Results 151 to 160 of about 771,659 (382)
Chinese Physics Letters, 2009 Due to the intrinsic properties of neutrinos, the gravitational lens effect for neutrino should be more colorful and meaningful than the normal lens effect of photon. Other than the oscillation experiments operated at terrestrial laboratory, in principle, we can propose a completely new astrophysical method to determine not only the nature of gravity ...
openaire +2 more sources
On the equations of spherical convex mirror and negative lenses [PDF]
, 1928 Josef Štěpánek
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Toughness of Confined Auxetic Foams
Advanced Engineering Materials, EarlyView.Auxetic (negative Poisson's ratio) materials offer benefits such as impact mitigation, thermal insulation, vibration damping, and reduced shear strain, although their fracture mechanics are largely unexplored. This study investigates damage initiation and propagation in confined re‐entrant auxetic foams from polyurethane via experimental ...
Adrianos E. F. Athanasiadis +3 more
wiley +1 more source
Delhi Journal of Ophthalmology, 2013 Contact lenses are classified on the basis of the bearing zone area as Corneal, Corneo-scleral and Scleral lenses. Scleral lenses are large in diameter (18 - 23mm) and have a bearing completely on sclera.
Nidhi Gupta, Minal Kaur, Abhilek
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Comparative Study of Experimental Methods for Measuring Thermal Properties of 100Cr6 Steel Powders
Advanced Engineering Materials, EarlyView.This study investigates the thermal properties of 100Cr6 steel in both bulk and powder forms. Measuring the very low thermal conductivity typically exhibited by powders poses significant challenges. To address this, two novel measurement techniques—temperature gradient and finite laser pulse response—are introduced and evaluated by comparison with the ...
Junsheng Zhuo +8 more
wiley +1 more source
Physical Optics Applied to Parallel-Plate Lens Antennas
IEEE Open Journal of Antennas and PropagationThe Physical Optics (PO) method is used to derive simplified expressions to compute the radiation electric fields of planar graded-index and geodesic lenses based on a parallel-plate waveguide (PPW) implementation.
Francisco Mesa +3 more
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Zoom systems with tuneable lenses and linear lens movements
Journal of the European Optical Society-Rapid Publications, 2019 Background Classical zoom lenses are based on movements of sub-modules along the optical axis. Generally, a constant image plane position requires at least one nonlinear sub-module movement.
Leonhard Lenk +2 more
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3D Printed Ultra‐Fast Plastic Scintillators Based on Perovskite‐Photocurable Polymer Composite
Advanced Functional Materials, Volume 35, Issue 12, March 18, 2025.The demand for radiation detection is increasing in a number of fields, including high‐energy physics, medical imaging, and homeland security. This study serves to demonstrate the potential for the fabrication of fast perovskite‐based scintillators with complex shapes via stereolithographic additive manufacturing, representing a new path toward the ...
Antonella Giuri +16 more
wiley +1 more source
CONGENITAL ABSENCE OF THE LENS, WITH SPECIAL REFERENCE TO AN APHAKIC HUMAN EMBYRO [PDF]
, 1921 Ida Mann
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