A simple method is demonstrated to determine the diameters of
dielectric spheres from 0.2 to 1.0 mm by observing the scattering of
visible light. Theoretical calculations show that there is an
approximately linear relationship between the size of the scattering
sphere and the number of maxima and minima in the scattered field as a
function of angle when the radius in the 200–1000-wavelength
© 1998 Optical Society of America
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