Chapter 2 Introduction to Waveguide and Bragg Grating Theory 2.1
... particular, electromagnetic waves are of interest, more specifically, those at optical frequencies. To introduce waveguide theory consideration will first be given to light incident upon an interface between two materials before the approach is extended to a planar slab guide and then onto modelling ...
... particular, electromagnetic waves are of interest, more specifically, those at optical frequencies. To introduce waveguide theory consideration will first be given to light incident upon an interface between two materials before the approach is extended to a planar slab guide and then onto modelling ...
Direct Evidence for Termination of Obscured Star Formation by
... We present optical to far-infrared photometry of 31 reddened QSOs that show evidence for radiatively driven outflows originating from AGN in their rest-frame UV spectra. We use these data to study the relationships between the AGN-driven outflows, and the AGN and starburst infrared luminosities. We ...
... We present optical to far-infrared photometry of 31 reddened QSOs that show evidence for radiatively driven outflows originating from AGN in their rest-frame UV spectra. We use these data to study the relationships between the AGN-driven outflows, and the AGN and starburst infrared luminosities. We ...
Polarizers θ
... The anisotropic propagation v|| > v⊥ causes a distortion in the wavefront and changes the propagation (Poynting vector) direction indicated by S in the figure for the e-wave. Remember that S = v2εE×B, and represents the direction in which the irradiance of the wave propagates and thus defines the r ...
... The anisotropic propagation v|| > v⊥ causes a distortion in the wavefront and changes the propagation (Poynting vector) direction indicated by S in the figure for the e-wave. Remember that S = v2εE×B, and represents the direction in which the irradiance of the wave propagates and thus defines the r ...
Fluorescence Microscopy
... generate green light. This principle underlies “two-photon” or “multiphoton” microscopy (Zinselmeyer et al. 2009). This process can only be achieved by having a very high spatial and temporal density of photons, because the two absorbed photons must arrive simultaneously, which requires a relatively ...
... generate green light. This principle underlies “two-photon” or “multiphoton” microscopy (Zinselmeyer et al. 2009). This process can only be achieved by having a very high spatial and temporal density of photons, because the two absorbed photons must arrive simultaneously, which requires a relatively ...
Handbook of Optical Filters
... on the polarization state of the light. (Polaroid ® plastic film polarizer is the most common example.) To avoid confusion, the term “dichromatic” is sometimes used. ...
... on the polarization state of the light. (Polaroid ® plastic film polarizer is the most common example.) To avoid confusion, the term “dichromatic” is sometimes used. ...
Searching for Planets During Predicted Mesolensing Events: II
... probability of an event occurring is very low. In addition, detection can be made challenging through the “dazzling by the light of the much nearer star”, the lens. Einstein’s doubts have not deterred astronomers, with their familiarity of the universe of possible lenses and background sources, from ...
... probability of an event occurring is very low. In addition, detection can be made challenging through the “dazzling by the light of the much nearer star”, the lens. Einstein’s doubts have not deterred astronomers, with their familiarity of the universe of possible lenses and background sources, from ...
NMR SPectroscopy
... Just as when using Hund’s rules to fill atomic orbitals with electrons, nucleons must each have a unique set of quantum numbers ...
... Just as when using Hund’s rules to fill atomic orbitals with electrons, nucleons must each have a unique set of quantum numbers ...
The keV–TeV connection in gamma-ray binaries
... The gamma-ray emission from astrophysical sources is arguably different from the emission in the rest of the electromagnetic spectrum because it cannot be generated by hot matter. High energy gamma radiation is therefore an indication that non-thermal processes, which are able to concentrate a large ...
... The gamma-ray emission from astrophysical sources is arguably different from the emission in the rest of the electromagnetic spectrum because it cannot be generated by hot matter. High energy gamma radiation is therefore an indication that non-thermal processes, which are able to concentrate a large ...
Topology optimization of metal nanostructures for localized surface plasmon resonances BRIEF NOTE
... The coupling effect of dual nanostructures is one basic mechanism for the enhancement of LSPRs. Typical dual nanostructures include the dual nanodisks etc. (Sarid and Challener 2010). The topology optimization approach can be utilized to enhance the coupling effect of dual nanostructures, furthermor ...
... The coupling effect of dual nanostructures is one basic mechanism for the enhancement of LSPRs. Typical dual nanostructures include the dual nanodisks etc. (Sarid and Challener 2010). The topology optimization approach can be utilized to enhance the coupling effect of dual nanostructures, furthermor ...
Program and Abstract Book - European Southern Observatory
... The star formation process involves a wide range of spatial scales, densities and temperatures. Herschel observations of the cold and low density molecular gas extending tens of parsecs, that constitutes the bulk of the molecular clouds of the Milky Way, have shown a network of dense structures in t ...
... The star formation process involves a wide range of spatial scales, densities and temperatures. Herschel observations of the cold and low density molecular gas extending tens of parsecs, that constitutes the bulk of the molecular clouds of the Milky Way, have shown a network of dense structures in t ...
Diffraction
... In addition to the diffraction at a slit, in this experiment, the diffraction grating is also observed. The diffraction grating is a generalization of the diffraction at a double slit, which is an experiment with extreme importance in physics because of the transition from classical physics to quant ...
... In addition to the diffraction at a slit, in this experiment, the diffraction grating is also observed. The diffraction grating is a generalization of the diffraction at a double slit, which is an experiment with extreme importance in physics because of the transition from classical physics to quant ...
Paper
... per incident photon. In contrast, as shown in Ref. [5], a reflecting surface within the medium will recoil with a momentum of 2nhk per photon. In this case, the standing wave formed by the incident and reflected light pulse transfers momentum to the medium which remains even after the light puls ...
... per incident photon. In contrast, as shown in Ref. [5], a reflecting surface within the medium will recoil with a momentum of 2nhk per photon. In this case, the standing wave formed by the incident and reflected light pulse transfers momentum to the medium which remains even after the light puls ...
Ch a n d
... It is commonly accepted that spin-up of neutron stars by accretion in low-mass X-ray binaries (LMXBs) leads to the formation of radio millisecond pulsars (MSPs). However, so far only circumstantial evidence has existed for the evolutionary connection between the two classes. The recently discovered ...
... It is commonly accepted that spin-up of neutron stars by accretion in low-mass X-ray binaries (LMXBs) leads to the formation of radio millisecond pulsars (MSPs). However, so far only circumstantial evidence has existed for the evolutionary connection between the two classes. The recently discovered ...
CPW Science Passage
... CPW Science Passage 9th Grade An astronomy class is given the following facts about stellar evolution. 1. A star’s evolution can be divided in two 3 stages: pre-main sequence (pre-MS), main sequence (MS), and post-main sequence (post-MS). 2. Gravity causes part of a cloud of gas and dust to collapse ...
... CPW Science Passage 9th Grade An astronomy class is given the following facts about stellar evolution. 1. A star’s evolution can be divided in two 3 stages: pre-main sequence (pre-MS), main sequence (MS), and post-main sequence (post-MS). 2. Gravity causes part of a cloud of gas and dust to collapse ...
Formation of the First Galaxies: Theory and Simulations
... for primordial star-forming clouds. As we shall discuss in Section 3, the primordial gas is in general unable to cool as efficiently as metal-enriched gas, which leads in general to higher temperatures at fragmentation and so to a larger characteristic mass of the gravitationally unstable gas clouds ...
... for primordial star-forming clouds. As we shall discuss in Section 3, the primordial gas is in general unable to cool as efficiently as metal-enriched gas, which leads in general to higher temperatures at fragmentation and so to a larger characteristic mass of the gravitationally unstable gas clouds ...
On the asymmetry of the distribution of observable comets induced
... Using the original Monte Carlo simulation code we calculated the effects of stellar passages for wide ranges of the parameters. The perturber mass varied from 0.5 up to 5 solar masses, the minimum heliocentric distance from 10 000 to 100 000 AU and the stellar perturber velocity from 5 km s−1 to 50 ...
... Using the original Monte Carlo simulation code we calculated the effects of stellar passages for wide ranges of the parameters. The perturber mass varied from 0.5 up to 5 solar masses, the minimum heliocentric distance from 10 000 to 100 000 AU and the stellar perturber velocity from 5 km s−1 to 50 ...
Bonnell_2015_MNRAS_Early - St Andrews Research Repository
... 1 I N T RO D U C T I O N Star formation occurs inside giant molecular clouds (GMCs) in an hierarchical fashion. At the largest scales, clouds convert a small fraction, typically a few per cent, of their gas reservoir to stars before dispersing on time-scales of ∼10 Myr. Most stellar groupings dissol ...
... 1 I N T RO D U C T I O N Star formation occurs inside giant molecular clouds (GMCs) in an hierarchical fashion. At the largest scales, clouds convert a small fraction, typically a few per cent, of their gas reservoir to stars before dispersing on time-scales of ∼10 Myr. Most stellar groupings dissol ...
Devil physics The baddest class on campus IB Physics
... Using Cepheids to determine distance is useful up to a few Mpc and that is why they are referred to as ‘standard candles’ ...
... Using Cepheids to determine distance is useful up to a few Mpc and that is why they are referred to as ‘standard candles’ ...
Astronomical spectroscopy
Astronomical spectroscopy is the study of astronomy using the techniques of spectroscopy to measure the spectrum of electromagnetic radiation, including visible light, which radiates from stars and other hot celestial objects. Spectroscopy can be used to derive many properties of distant stars and galaxies, such as their chemical composition, temperature, density, mass, distance, luminosity, and relative motion using Doppler shift measurements.