Geometrical Optics
Geometrical optics for scalar, electromagnetic and gravitational waves on curved spacetime
... This paper is organised as follows. In Sec. 2 we review the free field equations (2.1), and then the scalar (2.2.1), electromagnetic (2.2.2) and gravitational-wave (2.2.3) cases in more detail. In Sec. 3, we introduce ...
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Study of the emissivity of rough surfaces periodic using the method of coupled waves analysis (CWA) compared with method of geometrical optics approximation (GOA)
... the geometrical optics ap- proximation compared with a differential method which is established according to rigorous for- malisms based on the electromagnetic ...geometric optics method ...optic ...
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Quasi-Isotropic Approximation of Geometrical Optics Method with Applications to Dense Plasma Polarimetry
... Abstract—Basic equations of quasi-isotropic approximation (QIA) of geometrical optics method are presented, which describe electro- magnetic waves propagation in weakly inhomogeneous and weakly anisotropic ...
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Untitled
... using geometrical optics to calculate the field strength con- tribution of a reflected image to the observation points lying along a sector, it is necessary to ensure that the first Fresnel zone is totally ...
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Logarithmic stability of the refractive index for the acoustic equation from boundary measurements
... The paper deals with an inverse problem for the acoustic equation with fixed frequency. The object is to identify the associated refractive index from boundary measurements. We prove the logarithmic stability estimate. ...
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Reply to the ``Comment on `Fringe Waves in an Impedance Half-Plane'"
... 2) The objection of Hacivelioglu and co-authors to the phrase “exact geometrical optics (GO)” proves their real level of knowledge on the diffraction theory. The GO waves are exact, because they are ...
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A Uapo-Based Model for Propagation Prediction in Microcellular Environments
... the Geometrical Theory of Diffraction, the total field at a given observation point is calculated by summing the Geometrical Optics contributions and the field diffracted by the edges of each ...
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The Use of Magic in Optics in Higher Education
... of geometrical optics onto the forming of images (conver- gent and divergent simple lenses, mirrors, association of two simple lenses); this part of the work was relatively ...
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The enigma of imaging in the Maxwell fisheye medium
... in geometrical optics approx- imation, where neglecting the wave nature of light results in the absence of diffraction ...in geometrical optics would also be diffraction-free in wave ...in ...
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Roadmap on Transformation Optics
... Transformation optics has been proven to be a very versatile and powerful ...surface, geometrical optics provides a similar link between geometry and materials ...transformation optics, the ...
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Improvement of Iterative Physical Optics Using the Physical Optics Shadow Radiation
... To overcome this issue, asymptotic methods have been developed and can be used in high- frequency domain for arbitrarily shaped targets with a reduced complexity. These methods are based on Geometrical ...
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Design and Analysis of Parabolic Reflector with High Gain Pencil Beam and Low side lobes by Varying feed
... In geometrical optics, if a beam of parallel rays is incident upon a reflector whose geometrical shape is a parabola, the radiation will converge at spot, which is known as a focal ...
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Developing an Imaging System to Monitor Atom Traps for Neutral Atom Quantum Computing
... Figure 5: The photodiode and high-speed camera mounted in position, aimed at the center of our MOT. I first utilized geometrical optics to calculate the expected ideal distance between [r] ...
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Comprehensive Modeling of Multimode Fiber Sensors for Refractive Index Measurement and Experimental Validation
... wave optics to obtain the EWA equation, Gaussian beam optics to describe the injected power distribution, and ray optics to explain the principle of opti- cal mode losses in an MMF configured for ...
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Silicon nitride photonics for the near infrared
... Periklis Petropoulos Dr. Periklis Petropoulos graduated from the Department of Electrical Engineering and In- formation Technology, University of Patras, Greece in 1995. He received the MSc degree in Communications ...
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Theoretical atom optics : evanescent wave atom optics and Bose-Einstein condensation
... The invention of the laser also allowed experiments which went beyond the regime of the classical electromagnetic field - experiments which dealt d i rectly with the quantum state of the light field. Such experiments ...
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Visual acuity of fly photoreceptors in natural conditions dependence on UV sensitizing pigment and light controlling pupil
... The pupil is well able to achieve a high acuity by cutting out the higher order waveguide modes, but the case of the fly R1–R6 photoreceptors shows that acuity is not pushed to the lowest values achievable. Because ...
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A highly miniaturized satellite payload based on a spatial heterodyne spectrometer for atmospheric temperature measurements in the mesosphere and lower thermosphere
... the optics and the use of spherical lenses only, significant image distortions are ex- ...the geometrical point spread functions, which are expected to be much smaller than the required spatial resolution ...
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Approaching by DX- Schemes and Jets to Conformal Blocks in Commutative Moduli Schemes
... I am very grateful to the research group for the invitation to participate in the seminar that organized in Chalco, Mexico the Lead Guest Editor of the special issue in integral geometry methods on derived categories in ...
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Geometrical Based Technique For Reflection Based Image Forgery Detection In Digital Images
... Figure 4.1 shows the geometrical representation of the image and reflected image. In figure AB denote the original image; M is the plane mirror responsible for the reflection, and ED is the reflected image. Since ...
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