FIGURE 2.4.A generalized pattern of reflection, absorption, and transmission of light through a green leaf which reflects part of the incident green wavelengths and absorbs all the blue and red energy for photosynthesis (Sabins, 1997). Chlorophyll absorption is maximum in the blue (0.45 |j.m) and in the red (0.65 ^m) regions (Table 2.7). The longer wavelengths of photographic IR energy penetrate into the spongy parenchyma, where the energy is strongly scattered and reflected by the boundaries between the cell walls and air spaces. The high
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