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Dissertations / Theses on the topic 'Blackbody radiation'

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1

Rovner, Barry Arthur 1957. "AN IMAGE PROCESSOR BASED SYSTEM FOR BLACKBODY CALIBRATION." Thesis, The University of Arizona, 1987. http://hdl.handle.net/10150/276398.

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2

Rahmati, Shohreh. "Vacuum polarization and Hawking radiation." Thesis, Lethbridge, Alta. : University of Lethbridge, Dept. of Physics and Astronomy, c2012, 2012. http://hdl.handle.net/10133/3302.

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Quantum gravity is one of the interesting fields in contemporary physics which is still in progress. The purpose of quantum gravity is to present a quantum description for spacetime at 10 33cm or find the `quanta' of gravitational interaction.. At present, the most viable theory to describe gravitational interaction is general relativity which is a classical theory. Semi-classical quantum gravity or quantum field theory in curved spacetime is an approximation to a full quantum theory of gravity. This approximation considers gravity as a classical field and matter fields are quantized. One
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3

Hu, Fangjing. "'THz Torch' technology : secure thermal infrared wireless communications using engineered blackbody radiation." Thesis, Imperial College London, 2014. http://hdl.handle.net/10044/1/29129.

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The thermal (emitted) infrared frequency bands, from 20 to 40 THz and 60 to 100 THz, are best known for applications in thermography. This underused and unregulated part of the spectral range offers opportunities for the development of secure communications. The 'THz Torch' concept, operating between the THz and mid-infrared ranges, was recently introduced. This technology fundamentally exploits engineered blackbody radiation, by partitioning thermally-generated spectral power into pre-defined frequency channels; the energy in each channel is then independently pulsed modulated to create a rob
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4

Rossow, Rodney Allen. "Blackbody temperature calculations from visible and newa-IR spectra for gas-fired furnaces." Diss., Columbia, Mo. : University of Missouri-Columbia, 2006. http://hdl.handle.net/10355/4124.

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Thesis (Ph. D.)--University of Missouri-Columbia, 2006.<br>The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file viewed on (May 15, 2007) Vita. Includes bibliographical references.
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5

Al-Masoudi, Ali Khalas Anfoos [Verfasser]. "A strontium lattice clock with reduced blackbody radiation shift / Ali Khalas Anfoos Al-Masoudi." Hannover : Technische Informationsbibliothek (TIB), 2016. http://d-nb.info/1122131305/34.

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6

Al-Masoudi, Ali [Verfasser]. "A strontium lattice clock with reduced blackbody radiation shift / Ali Khalas Anfoos Al-Masoudi." Hannover : Technische Informationsbibliothek (TIB), 2016. http://d-nb.info/1122131305/34.

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7

Barker, David G. "Reconstruction of the temperature profile along a blackbody optical fiber thermometer /." Diss., CLICK HERE for online access, 2003. http://contentdm.lib.byu.edu/ETD/image/etd191.pdf.

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8

Jordan, Jorge J. "UNDERSTANDING THE NON-CONTACT TEMPERATURE MEASUREMENT TECHNOLOGY." International Foundation for Telemetering, 2005. http://hdl.handle.net/10150/605042.

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ITC/USA 2005 Conference Proceedings / The Forty-First Annual International Telemetering Conference and Technical Exhibition / October 24-27, 2005 / Riviera Hotel & Convention Center, Las Vegas, Nevada<br>The ability to accurately measure the temperature of different materials has always been a challenge for the Instrumentation Engineer. The use the classic contact type temperature detector such as thermocouples or RTD’s (Resistance Temperature Detectors) has not always shown to be the best approach to obtain the expected measurement. When not used carefully in closed environments, thermocouple
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9

Truxon, James M. "Semi-Empirical Lifetimes for High-Energy Rydberg States of ¹³³Cs Neutral Cesium in a Blackbody Radiation Field." University of Toledo / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1356809390.

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10

Bickel, Robert. "An Experimental Method of Measuring Spectral, Directional Emissivity of Various Materials and Joule Heating." UKnowledge, 2015. http://uknowledge.uky.edu/me_etds/60.

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Emissivity is an important parameter in calculating radiative cooling of a surface. In experiments at the NASA Ames hypervelocity ballistic range, one of the main errors indicated in temperature measurements is the uncertainty of emissivity for the materials under investigation. This thesis offers a method for measuring emissivity of materials at elevated temperatures at the University of Kentucky. A test specimen which consists of different sample materials under investigation and a blackbody cavity was heated in a furnace to an isothermal condition at known temperature. The emitted thermal r
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11

Alhanash, Mirna. "The Thermodynamic Interaction of Light with Matter." Thesis, Uppsala universitet, Tillämpad kärnfysik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-425132.

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Light is electromagnetic radiation that could be shown in a spectrum with a wide range of wavelengths. Blackbody radiation is a type of thermal radiation and is an important topic to explore due to it being an ideal body that materials’ properties are often described in comparison to it. Therefore, it helps in understanding how materials behave on the quantum level. One must understand its interaction with light spectrum and how electron excitation happens. Thus, concepts such as Planck’s law, energy quantization and band theory will be discussed to try to grasp of how light interacts with mat
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12

Lahbabi, Khalid. "Etude et realisation d'un dispositif de mesure, dans le spectre infrarouge, de l'emissivite des materiaux opaques." Paris 6, 1986. http://www.theses.fr/1986PA066115.

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Mesure directe de l'emissivite spectrale directionnelle d'echantillons dans le domaine spectral 3 microns a 11 microns en fonction de l'angle d'observation, de la longueur d'onde du rayonnement et de la temperature. Possibilite de mesure indirecte par l'intermediaire de la brdf
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13

Dobesch, Aleš. "IR teploměr s automatickou korekcí emisivity." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2013. http://www.nusl.cz/ntk/nusl-220257.

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Diploma thesis deals with basic physical quantities and laws relating to non-contact temperature measurement and emissivity determination of solids. It describes the design and implementation of the IR (Infra-Red) thermometer often missed with automatic emissivity correction. The first chapter explains the concept of temperature and basic principles of temperature measuring . The second chapter focuses on the history and theory of non-contact temperature measurement. Gradually are explained the concepts related to non-contact temperature measurement and the problem of determining the emissivit
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14

Graciani, Guillaume. "Three-dimensional stochastic interferometry : theory and applications to high-sensitivity optical metrology and light scattering amplification Random dynamic interferometer:cavity amplified speckle spectroscopy using a highly symmetric coherent fieldcreated inside a closed Lambertian optical cavity 3D stochastic interferometry detects picometer dynamics of an optical volume Cavity Amplified Speckle Spectroscopy expands lightscattering methods to transparent or miniature samples Super-resolution provided by the arbitrarily strongsuperlinearity of the blackbody radiation." Thesis, Institut polytechnique de Paris, 2020. http://www.theses.fr/2020IPPAX058.

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La puissance de la métrologie optique nécessite généralement des géométries simples avec un alignement précis et une phase optique bien contrôlée. Dans cette thèse, nous développons plutôt la notion d'interférométrie du chaos, en utilisant un champ optique ayant un désordre géométrique maximal et une phase aléatoire. Nous montrons que la stochasticité conduit à une très grande sensibilité interférométrique et ouvre la possibilité d'un large éventail de nouvelles mesures optiques et d'une nouvelle méthode que nous appelons la Cavity Amplified Speckle Spectroscopy (Spectroscopie de Speckle Ampli
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15

Pierre, Thomas. "Mesure de la température à l'échelle microscopique par voie optique dans la gamme ultraviolet-visible." Thesis, Vandoeuvre-les-Nancy, INPL, 2007. http://www.theses.fr/2007INPL096N/document.

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Cette étude porte sur la mesure de la température à l’échelle microscopique par voie optique dans la gamme UV-visible par comptage de photons à l’aide d’un PMT refroidi. À partir des avantages et des inconvénients de chaque technique existante, la première partie permet de comprendre les orientations de nos travaux. Le Second Chapitre montre et insiste sur l’intérêt de travailler aux courtes longueurs d’onde (limite de diffraction, précision sur la mesure...), d’utiliser la méthode multi-spectrale pour s’affranchir de paramètres inconnus (e.g. l’émissivité) en choisissant judicieusement les lo
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