Explain to me the the physics behind this picture?

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SUMMARY

The discussion centers around the physics of light refraction as it relates to an image involving a white wall and a dark wall viewed through water. Participants confirm that refraction is the key phenomenon at play, explaining how light behaves differently when passing through water compared to air. Specifically, light reflects off the walls and is redirected by the water, altering the perceived direction of the light to the observer's eyes. This results in a visual effect where the colors and patterns appear inverted due to the brain's processing of the light's path.

PREREQUISITES
  • Understanding of basic optics, specifically light behavior.
  • Familiarity with the concept of refraction in physics.
  • Knowledge of how the human brain interprets visual information.
  • Basic principles of reflection and light propagation.
NEXT STEPS
  • Research the laws of refraction, including Snell's Law.
  • Explore the concept of total internal reflection in different mediums.
  • Study the human visual system and how it processes light direction.
  • Investigate practical applications of refraction in lenses and optical devices.
USEFUL FOR

This discussion is beneficial for physics students, educators, and anyone interested in the principles of optics and visual perception, particularly in understanding how light interacts with different materials.

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Yes, it has everything to do with refraction.

Light bounces off the white wall and if the glass were not there, the light would reach your eyes in the same pattern as the coloring of the wall.

However, when light bounces off the white wall and goes through the water, refraction redirects it so that it appears to come from the direction of the dark wall. Similarly when light bounces off the dark wall and goes through the water, refraction redirects it so that when it hits your eyes, it appears to come from the direction of the white wall.

Of course, your brain does some direction reversal to make everything "right side up", so that image pattern is not what goes directly into you eyes.
 
Last edited:
Thanks!
 

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