Is there such a thing as lumens/m^3?Would you have to be measuring

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SUMMARY

The discussion centers on the concept of lumens per cubic meter (lumens/m³) and its relevance in measuring light. It concludes that lumens/m² is a more meaningful measure of perceived brightness, as lumens represent light that reaches the human eye. The conversation highlights that while lumens/m³ is not a standard unit, it could be conceptually applied to scenarios involving light scattering in mediums like fog or fluid. The participants clarify that lumens/m² cannot be directly converted to a volumetric measure of electromagnetic energy.

PREREQUISITES
  • Understanding of photometry and the concept of lumens
  • Familiarity with the measurement of light intensity and brightness
  • Knowledge of light scattering phenomena in various media
  • Basic principles of electromagnetic energy and its measurement
NEXT STEPS
  • Research the principles of photometry and how lumens are measured
  • Explore the effects of light scattering in fog and other mediums
  • Investigate the relationship between lumens/m² and perceived brightness
  • Learn about electromagnetic energy measurement techniques
USEFUL FOR

Lighting designers, optical engineers, and anyone involved in the study or application of light measurement and photometry.

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Is there such a thing as lumens/m^3?
Would you have to be measuring incoming light/energy from every (infinite) direction at the same time?
Can it be estimated or got from lumens/m^2?
 
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Not really a meaningful unit. Light that moves through space without reaching a human eye has 0 lumens. Lumens/m^2 is a measure of perceived brightness.

The closest thing to making it meaningful would be to measure the light being scattered by a fog or volume of fluid. That could be described as lumens per unit volume.
 


Aha, thanks. I think I'm confusing lumens/m^2 as a measure of electromagnetic energy. Is there an equivalent to lumens/m^2 for em energy?
 

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