #61
As far as I am concerned, this thread can be closed.
 
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  • #62
That was the “horticulture” saying, iirc.
 
  • #63
The problem seems to be not that @elou doesn't understand our explanations, it is that he doesn't believe them. Obviously, people can believe whatever they wish. That doesn't mean they can call it science.

I think at this point, the best advice is that he spend the $5 on a cheap laser pointer and see whatever what he has been told matches observation or not.
 
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  • #64
Here's another thing to explain. The image in a mirror is reversed, left to right, right? Why is it not also reversed top to bottom? Is it an effect of gravity? Will it be different in outer space? I think if @elou can work this out he will be on his way to answering the laser question.
 
  • #65
elou said:
As far as I am concerned, this thread can be closed.
I am glad we could help.
 

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