=Which Color is Brightest: Red, Green, or Blue Light?

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    Color Green Light
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Discussion Overview

The discussion revolves around the brightness of red, green, and blue monochromatic light, specifically questioning which color is perceived as brightest and which emits the highest radiant flux. The scope includes conceptual understanding of light perception and the factors influencing brightness.

Discussion Character

  • Conceptual clarification, Debate/contested

Main Points Raised

  • One participant asks which color is brightest and which has the highest radiant flux, indicating a need for comparative analysis.
  • Another participant suggests that the question lacks sufficient information, comparing it to asking about sound loudness without context.
  • A different participant notes that brightness is related to factors such as convergence angle and bandwidth, emphasizing the importance of collimation in determining perceived brightness.
  • One participant references a source stating that the human eye is most sensitive to green light (555 nm), suggesting that green light would be perceived as the brightest by humans due to its stimulation of two types of cones in the eye.

Areas of Agreement / Disagreement

Participants express differing views on how to approach the question of brightness, with some emphasizing the need for additional information and others providing insights into human perception of light. No consensus is reached on a definitive answer.

Contextual Notes

The discussion highlights limitations in the initial question, including the need for more specific information about the conditions under which brightness is evaluated and the factors that influence perception.

rycw
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which colour is brightest (red monochromatic light, green monochromatic light and blue monochromatic light )? and which light will give highest radiant flux? why?
Thank you
 
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This is like asking, "which sound is loudest: bass, treble, or midrange?"

In other words, you need more information! :confused:
 
If you know the wave length of each light you can try to find its frequency...
As jtbell said: it is somewhat difficult to say with less information that you gave.
But brightness is something related to convergence angle, bandwidth, etc..i.e. it mainly depends on collimation.
 
http://hypertextbook.com/facts/2007/SusanZhao.shtml" : "The eye is most sensitive to green light (555 nm) because green stimulates two of the three kinds of cones, L and M, almost equally."

So green light would be perceived as "brighter" by the human visual system.
 
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