Results 1 to 10 of about 18,556 (174)
Ukraine and singular optics [PDF]
Nanophotonics, 2023 The mostly theoretical viewpoint, in which light is understood in terms of its singularities – caustics, phase vortices and lines of circular and linear polarisation – was developed in Bristol in the 1970s and 1980s.
Berry Michael
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Gravitational caustics in an atom laser [PDF]
Nature Communications, 2021 Previously, the study of caustics has mostly focused on experiments with light. Here, the authors demonstrate gravitational caustics and investigate catastrophe atom optics using the matter waves of an atom laser generated from a Bose-Einstein condensate.
M. E. Mossman +3 more
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Monthly Notices of the Royal Astronomical Society, 2008 Caustics are a generic feature of the nonlinear growth of structure in the dark matter distribution. If the dark matter were absolutely cold, its mass density would diverge at caustics, and the integrated annihilation probability would also diverge for ...
Alard +23 more
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Motion After‐Effects Induced by Dynamic Illumination in Crab Vision [PDF]
Ecology and EvolutionMotion detection is an elementary aspect of most animal visual systems. However, many environments are prone to background motion, which might disrupt the ability of visual systems to detect relevant motion cues.
Christian Drerup +2 more
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Arbitrary engineering of spatial caustics with 3D-printed metasurfaces [PDF]
Nature CommunicationsCaustics occur in diverse physical systems, spanning the nano-scale in electron microscopy to astronomical-scale in gravitational lensing. As envelopes of rays, optical caustics result in sharp edges or extended networks.
Xiaoyan Zhou +8 more
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Predicting Factors of Clinical Outcomes in Patients Hospitalized after Esophageal Foreign Body or Caustic Injuries: The Experience of a Tertiary Center [PDF]
Diagnostics, 2023 Ingestion of foreign bodies (IFB) and ingestion of caustic agents are frequent non-hemorrhagic causes of endoscopic urgencies, with the potential for severe complications.
Tiago Ribeiro +4 more
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International Journal of Mathematics and Mathematical Sciences, 1986 The Lagrange manifold (WKB) formalism enables the determination of the asymptotic series solution of linear differential equations modelling wave propagation in spatially inhomogeneous media at caustic (turning) points.
Arthur D. Gorman
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Successful treatment of corrosive esophageal atresia in a child using combined antegrade-retrograde dilation: a case report [PDF]
Frontiers in PediatricsCorrosive esophageal injury in children may rarely lead to complete atresia. No standardized treatment exists for pediatric corrosive esophageal atresia. This case demonstrates a novel minimally invasive approach.
Hao Wu +9 more
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Corrosive Esophagitis and Gastritis Induced by Glutaraldehyde Ingestion [PDF]
The Korean Journal of Helicobacter and Upper Gastrointestinal Research, 2020 Corrosive esophagitis and gastritis are characterized by caustic damage due to ingestion of chemical agents. Caustic agents cause tissue destruction through liquefaction or coagulation reactions.
Donghwan Jun +6 more
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UNDERWATER PHOTOGRAMMETRY IN VERY SHALLOW WATERS: MAIN CHALLENGES AND CAUSTICS EFFECT REMOVAL [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018 In this paper, main challenges of underwater photogrammetry in shallow waters are described and analysed. The very short camera to object distance in such cases, as well as buoyancy issues, wave effects and turbidity of the waters are challenges to be ...
P. Agrafiotis +6 more
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