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Understanding colors in nature.

C F Bohren1

  • 1Department of Meteorology, Pennsylvania State University, University Park 16802.

Pigment Cell Research
|January 1, 1988
PubMed
Summary
This summary is machine-generated.

White light becomes colored light through absorption or scattering by matter. The observed color depends on the material

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Area of Science:

  • Optics and Photonics
  • Materials Science

Background:

  • White light interacts with matter via absorption and scattering to produce color.
  • Scattering encompasses phenomena like reflection, refraction, and diffraction.
  • Understanding color requires a hierarchy of theories, from simple optics to microscopic models.

Purpose of the Study:

  • To elucidate the fundamental mechanisms by which white light is transformed into colored light.
  • To explore the relationship between material properties, light interaction, and observed color.
  • To discuss the hierarchy of theoretical approaches for explaining color phenomena.

Main Methods:

  • Conceptual analysis of light-matter interactions.
  • Review of established optical theories (geometrical optics, more exact theories).

Related Experiment Videos

  • Examination of empirical observations and microscopic theories of absorption and scattering.

    • Main Results:

    • Absorption converts light to other energy forms; scattering redirects light.
    • Material disposition significantly influences scattering patterns and observed colors.
    • Particle size is critical for color generation in scattering phenomena (e.g., smoke).
    • Absorption mechanisms can be complex and not always readily attributable to specific molecular features (e.g., ice, beer).

    Conclusions:

    • Color arises from either absorption or scattering of white light by matter.
    • The observed color is contingent upon the specific interaction mechanism, material properties, and observation conditions.
    • A multi-tiered theoretical framework is necessary for a comprehensive understanding of color phenomena.