Newton's Rings: Darker or Brighter Central Spot?

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SUMMARY

The discussion centers on the phenomenon of Newton's Rings, specifically addressing whether the central spot appears darker or brighter when light is transmitted at the contact point. It is established that the presence of a thin layer of air at the contact point causes a 180° phase shift, resulting in a dark central spot. Participants emphasize the importance of understanding the formation of these rings to grasp the implications of light transmission methods used in experiments.

PREREQUISITES
  • Understanding of wave optics and interference patterns
  • Familiarity with Newton's Rings and their formation
  • Knowledge of phase shifts in light waves
  • Basic principles of light transmission and reflection
NEXT STEPS
  • Research the mathematical derivation of Newton's Rings
  • Explore the impact of varying air thickness on interference patterns
  • Learn about phase shifts in different mediums
  • Investigate experimental setups for observing Newton's Rings
USEFUL FOR

Students of physics, optical engineers, and anyone interested in the principles of wave interference and light behavior in thin films.

oreo
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If light is transmitted at a point of contact in Newton's rings. The central spot will be darker or brighter?
 
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If you understand how Newtons rings are formed, what do you think and why?
 
CWatters said:
If you understand how Newtons rings are formed, what do you think and why?
Actually I can't understand what the word "transmission at contact point" here means. I know that there is thin layer of air at contact point due to which there is phase shift of 180° which results in dark point at mid.
 

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