Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 1211 for “"wavelengths"”.
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Wavelengths
A novel excerpt exploring motherhood and the implications of its loss.
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Wavelengths
A novel excerpt exploring motherhood and the implications of its loss.
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Astronomical Interferometry at Submillimetre Wavelengths
… interferometer operating at submillimetre wavelengths. Included are my contributions to the technical design and construction of the instrument and to the subsequent debugging and calibration, and my analysis of the data that was obtained from a number of astronomical objects. I was …
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Localized wave solutions in optical fiber wavelengths
A novel bidirectional decomposition of exact solutions to the scalar wave equation has been shown to form a natural basis for synthesizing localized wave (LW) solutions that describe localized, slowly decaying transmission of energy in free space. In this work, we demonstrate the existence of LW …
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Adaptations of Terrestrial Isopods to Varying Wavelengths of Light
… were subjected to prolonged periods of varying wavelengths of light, and to measure this adaptability by locomotor activity. Procedure. Terrestrial isopods were randomly collected from their natural environments, placed in study chambers, and subjected to red, blue, green, white, and no light …
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MOVPE metamorphic lasers and nanostructures engineering at telecom wavelengths
In recent years, considerable attention has been drawn to the design of heterostructures on GaAs substrates emitting in the 1.3-µm spectral range for replacing InP injection lasers in medium range fiber-optic communication links. Scaling considerations apart, the enhanced electronic confinement in …
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A Fourier transform spectrometer for millimeter and submillimeter wavelengths
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Physics, 1980.
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Gravitational lens B0957+561 : a study at radio wavelengths
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1997.
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A Search for Astrophysical Radio Transients at Meter Wavelengths
Astrophysical phenomena such as exploding primordial black holes (PBHs), gamma-ray bursts (GRBs), compact object mergers, and supernovae, are expected to produce a single pulse of electromagnetic radiation detectable at the low-frequency end of the radio spectrum. Detection of any of these pulses …
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Delay improvements from multiple wavelengths in an optical folded bus
… is assumed to have a very limited number of wavelengths and therefore does not apply a typical wavelength division multiplexing. The analysis of the delay involves mostly queueing analysis, with extensive use of Laplace transforms and Z-transforms. The purpose of this comparison is to decide …
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Computational Modelling and Experimental Verifcation of Quasioptical Components at Millimetre Wavelengths
This thesis describes various analysis techniques used in the optical characterisation of millimetre wave radiation. The results presented relate to both computational simulation and experimental measurements carried out at NUI Maynooth. The majority of the analysis is centred around a frequency of …
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Modelling of Electromagnetic Scattering at Infrared Wavelengths by Pristine Ice Crystals
… Thesemethods are not efficient at infrared wavelengths due to size parameter, which typically can bein order of 100 or more that leads to intensive computation. In this work, a new approach basedon physical optics is presented in which the scattering by smooth prismatic dielectric ice …
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Power scaling and nonlinear conversion in fiber-based sources at novel wavelengths
… fiber sources is limited to specific wavelengths regions by typical used rare-earth dopants such as ytterbium (Yb) around 1 µm, erbium (Er) with emission around 1.55 µm, thulium (Tm) with a gain emission from 1.7 to 2.0 um, and holmium (Ho) with an emission from 2.05 to 2.1 µm. …
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Effect of Combining Two Wavelengths of Light on the Photosynthesis of Algae
Made available in DSpace on 2015-05-12T17:12:21Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 6100129.PDF: 9658882 bytes, checksum: 78fd704a19126ea4cbc7f26991496a24 (MD5) Previous issue date: 1960
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An interferometric study of molecular emission around NGC 7538 at millimeter wavelengths
ETDs are only available to UIUC Users without author permission
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Observations of protostellar systems across sub/millimeter wavelengths in nearby molecular clouds
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-03-28 without embargo terms
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Probing Power-Absorbing Structures at Near-Infrared Wavelengths using Energy Absorption Interferometry
… the application of EAI at near-infrared wavelengths. We describe the theoretical basis of EAI and numerically investigate its feasibility at infrared wavelengths. We present for the first time the design of a room-temperature, fiber-based, 1550 nm-wavelength experiment and its …
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High resolution Doppler spectroscopy of a transiting ultra-hot Jupiter at optical wavelengths
… constituents of the UHJ WASP-121b at optical wavelengths, using a single transit from VLT/UVES. Until recently, this was a wavelength regime little-explored in hot Jupiter atmospheres using cross-correlation techniques. Using the Doppler spectroscopy method, which takes advantage of the high …
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