Why do some substances absorb EMR more than others?

  • Context: Undergrad 
  • Thread starter Thread starter LogicalAcid
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SUMMARY

Substances absorb electromagnetic radiation (EMR) at varying levels due to their intrinsic material properties, surface finish, and geometry. Materials that exhibit electromagnetic properties closer to that of black bodies demonstrate higher absorption rates. Additionally, the surface finish can significantly influence the reflection and absorption characteristics of a substance. The geometry of the material also plays a critical role in determining how EMR interacts with it.

PREREQUISITES
  • Understanding of electromagnetic properties of materials
  • Knowledge of surface finish techniques and their effects
  • Familiarity with geometric optics
  • Basic principles of thermodynamics related to black body radiation
NEXT STEPS
  • Research the electromagnetic properties of different materials
  • Study the impact of surface finish on EMR absorption
  • Explore geometric optics and its relevance to EMR interaction
  • Investigate black body radiation and its applications in material science
USEFUL FOR

Material scientists, physicists, engineers, and anyone involved in the study of electromagnetic radiation and its interaction with various substances.

LogicalAcid
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Some are closer to black bodies than others, some reflect more than others, why is this?
 
Physics news on Phys.org
There's a ton of reasons why, but it comes down mainly to:

Material (specifically EM properties, more specifically EM properties relative to the medium its in)
Surface Finish
Geometry
 

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