Apparent magnitude of spheres illuminated by the sun as a function of the diameter of the spheres. It is assumed that the distance from the observer to the spheres is 1 meter (Curve A) and 10 meters (Curve B). See equation (1) p. 286.
NCAS EDITORS' NOTE: The photocopies of this figure and Figure 5 would not scan legibly, so it was necessary to regenerate the figures from scratch.
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