Blar i Institutt for fysikk på tittel
Viser treff 1605-1624 av 2685
-
Numerical studies of the scattering of light from a two-dimensional randomly rough interface between two dielectric media
(Journal article; Peer reviewed, 2016)The scattering of polarized light incident from one dielectric medium on its two-dimensional randomly rough interface with a second dielectric medium is studied. A reduced Rayleigh equation for the scattering amplitudes ... -
Numerical studies of the transmission of light through a two-dimensional randomly rough interface
(Journal article; Peer reviewed, 2017)The transmission of polarized light through a two-dimensional randomly rough interface between two dielectric media has been much less studied, by any approach, than the reflection of light from such an interface. We have ... -
Numerical study of the droplet-interface dynamic related to liquid-liquid separators
(Master thesis, 2013)The CFD package OpenFoam with the VOF approach of the interFoam solver is used to simulate water drops in Exxsol D80 oil, with diameter ranging from 100 micrometer to 1000 micrometer. Parasitic currents are caused by the ... -
Numerical Study of the Interaction of Flow over Two Airfoils in Relative Motion
(Master thesis, 2011)Computational fluid dynamics (CFD) was be used to investigate aspects of interaction of flow over two airfoils in relatie motion in detail.%Problem statement2D tandem airfoil setups were studied, where the leading airfoil ... -
Numerisk modellering av noe kvantesystemer
(Master thesis, 2016)Denne avhandlingen har rapportert gjerninger gjort over mange år, samle notater og programmer fra ulike stadier av utviklingen. For dette årsaken kan det inneholde noe utilsiktet repetisjon av innhold, og (Like utilsiktet) ... -
Numeriske metoder og programmering i fysikk 1
(Master thesis, 2023)Med fagfornyelsen ble det vedtatt at norske fysikkelever skal arbeide mer digitalt. Denne digitaliseringen kommer spesielt til syne i fysikk 1 gjennom kompetansemålet: «… eleven skal kunne bruke numeriske metoder og ... -
o-Quinonoid Heterocycles: Synthesis and Crystal Structure of 2,3-Dicyano-5,7-bismethylthieno[3,4-b]pyrazine
(Journal article; Peer reviewed, 2007)2,3-Dicyano-5,7-bismethylthieno[3,4-b]pyrazine (5), has been obtained as a minor product from reactions of S-nucleophiles with 5,6-di(1-bromoethyl)pyrazine-2,3- dicarbonitrile (3), or from a condensation of 4-hydroxy-2 ... -
Observasjon i kvantefysikk: Ein studie av elevforståingar
(Master thesis, 2018)Denne oppgåva er gjort i samband med forskings- og utviklingsprosjektet ReleKvant, som tek for seg elevar si forståing av moderne fysikk, og utviklar nettbaserte læringsressursar innan temaet som er tilpassa kompetansemål ... -
Observation in quantum physics: challenges for upper secondary physics students in discussing electrons as waves
(Journal article; Peer reviewed, 2019)Quantum physics is challenging for young students, but also a source of fascination. Observation is a key concept in order to understand how principles and experimental results in quantum physics differ from what we are ... -
Observation of a mesospheric front in a thermal-doppler duct over King George Island, Antarctica
(Journal article; Peer reviewed, 2011)A mesospheric front was observed with an all-sky airglow imager on the night of 9–10 July 2007 at Ferraz Station (62° S, 58° W), located on King George island on the Antarctic Peninsula. The observed wave propagated from ... -
Observation of Electric-Field-Induced Structural Dislocations in a Ferroelectric Oxide
(Peer reviewed; Journal article, 2021)Dislocations are 1D topological defects with emergent electronic properties. Their low dimensionality and unique properties make them excellent candidates for innovative device concepts, ranging from dislocation-based ... -
Observation of magnetic state dependent thermoelectricity in superconducting spin valves
(Peer reviewed; Journal article, 2023)Superconductor-ferromagnet tunnel junctions demonstrate giant thermoelectric effects that are being exploited to engineer ultrasensitive terahertz radiation detectors. Here, we experimentally observe the recently predicted ... -
Observation of Quasiperiodic Structures in the Hydroxyl Airglow on Scales Below 100 m
(Journal article; Peer reviewed, 2018)Gravity waves are known to transport energy and momentum to the middle atmosphere. The breaking processes associated with divergence of fluxes of energy and momentum into the atmosphere occur on scales that cannot be ... -
Observation of the boson peak in a two-dimensional material
(Peer reviewed; Journal article, 2023)The boson peak is an excess in the phonon vibrational density of states relative to the Debye model. It has been observed in a wide range of amorphous materials, from inorganic glasses to polymers. Two-dimensional random ... -
Observation of Unconventional Dynamics of Domain Walls in Uniaxial Ferroelectric Lead Germanate
(Peer reviewed; Journal article, 2020)Application of scanning probe microscopy techniques such as piezoresponse force microscopy (PFM) opens the possibility to re‐visit the ferroelectrics previously studied by the macroscopic electrical testing methods and ... -
Observational evidence of the influence of Antarctic stratospheric ozone variability on middle atmosphere dynamics
(Journal article; Peer reviewed, 2015)Modeling results have suggested that the circulation of the stratosphere and mesosphere in spring is strongly affected by the perturbations in heating induced by the Antarctic ozone hole. Here using both mesospheric MF ... -
Observations of gravity wave forcing of the mesopause region during the January 2013 major Sudden Stratospheric Warming
(Journal article; Peer reviewed, 2014)Studies of vertical and interhemispheric coupling during Sudden Stratospheric Warmings (SSWs) suggest that gravity wave (GW) momentum flux divergence plays a key role in forcing the middle atmosphere, although observational ... -
Observations of nitric oxide in the Antarctic middle atmosphere during recurrent geomagnetic storms
(Journal article; Peer reviewed, 2013)We report ground-based measurements of the polar middle atmosphere made using a 230–250 GHz passive microwave radiometer deployed at Troll station (72°01′S 02°32′E, L shell of L = 4.8), Antarctica. Our observations show ... -
Observations of planetary waves in the mesosphere-lower thermosphere during stratospheric warming events
(Journal article; Peer reviewed, 2015-05-04)This study investigates the effect of stratospheric sudden warmings (SSWs) on planetary wave (PW) activity in the mesosphere–lower thermosphere (MLT). PW activity near 95 km is derived from meteor wind data using a chain ... -
OC2017 A-181 - Numerical modelling of (thin) oil films - Improved behaviour and life time of thin films in the OSCAR model
(Research report, 2017)The PETRO MAKS project "Formation and behaviour of thin oil films and evaluation of response methods including HSE", in the following short "Thin oil films" has the objective to achieve new knowledge more efficient and ...