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Relevant bibliographies by topics / Coefficient of refraction

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Academic literature on the topic 'Coefficient of refraction'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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Journal articles on the topic "Coefficient of refraction"

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Ojeda Pardo, F. R., O. Belette Fuentes, V. E. Quiroz Cabascango, A. P. Mosquera Urbano, and E. Reyes Céspedes. "Determination of the local refraction coefficient in Cuban lateritic mineral deposits." Journal of Physics: Conference Series 2573, no. 1 (2023): 012009. http://dx.doi.org/10.1088/1742-6596/2573/1/012009.

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Abstract Much work has been done related to the characteristics of terrestrial refraction. However, very few have referred to the fluctuations of the refractive coefficient in the lower atmosphere in Cuban lateritic deposits. The objective of this research is to determine a local refraction coefficient in different climatic conditions and time of day, to increase the precision of the mineral volume calculation and to know its behavior and to analyze the influence of local refraction coefficient variations on the trigonometric leveling. The method of reciprocal simultaneous measurements of the

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RAMM, A. G. "A METHOD FOR CREATING MATERIALS WITH A DESIRED REFRACTION COEFFICIENT." International Journal of Modern Physics B 24, no. 27 (2010): 5261–68. http://dx.doi.org/10.1142/s0217979210056074.

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It is proposed to create materials with a desired refraction coefficient in a bounded domain D ⊂ ℝ3 by embedding many small balls with constant refraction coefficients into a given material. The number of small balls per unit volume around every point x ∈ D, i.e., their density distribution, is calculated, as well as the constant refraction coefficients in these balls. Embedding into D small balls with these refraction coefficients according to the calculated density distribution creates in D a material with a desired refraction coefficient.

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Dementiev, D. V. "Analysis of methods for determining the refraction coefficient in the atmospheric surface layer." Geodesy and Cartography 947, no. 5 (2019): 2–11. http://dx.doi.org/10.22389/0016-7126-2019-947-5-2-11.

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In the instructions for modern geodetic instruments, it is recommended to introduce an amendment for the refraction, taking into account the “standard” refraction coefficient k = 0,13÷0,2. In fact, in the surface layer of the atmosphere, the refractive index can range from –6 to 6. Various classical methods of determining refraction are analyzed. Conclusions based on experimental work made by various researchers are presented. Using the results of numerous studies of various methods for determining vertical refraction, it can be concluded that all classical (static) methods do not provide a hi

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Derdar, Mawaheb M., Asia A. Almeshergi, Najia E. Elgandouri, and Mohamed M. Amer. "New Correlation for Second Virial Coefficients by Using Refractive Index." International Science and Technology Journal 35, no. 1 (2024): 1–14. http://dx.doi.org/10.62341/mana1035.

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The development of a virial equation of state requires understanding numerous interaction virial coefficients. Given the relationship between these coefficients and the intermolecular potential, the corresponding states principle (CSP) can also be applied to extend its use to virial coefficients. In this study, the second virial coefficient has been developed using molar refraction. Molar refraction (R) is directly related to a substance's polarizability, which influences how molecules interact with each other. The more polarizable a molecule is, the stronger the attractive forces between them

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Ci, Long Sheng, and Gui Lan Yu. "Propagation of SH Waves through an Interface between a Phononic Crystal and a Uniform Solid." Materials Science Forum 675-677 (February 2011): 1061–64. http://dx.doi.org/10.4028/www.scientific.net/msf.675-677.1061.

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The reflection and refraction of harmonic SH waves at the interface between a homogeneous solid and a one-dimensional phononic crystal is studied. The effects of wave frequencies on the refraction coefficients are investigated. The results show that for lower frequencies, most part of the energy is reflected into the homogeneous solid and that the frequency has little effects on the energy distribution at the interface. While for higher frequencies, SH waves cannot propagate in some directions because of the existence of the directional band gaps, which results in the discontinuity in the refr

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Bezdetko, P., and R. Parkhomets. "STUDY OF PERIPHERAL REFRACTION IN CHILDREN WITH MYOPIA WITH ORTHOKERATOLOGY LENSES OF COMBINED DESIGN." East European Scientific Journal 2, no. 4(68) (2021): 38–46. http://dx.doi.org/10.31618/essa.2782-1994.2021.2.68.19.

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Progressive myopia is a leading problem in modern optometry and ophthalmology in general. In recent years, refractive therapy with orthokeratology lenses has gained popularity among methods to control myopia progression. The aim: To study peripheral refraction in children with myopia with the use of orthokeratology lenses (OKL) of combined design. Methods. We followed up 60 children (117 eyes) diagnosed with uncomplicated mild to moderate myopia. All children underwent a complete ophthalmological examination as well as corneal keratotopography and peripheral refraction determination. Statistic

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Bryn, Mikhail Y., Yulia V. Lobanova, and Dmitry A. Afonin. "DETERMINING AND CONSIDERING A REFRACTIVE INDEX ON CONSTRUCTION SITE." Vestnik SSUGT (Siberian State University of Geosystems and Technologies) 27, no. 1 (2022): 6–14. http://dx.doi.org/10.33764/2411-1759-2022-27-1-6-14.

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Taking into account the refraction in modern total station is performed by inputting the refrac-tion coefficient into the memory of the device. The article develops a formula to determine the refrac-tion coefficient based on geodetic surveys (zenith distances, horizontal positions, elevations) and pro-vides field survey results. The article proposes the method for creation of the vertical basis (a geodetic structure consisting of the points fixed on a vertical plane on one vertical line and ground points with highly accurate differences in elevations determined between them).The article provid

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Carracedo, Gonzalo, Carlos Carpena-Torres, Cristina Pastrana, Ana Privado-Aroco, María Serramito, and Laura Batres. "Repeatability of Aberrometry-Based Automated Subjective Refraction in Healthy and Keratoconus Subjects." Journal of Ophthalmology 2020 (October 29, 2020): 1–7. http://dx.doi.org/10.1155/2020/4831298.

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Purpose. To compare the intersession repeatability of the Eye Refract, a new instrument to perform aberrometry-based automated subjective refraction, on healthy and keratoconus subjects. Materials and Methods. A cross-sectional and randomized study was performed. A total of 64 participants were evaluated in the study, selecting one eye per participant randomly. The sample was divided into two different groups: 33 healthy subjects (38.85 ± 13.21 years) and 31 with keratoconus (37.29 ± 11.37 years). Three refractions per participant with the Eye Refract were performed on three different days, wi

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Baselga, Sergio, Luis García-Asenjo, and Pascual Garrigues. "Practical Formulas for the Refraction Coefficient." Journal of Surveying Engineering 140, no. 2 (2014): 06014001. http://dx.doi.org/10.1061/(asce)su.1943-5428.0000124.

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Palmer, Derecke. "Resolving refractor ambiguities with amplitudes." GEOPHYSICS 66, no. 5 (2001): 1590–93. http://dx.doi.org/10.1190/1.1487104.

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Amplitudes are used to constrain refraction models. This study demonstrates that the refraction time section generated through the convolution of forward and reverse refraction traces together with a static shift facilitates the convenient recognition of amplitude variations related to changes in refractor wavespeed. For large contrasts in wavespeeds between the upper layer and the refractor, the head coefficient is approximately proportional to the ratio of the specific acoustic impedances. Since the convolution operation effectively multiplies the amplitudes of the forward and reverse arriva

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Dissertations / Theses on the topic "Coefficient of refraction"

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Wheatcroft, Justin C. "Terahertz time domain spectroscopy and Fresnel coefficient based predictive model." Wright State University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=wright1347483587.

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Салогуб, Анна Олександрівна, Анна Александровна Салогуб, Anna Oleksandrivna Salohub та ін. "Влив температури підкладки на оптичні властивості плівок Zn2SnO4". Thesis, Інститут фізики напівпровідників ім. В.Є. Лашкарьова, 2017. http://essuir.sumdu.edu.ua/handle/123456789/65501.

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Використання плівок ZTO як провідного фронтального контакту до тонкоплівкових сонячних елементів на основі гетеропереходу CdTe/CdS дозволило підвищити ефективність перетворення енергії з 13,5% (контакт з SnO2) до 20,4%. На цей час всі відомі перетворювачі з рекордними параметрами на основі цього гетеропереходу обов’язково містять шар ZTO.

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Dvořáková, Hana. "Vliv prosklení na vnitřní mikroklima objektů." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2013. http://www.nusl.cz/ntk/nusl-225937.

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This master thesis deals with the influence of glazing on the microclimate inside buildings. In particular, I focused on the shading coefficient and the various factors that affect it. The thesis also concentrates on the origin and composition of the solar radiation, the formation of thermal stress and refraction. In the next part of the thesis, I focused on designing two variants of shielding factor and its impact on the thermal load of gym, sports hall and the related necessary changes. The last part of the thesis deals with experimental measurements of incident solar radiation passing throu

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Booso, Benjamin David. "The Growth of Columnar Thin Films and Their Characterization Within the Visible and Near Infrared Spectral Bands." University of Dayton / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1272587327.

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Souza, Rogerio Fernandes de. "Caracterização das propriedades ópticas não lineares de vidros teluretos, líquidos orgânicos e colóides de nanopartículas de ouro." Universidade Federal de Alagoas, 2008. http://repositorio.ufal.br/handle/riufal/1013.

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In this thesis, we investigate the nonlinear optical properties of four different physical systems: tellurite glasses, castor oil, ionic liquids and colloids of gold nanoparticles. Using Zscan and I-scan techniques, it was possible to determine the values of the electronic (n2 e) and thermal (n2 t) contributions of nonlinear refractive index of these systems as well as evaluating their respective thermo-optical coefficients (dn/dT). We use the I-scan technique to characterize five tellurite glass samples with different compositions. In this experiment we employ a Ti:sapphire laser operating in

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Liu, Tao. "Determination of three dimensional refractive indices and absorption coefficients of anisotropic polymer films with prism wave-guide coupler." Thesis, Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/8601.

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Annequin, Christel. "Étude et modélisation de l'échange ionique Ag+/Na+ dans des verres à base d'oxydes." Grenoble INPG, 1996. http://www.theses.fr/1996INPG0001.

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Ce travail est consacre a l'etude et a la modelisation de l'echange ionique ag#+/na#+ dans des verres a base d'oxydes. Il s'inscrit dans un cadre plus large visant a une meilleure comprehension des mecanismes presidant a la fabrication des guides d'onde. Nous avons synthetise et caracterise des borates et des silicates de sodium et d'argent. L'etude de leurs proprietes electriques a mis en evidence un phenomene se traduisant par des variations non lineaires de la conductivite electrique avec le taux de substitution du sodium par l'argent dans ces materiaux, et connu sous l'appellation effet de

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Watanabe, Naoki. "Fundamental Study on Wide-Bandgap-Semiconductor MEMS and Photodetectors for Integrated Smart Sensors." 京都大学 (Kyoto University), 2013. http://hdl.handle.net/2433/174944.

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Hissen, Huzifa Zain Alabdeen Abdarahman. "Spectral characterization of materials using terahertz time domain spectroscopy (THz-TDS)." Thesis, Stellenbosch : Stellenbosch University, 2014. http://hdl.handle.net/10019.1/96030.

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Thesis (MSc)--Stellenbosch University, 2014.<br>ENGLISH ABSTRACT: Terahertz (THz) radiation is often used in many promising applications such as information and communication technology and airport security. Optimized and adapted terahertz fields hold huge promise for leading this technology further. This study is focused on terahertz time domain spectroscopy (THz-TDS). In THz-TDS the electric field is measured, therefore both amplitude and phase information of the THz pulse can be obtained. We used the pump-probe technique in order to measure a THz pulse from the photoconductive antenna.

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Liu, Yajing. "Measurement of tissue optical properties during mechanical compression using swept source optical coherence tomography." Thesis, Virginia Tech, 2009. http://hdl.handle.net/10919/32395.

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Laser-based photo-thermal therapies can provide minimally-invasive treatment of cancers. Their effectiveness is limited by light penetration depth in tissue due to its highly scattering properties. The highly disordered refractive index distribution in tissue leads to multiple-scattering of incident light. It has been hypothesized that mechanical compression has a great potential to enhance the capabilities of laser therapy by inducing localized water transport, decreasing the refractive index mismatch, and decreasing the scattering coefficient of tissue. To better understand this process, we

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Books on the topic "Coefficient of refraction"

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Ramm, Alexander G. Creating Materials with a Desired Refraction Coefficient. Morgan & Claypool Publishers, 2017.

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Ramm, Alexander G. Creating Materials with a Desired Refraction Coefficient. Morgan & Claypool Publishers, 2017.

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Ramm, Alexander G. Creating Materials with a Desired Refraction Coefficient. Morgan & Claypool Publishers, 2017.

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Wave Scattering Small Bodies Creating Hb : Wave Scattering by Small Bodies: Creating Materials with a Desired Refraction Coefficient and Other. World Scientific Publishing Co Pte Ltd, 2023.

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Book chapters on the topic "Coefficient of refraction"

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Weik, Martin H. "refraction coefficient." In Computer Science and Communications Dictionary. Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_15863.

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Ramm, Alexander G. "Many-Body Wave Scattering Problems for Small Scatterers and Creating Materials with a Desired Refraction Coefficient." In Mathematical Analysis and Applications. John Wiley & Sons, Inc, 2018. http://dx.doi.org/10.1002/9781119414421.ch3.

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Lobanowa, Yulia, Mikhail Bryn, and Evgeniy Svintsov. "Determining the Refraction Coefficient Based on the Differences of the Measured and Known Zenith Distances in Short-Distance Trigonometric Leveling." In Lecture Notes in Civil Engineering. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-0454-9_22.

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Gooch, Jan W. "Temperature Coefficient of Refractive Index." In Encyclopedic Dictionary of Polymers. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_11605.

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Fernandes da Silva, E. C. "InAs: extinction coefficient, refractive index." In New Data and Updates for III-V, II-VI and I-VII Compounds. Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-540-92140-0_165.

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Fernandes da Silva, E. C. "InSb: extinction coefficient, refractive index." In New Data and Updates for III-V, II-VI and I-VII Compounds. Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-540-92140-0_321.

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Rössler, U. "Pb1-xEuxTe: refractive index, absorption coefficient." In New Data and Updates for several Semiconductors with Chalcopyrite Structure, for several II-VI Compounds and diluted magnetic IV-VI Compounds. Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-28531-8_41.

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Wei, Jingsong. "Characterization Methods for Nonlinear Absorption and Refraction Coefficients." In Springer Series in Optical Sciences. Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-662-44488-7_3.

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Fernandes da Silva, E. C. "Al x Ga1–x As: refractive index, absorption coefficient." In New Data and Updates for I-VII, III-V, III-VI and IV-VI Compounds. Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-48529-2_78.

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Galiatsatos, Vassilios. "Refractive Index, Stress-Optical Coefficient, and Optical Configuration Parameter of Polymers." In Physical Properties of Polymers Handbook. Springer New York, 2007. http://dx.doi.org/10.1007/978-0-387-69002-5_50.

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Conference papers on the topic "Coefficient of refraction"

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Esquivel-Hernández, Jonathan, Rodolfo Martínez-Manuel, Luis M. Valentín-Coronado, Daniel Maldonado-Hurtado, David Barrera, and Salvador Sales. "Estimation of Thermo-Optical Coefficient with Hilbert Transform in Multiparametric Fiber Refractometer." In Latin America Optics and Photonics Conference. Optica Publishing Group, 2024. https://doi.org/10.1364/laop.2024.w2a.6.

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This study demonstrates the use of the Hilbert transform in fiber refractometers to estimate the thermo-optical coefficient from temperature and refractive index changes, achieving a novel approach with low standard deviation for optical applications.

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Idres, Samer, and Hossein Hashemi. "Measurement of the Temperature Coefficient of the Refractive Index for Silicon Nitride Thin Film in the Visible Range." In Frontiers in Optics. Optica Publishing Group, 2024. https://doi.org/10.1364/fio.2024.jd4a.95.

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We experimentally measure the temperature dependence of the refractive index for 400 nm thick LP-CVD Silicon Nitride layer in the visible range, finding a refractive index of ~2.03 and a temperature coefficient of ~-1.3×10⁻4.

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Singha, Tara, Manoranjan Bera, N. D. Pradeep Singh, and Prasanta K. Datta. "Dispersion of Nonlinear Refraction Coefficient in Carbon Dots." In Frontiers in Optics. Optica Publishing Group, 2022. http://dx.doi.org/10.1364/fio.2022.jtu5a.13.

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We studied the dispersion of nonlinear refraction coefficient (n2) of carbon dots by the Z-scan technique at different photon energies (2.38-2.48 eV). It shows positive n2 at 2.38 eV and negative n2 at other excitations.

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Andriychuk, Mykhaylo. "Modeling the non-homogeneous media with specific refraction coefficient." In 2017 IEEE First Ukraine Conference on Electrical and Computer Engineering (UKRCON). IEEE, 2017. http://dx.doi.org/10.1109/ukrcon.2017.8100474.

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Ramm, A. G., Jane W. Z. Lu, Andrew Y. T. Leung, Vai Pan Iu, and Kai Meng Mok. "How To Prepare Materials With a Desired Refraction Coefficient?" In PROCEEDINGS OF THE 2ND INTERNATIONAL SYMPOSIUM ON COMPUTATIONAL MECHANICS AND THE 12TH INTERNATIONAL CONFERENCE ON THE ENHANCEMENT AND PROMOTION OF COMPUTATIONAL METHODS IN ENGINEERING AND SCIENCE. AIP, 2010. http://dx.doi.org/10.1063/1.3452159.

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Ramm, A. G. "Preparing Materials with a Desired Refraction Coefficient and Applications." In Topics on Chaotic Systems - Selected Papers from CHAOS 2008 International Conference. WORLD SCIENTIFIC, 2009. http://dx.doi.org/10.1142/9789814271349_0030.

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Ramm, A. G. "Many-body wave scattering and creating materials with a desired refraction coefficient." In 2009 International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory (DIPED). IEEE, 2009. http://dx.doi.org/10.1109/diped.2009.5307280.

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Andriychuk, Mykhaylo. "Creating specific refraction coefficient of medium using a set of embedded thin wires." In 2015 13th International Conference The Experience of Designing and Application of CAD Systems in Microelectronics (CADSM). IEEE, 2015. http://dx.doi.org/10.1109/cadsm.2015.7230788.

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Guha, Shekhar, Eric W. Van Stryland, and M. J. Soileau. "Picosecond study of charge-carrier-induced nonlinear refraction in intermediate band-gap semiconductors." In OSA Annual Meeting. Optica Publishing Group, 1985. http://dx.doi.org/10.1364/oam.1985.wq1.

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Free carriers generated by absorption of light in semiconductors change the complex dielectric constant and give rise to irradiance-dependent refraction and absorption. In addition to the refractive-index change arising from the low frequency dipole moment induced by the charge carriers (the Drude contribution), there can be contributions to the refractive-index change arising from the band-gap resonant saturation of the conduction band states. The amount of this additional contribution has been theoretically predicted.1 Verification of this prediction for two-photon absorption-generated charg

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Zatserklyanaya, A. V., V. I. Lutsenko, I. V. Lutsenko, and S. I. Khomenko. "Seasonal variation of high-altitude profiles of the troposphere refraction coefficient over the land." In 2010 20th International Crimean Conference "Microwave & Telecommunication Technology" (CriMiCo 2010). IEEE, 2010. http://dx.doi.org/10.1109/crmico.2010.5632879.

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Reports on the topic "Coefficient of refraction"

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Kattawar, George W. Use of Atmospheric Refraction to Determine Air Mass and Extinction Coefficients as Well as Temperature and Humidity Profiles in the Marine Boundary Layer. Defense Technical Information Center, 1997. http://dx.doi.org/10.21236/ada627978.

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