Results 251 to 260 of about 54,387 (315)

Optical centroid ellipses beyond polarization ellipses

Optics Letters
Polarization ellipses are well-known as the result of coherent superposition of photonic spin states. As orbital counterparts, in this Letter, we introduce centroid ellipses that are geometrically mapped from optical orbital angular momentum (OAM) superpositions on a modal Poincaré sphere (PS) by coaxial interference.
Jia Cheng   +6 more
openaire   +2 more sources

Minimum Covering Ellipses

SIAM Journal on Scientific and Statistical Computing, 1980
With the aid of a duality relation originally obtained in the theory of statistical experimental design, an exact terminating algorithm is developed for finding the ellipse of smallest area covering a given plane point set. Some applications and related problems are discussed.
Silverman, B. W., Titterington, D. M.
openaire   +1 more source

New Color-Matching Ellipses

Journal of the Optical Society of America, 1971
Three new sets of color-matching experiments have been made by three observers binocularly viewing a bipartite field (each half subtending 3°) of a three-primary colorimeter. Each set of color-matching data refers to 28 test colors scattered over the chromaticity gamut provided by the colorimeter.
Wyszecki, G. W., Fielder, G. H.
openaire   +3 more sources

The staggered ellipse

British Journal of Plastic Surgery, 2000
An incision is described in which the two ends of an elliptical excision are displaced. This can be used in two situations; in the reduction in length of one side of a digit and in the excision of two lesions close together.
openaire   +2 more sources

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