Light emitting devices based on silicon nanostructures
... the raw capacity of the interconnection system. There are a variety of other difficulties that are readily quantified but that in the end could be dominant reasons for changing to a radical solution like optics. This includes issues such as voltage isolation, timing accuracy, and overall ease of des ...
... the raw capacity of the interconnection system. There are a variety of other difficulties that are readily quantified but that in the end could be dominant reasons for changing to a radical solution like optics. This includes issues such as voltage isolation, timing accuracy, and overall ease of des ...
Ultracompact high-efficiency polarizing beam splitter with a hybrid
... The magnitude squared of the time-averaged electric f ield (TM) and magnetic f ield (TE) at l 苷 1.55 mm are shown in Figs. 2(a) and 2(b), respectively. TMpolarized light is ref lected with 99.3% eff iciency at the PhC surface and guided along the vertical output waveguide; 0.06% of the incident ligh ...
... The magnitude squared of the time-averaged electric f ield (TM) and magnetic f ield (TE) at l 苷 1.55 mm are shown in Figs. 2(a) and 2(b), respectively. TMpolarized light is ref lected with 99.3% eff iciency at the PhC surface and guided along the vertical output waveguide; 0.06% of the incident ligh ...
Unraveling the Helix Nebula: Its Structure and Knots
... the local ionization front. This supports a scenario in which the knots are formed in or near the ionization front and are then sculpted by the stellar radiation from the central star as the ionization front advances beyond them. ...
... the local ionization front. This supports a scenario in which the knots are formed in or near the ionization front and are then sculpted by the stellar radiation from the central star as the ionization front advances beyond them. ...
Pair instability supernovae: Evolution, explosion, nucleosynthesis
... supernovae are exploding in the visible Universe each second, and at present there are a few of them discovered every day. The average peak luminosity of a supernova competes with that of entire galaxies. Supernovae are the main contributor of heavy elements, energy and momentum to the interstellar ...
... supernovae are exploding in the visible Universe each second, and at present there are a few of them discovered every day. The average peak luminosity of a supernova competes with that of entire galaxies. Supernovae are the main contributor of heavy elements, energy and momentum to the interstellar ...
This presentation
... ultraviolet and X-rays. They are produced by extreme forces of energy and by atomic decay. The COMPTEL catalog comprises 63 gamma-ray sources. Thirty-two of these are steady sources, such as neutron stars and black hole candidates; the remaining 31 are mysterious gamma-ray bursts, which outshine the ...
... ultraviolet and X-rays. They are produced by extreme forces of energy and by atomic decay. The COMPTEL catalog comprises 63 gamma-ray sources. Thirty-two of these are steady sources, such as neutron stars and black hole candidates; the remaining 31 are mysterious gamma-ray bursts, which outshine the ...
IX71/IX81 - Olympus Microscopy Resource Center
... As new fluorochromes are developed and new methods of light excitation and manipulation become more popular for live cell experiments, more and more researchers will require the use of low phototoxicity near-IR wavelengths in addition to the conventional visible spectrum. Olympus has equipped its IX ...
... As new fluorochromes are developed and new methods of light excitation and manipulation become more popular for live cell experiments, more and more researchers will require the use of low phototoxicity near-IR wavelengths in addition to the conventional visible spectrum. Olympus has equipped its IX ...
Observations, Modeling and Theory of Debris Disks
... (Eiroa et al. 2013). The DEBRIS survey, with flux-limited observations of 446 A through M nearby stars (Matthews et al. 2013b) has a median sensitivity of fd of just 2 × 10−5 but a faintest detected disk of 7 × 10−7 , approaching the level of the EKB. Based on Figures 2 and 3, increased sensitivity ...
... (Eiroa et al. 2013). The DEBRIS survey, with flux-limited observations of 446 A through M nearby stars (Matthews et al. 2013b) has a median sensitivity of fd of just 2 × 10−5 but a faintest detected disk of 7 × 10−7 , approaching the level of the EKB. Based on Figures 2 and 3, increased sensitivity ...
Trapezium Fracture
... When we look at this structure whose light has taken 1,500 years to reach us, we are glimpsing a vision of our own Sun and solar system’s creation 4.5 billion years ago. Current theory holds that our own Solar system was created out of a similar massive nebula. Within M42 are thousands of protostar ...
... When we look at this structure whose light has taken 1,500 years to reach us, we are glimpsing a vision of our own Sun and solar system’s creation 4.5 billion years ago. Current theory holds that our own Solar system was created out of a similar massive nebula. Within M42 are thousands of protostar ...
Reaction of tungsten anion clusters with molecular and atomic
... which dissociation of nitrogen is thermodynamically more favored with respect to the molecular chemisorption.18,19 Our experimental observations that molecular nitrogen is more stable than atomic nitrogen on W⫺ n with n⫽6 – 8 can be rationalized by an electronic model, in which metal to adsorbate ch ...
... which dissociation of nitrogen is thermodynamically more favored with respect to the molecular chemisorption.18,19 Our experimental observations that molecular nitrogen is more stable than atomic nitrogen on W⫺ n with n⫽6 – 8 can be rationalized by an electronic model, in which metal to adsorbate ch ...
The white dwarf population within 40 pc of the Sun
... faint and distant objects. Also, it is evident that the number of synthetic white dwarfs increases smoothly for increasing magnitudes up to Mbol ≈ 15.0, and that for magnitudes larger than this value there is a dramatic drop in the white dwarf number counts. Furthermore, for distances of ∼40 pc the ...
... faint and distant objects. Also, it is evident that the number of synthetic white dwarfs increases smoothly for increasing magnitudes up to Mbol ≈ 15.0, and that for magnitudes larger than this value there is a dramatic drop in the white dwarf number counts. Furthermore, for distances of ∼40 pc the ...
A. Big Bang Theory: A Failure from the Beginning
... matter that is still happening. A slow and gradual process of development is supposed to have followed the Big Bang, but the word of God accomplished creation rapidly, not over eons. Thus the Big Bang and biblical creation are opposites in their chronologies and in their durations. They are not comp ...
... matter that is still happening. A slow and gradual process of development is supposed to have followed the Big Bang, but the word of God accomplished creation rapidly, not over eons. Thus the Big Bang and biblical creation are opposites in their chronologies and in their durations. They are not comp ...
Unit 1.7 Optical networking and processing
... Large number of DWDM wavelengths possible means a large number of ports Needs to be remotely configurable, intelligent Should be non-blocking, any combination of dropped/added possible In addition, insertion loss, physical size, polarization effects, and switching times are ...
... Large number of DWDM wavelengths possible means a large number of ports Needs to be remotely configurable, intelligent Should be non-blocking, any combination of dropped/added possible In addition, insertion loss, physical size, polarization effects, and switching times are ...
9th Conference of Hel.A.S. Athens, 20
... Monitor of ESA Why the magnetic flux and the impulsive energy released in solar active regions follow a universal power law distribution? Instrumentation, observational techniques and first results from the total solar eclipse of July 22, 2009 in China ...
... Monitor of ESA Why the magnetic flux and the impulsive energy released in solar active regions follow a universal power law distribution? Instrumentation, observational techniques and first results from the total solar eclipse of July 22, 2009 in China ...
2 Mock Observation Plan - Cosmos
... fast enough that the GRB is sufficiently bright (mCrab level). In addition, some extra measurements are included based on our current knowledge (including the measurement of the correlation function in the COSMOS field). It should be noted, however, that not all these observations are required to ac ...
... fast enough that the GRB is sufficiently bright (mCrab level). In addition, some extra measurements are included based on our current knowledge (including the measurement of the correlation function in the COSMOS field). It should be noted, however, that not all these observations are required to ac ...
IV Interstellar Dust
... How important is dust? In our Galaxy the gas-to-dust ratio is about 100:1. Since the ISM is about 10% of the baryonic mass of the Galaxy, dust grains comprise roughly 0.1% of the total. At the same time, they absorb roughly 30-50% of the starlight emitted by the Galaxy and re-radiate it as farinfrar ...
... How important is dust? In our Galaxy the gas-to-dust ratio is about 100:1. Since the ISM is about 10% of the baryonic mass of the Galaxy, dust grains comprise roughly 0.1% of the total. At the same time, they absorb roughly 30-50% of the starlight emitted by the Galaxy and re-radiate it as farinfrar ...
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.