Accession Number:

AD0691262

Title:

BI-DIRECTIONAL SCATTERING CHARACTERISTICS OF HEALTHY, GREEN SOYBEAN AND CORN LEAVES IN VIVO,

Descriptive Note:

Corporate Author:

PURDUE UNIV LAFAYETTE IND SCHOOL OF ELECTRICAL ENGINEERING

Report Date:

1969-04-01

Pagination or Media Count:

267.0

Abstract:

Measurements were made to determine the bi-directional scattering characteristics of living, green soybean and corn leaves in the range from 375 mm to 1 millimicron m. A goniometer was constructed to study bi-directional scattering on the leaves of potted soybean and corn plants. The leaf sample was held in a plane and light of a selected wavelength was incident at a given angle. A detector was then moved around the sample at a constant radius resulting in a polar plot of scattered radiant power as a function of observation angle for a given angle of incidence and wavelength. The results show strong specular components of reflection in addition to diffuse components for both soybean and corn leaves. The results describe a simple four layer bi-directional scattering model for a soybean leaf. This model has a rough surface with isotropy relative to the midvein. The results for a corn leaf describe a simple three layer bi-directional scattering model. This model has a rough surface with a definite anisotropy relative to the midvein. The results are two-dimensional polar graphs. Measurements were carried out which indicate the extension of these results to three dimensions. Author

Subject Categories:

  • Agronomy, Horticulture and Aquiculture
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE