NASA NTRS · 19630000002
Reference black body is compact, convenient to use
Abstract
To replace the classical hollow sphere, a compact reference black body has been constructed from stacked razor blades. Treated with a deposit of black oxide on the surfaces or notches between the upper edges of the blades, the device is useful over a wide range of incident angles.
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Dimeff, J., Neel, C. B.. 1964-04-01. Reference black body is compact, convenient to use. https://ntrs.nasa.gov/citations/19630000002
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