Red edge
Red edge
Region of change in vegetation reflectance.
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Purple Earth hypothesis
Astrobiological hypothesis regarding early photosynthetic organisms.
48%
Normalized difference vegetation index
Metric quantifying vegetation density.
24%
Photosynthetically active radiation
Range of light usable for photosynthesis.
11%
Enhanced vegetation index
Index for improving vegetation monitoring.
11%
Corner reflector
Retroreflector with three orthogonal, intersecting flat surfaces.
6.8%
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