Paper
... With the realization of coherent, laserlike atoms in the form of Bose-Einstein condensates it has become possible to explore matter-wave amplification, a process in which the number of atoms in a quantum state is amplified due to bosonic stimulation. Stimulation has been observed in the formation of ...
... With the realization of coherent, laserlike atoms in the form of Bose-Einstein condensates it has become possible to explore matter-wave amplification, a process in which the number of atoms in a quantum state is amplified due to bosonic stimulation. Stimulation has been observed in the formation of ...
Gravitational Lenses and Unconventional Gravity Theories
... The issue of lensing by dark haloes has also been examined by observations of the lensing effects of forground galaxies on background galaxies within projected separations between 10 kpc and 200 kpc i.e., weak gravitational imaging (Tyson et al. 1984). In this situation of large projected separation ...
... The issue of lensing by dark haloes has also been examined by observations of the lensing effects of forground galaxies on background galaxies within projected separations between 10 kpc and 200 kpc i.e., weak gravitational imaging (Tyson et al. 1984). In this situation of large projected separation ...
Links Between Pulsation and Line-Driven Mass Loss in Massive Stars
... These may stem from large-scale surface structure that induces spiral wind variation analogous to solar Corotating Interaction Regions. ...
... These may stem from large-scale surface structure that induces spiral wind variation analogous to solar Corotating Interaction Regions. ...
Estimating the Age of Supernova Remnants - Chandra X
... Estimating the Age of Supernova Remnants – Pencil & Paper Version Purpose: To use the observed size of the Cassiopeia A supernova remnant (SNR) from its X-ray image and an estimated rate of expansion to calculate its approximate age. Background: ...
... Estimating the Age of Supernova Remnants – Pencil & Paper Version Purpose: To use the observed size of the Cassiopeia A supernova remnant (SNR) from its X-ray image and an estimated rate of expansion to calculate its approximate age. Background: ...
Probing atmospheric electric fields in thunderstorms through radio
... shape of the intensity pattern depends on the atmospheric depth where the number of shower particles is largest, Xmax , and that the absolute field strength of the radio emission scales with the energy of the primary particle. The radio footprints of 58 of the 762 air showers are very different from ...
... shape of the intensity pattern depends on the atmospheric depth where the number of shower particles is largest, Xmax , and that the absolute field strength of the radio emission scales with the energy of the primary particle. The radio footprints of 58 of the 762 air showers are very different from ...
The Flow of Energy Out of the Sun
... photons instead of line photons. The energy level of continuum photons is not well matched to the atom of gas. The electrons of an atom are kicked into higher orbits only when exactly the right amount of energy is provided by the photon. Continuum photons provide either too much or too little energy ...
... photons instead of line photons. The energy level of continuum photons is not well matched to the atom of gas. The electrons of an atom are kicked into higher orbits only when exactly the right amount of energy is provided by the photon. Continuum photons provide either too much or too little energy ...
Hewitt/Lyons/Suchocki/Yeh, Conceptual Integrated Science
... Copyright © 2008 Pearson Education, Inc., publishing as Pearson Addison-Wesley ...
... Copyright © 2008 Pearson Education, Inc., publishing as Pearson Addison-Wesley ...
The Flow of Energy Out of the Sun
... A sub-microscopic simulation, called Interaction, allows you to study how an individual line or continuum photon interacts with atoms. The Line Formation simulation demonstrates how photons that have just the right amount of energy to kick an electron of a gas atom to a higher energy state are absor ...
... A sub-microscopic simulation, called Interaction, allows you to study how an individual line or continuum photon interacts with atoms. The Line Formation simulation demonstrates how photons that have just the right amount of energy to kick an electron of a gas atom to a higher energy state are absor ...
galaxy formation and evolution - Yale Astronomy
... the correlations among them that are embodied in the Hubble classification sequence. In this contribution, I shall review some of the current ideas about the formation and evolution of galaxies, and also discuss the extent to which they can account for the various observed properties of galaxies. A ...
... the correlations among them that are embodied in the Hubble classification sequence. In this contribution, I shall review some of the current ideas about the formation and evolution of galaxies, and also discuss the extent to which they can account for the various observed properties of galaxies. A ...
... order is the Coupled Wave Theory of Kogelnik5. During decades researchers in the field of Holography have used the analytical expressions deduced by Kogelnik to estimate the theoretical predictions of phase and amplitude, transmission and reflection volume holograms. Kogelnik assumed that only two o ...
Verification on Malus`s Law
... deducted by Malus and applied it into question. Hence, it will be better to let student explore and find out the deduction of Malus’s Law by collecting numerical data from a model. A set of data was collected and compared to the normalized intensity (!"# ! !) as shown in Figure 11. The experimental ...
... deducted by Malus and applied it into question. Hence, it will be better to let student explore and find out the deduction of Malus’s Law by collecting numerical data from a model. A set of data was collected and compared to the normalized intensity (!"# ! !) as shown in Figure 11. The experimental ...
Globular Cluster Bimodality in Isolated Elliptical Galaxies
... while Fornax dwarf spheroidal has 5 GCs (Kissler-Patig et al. 1997; Ashman & Zepf 1998). Fig. 1 shows the GC ω Centauri, the largest and brightest GC orbiting the MW. Most GCs probably formed at the same time as their host galaxies (Brodie & Strader 2006). Since they are the oldest objects that surv ...
... while Fornax dwarf spheroidal has 5 GCs (Kissler-Patig et al. 1997; Ashman & Zepf 1998). Fig. 1 shows the GC ω Centauri, the largest and brightest GC orbiting the MW. Most GCs probably formed at the same time as their host galaxies (Brodie & Strader 2006). Since they are the oldest objects that surv ...
Physical Properties of Wolf-Rayet Stars
... Annu. Rev. Astro. Astrophys. 2007.45:177-219. Downloaded from arjournals.annualreviews.org by STEWARD OBSERVATORY on 03/24/08. For personal use only. ...
... Annu. Rev. Astro. Astrophys. 2007.45:177-219. Downloaded from arjournals.annualreviews.org by STEWARD OBSERVATORY on 03/24/08. For personal use only. ...
Spectroscopy – Lecture 1
... This is Milne‘s second equation It says that in the case of radiative equilibrium the solution of the radiative transfer equation is found when Sn is known that satisfies this equation. ...
... This is Milne‘s second equation It says that in the case of radiative equilibrium the solution of the radiative transfer equation is found when Sn is known that satisfies this equation. ...
Helium-Neon Laser 1 Introduction
... mirrors to get that kind of distance). From the propagation theory of Gaussian beam, ...
... mirrors to get that kind of distance). From the propagation theory of Gaussian beam, ...
Document
... Jy) and obtain complete optical identifications. Obtain moderate resolution optical spectroscopy for every QSO regardless of optical magnitude. ...
... Jy) and obtain complete optical identifications. Obtain moderate resolution optical spectroscopy for every QSO regardless of optical magnitude. ...
Quantum Well Electron Gain Structures and Infrared Detector Arrays
... or 5x11 arcsec (GTC f/17 focus) • Spatial sampling 0.70” (0.35”/pix) on KPNO & 0.23” (0.12”/pix) on GTC; 960 spatial resolution elements • R~1300 spectroscopy over 1-2.4 microns (select J+H or H+K band for individual spectra) ...
... or 5x11 arcsec (GTC f/17 focus) • Spatial sampling 0.70” (0.35”/pix) on KPNO & 0.23” (0.12”/pix) on GTC; 960 spatial resolution elements • R~1300 spectroscopy over 1-2.4 microns (select J+H or H+K band for individual spectra) ...
1.3 lm integrated superluminescent light source Yang Liu Guotong Du
... Yang Liu *, Kun Liu, Junfeng Song, Yuchun Chang, Bonan Kang, Jingzhi Yin, ...
... Yang Liu *, Kun Liu, Junfeng Song, Yuchun Chang, Bonan Kang, Jingzhi Yin, ...
The Origins of Dark Matter, Dark Energy, and their
... eight minutes. This means that the sun you see is not in the same location as where it really is. You see it where it was eight minutes previously because that’s how long it took for the ...
... eight minutes. This means that the sun you see is not in the same location as where it really is. You see it where it was eight minutes previously because that’s how long it took for the ...
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.