Diffraction Grating Handbook
... David Rittenhouse, in 1785, who reported constructing a half-inch wide grating with fifty-three apertures. Apparently he developed this prototype no further, and there is no evidence that he tried to use it for serious scientific experiments. In 1821, unaware of the earlier American report, Joseph v ...
... David Rittenhouse, in 1785, who reported constructing a half-inch wide grating with fifty-three apertures. Apparently he developed this prototype no further, and there is no evidence that he tried to use it for serious scientific experiments. In 1821, unaware of the earlier American report, Joseph v ...
Concentration effect of carbon nanotube based saturable
... pulses in picosecond and femtosecond regimes [1,2] and is often initiated by nonlinear optical elements with intensity-dependent response to favor optical pulsation over continuous–wave lasing [3]. The optical nonlinear element may be either a semiconductor saturable absorber mirror (SESAM) [1] or a ...
... pulses in picosecond and femtosecond regimes [1,2] and is often initiated by nonlinear optical elements with intensity-dependent response to favor optical pulsation over continuous–wave lasing [3]. The optical nonlinear element may be either a semiconductor saturable absorber mirror (SESAM) [1] or a ...
La Sapienza – 2015
... measure stellar parallaxes with unprecedented precision • Gaia space mission will feature accuracy of ~30micro arc-sec • Gaia is predicted to discover 10,000 planets using astrometry in our local surrounding alone ...
... measure stellar parallaxes with unprecedented precision • Gaia space mission will feature accuracy of ~30micro arc-sec • Gaia is predicted to discover 10,000 planets using astrometry in our local surrounding alone ...
On the Rising of the Pleiades
... Pleiades are too faint to be seen at sunset. The Handys clarify the meaning of the words ka hiki and Makahiki: It is important to understand that ka hiki, when applied to the origin or source of an introduced plant or to a traditional figure, did not necessarily refer to the island named Tahiti. Hik ...
... Pleiades are too faint to be seen at sunset. The Handys clarify the meaning of the words ka hiki and Makahiki: It is important to understand that ka hiki, when applied to the origin or source of an introduced plant or to a traditional figure, did not necessarily refer to the island named Tahiti. Hik ...
Photodissociation Spectroscopy and Dissociation Dynamics of TiO (CO )
... absorptions of this molecule. To understand the excited states without breaking the Ti+-O bond, one can attach a spy molecule like CO2 and then break the metal-ligand bond. We measured the photodissociation spectrum of TiO+(CO2) to characterize an excited state of the TiO+ chromophore. When TiO+ is ...
... absorptions of this molecule. To understand the excited states without breaking the Ti+-O bond, one can attach a spy molecule like CO2 and then break the metal-ligand bond. We measured the photodissociation spectrum of TiO+(CO2) to characterize an excited state of the TiO+ chromophore. When TiO+ is ...
Introduction - St. Olaf College
... Properties dialog. A large dipole moment indicates large separation of charge. You can attach the dipole moment vector, where the + side refers to the positive end of the dipole, to the model on the screen, by checking the box to the left of Display Dipole Vector near the bottom of the dialog. c) A ...
... Properties dialog. A large dipole moment indicates large separation of charge. You can attach the dipole moment vector, where the + side refers to the positive end of the dipole, to the model on the screen, by checking the box to the left of Display Dipole Vector near the bottom of the dialog. c) A ...
MULTIFREQUENCY VLBI STUDIES OF COMPACT EXTRAGALACTIC JETS by
... bound systems containing typically 107 − 1012 stars, interstellar gas and dust, and (probably) dark matter. The vast majority of them are labelled as ’normal’ galaxies whose radiative output is the combined shine of their billions of stars. Scattered among normal galaxies are intriguing systems show ...
... bound systems containing typically 107 − 1012 stars, interstellar gas and dust, and (probably) dark matter. The vast majority of them are labelled as ’normal’ galaxies whose radiative output is the combined shine of their billions of stars. Scattered among normal galaxies are intriguing systems show ...
Aligned AlN Nanorods with Multi-tipped Surfaces
... columnar nanorod, there are a number of uniform crystallites radially oriented along the main trunk. From the high-magnification SEM images shown in Figure 2d, it is observed that each columnar nanorod is composed of high-density AlN nanotips grown radially along the main trunk. The length and diame ...
... columnar nanorod, there are a number of uniform crystallites radially oriented along the main trunk. From the high-magnification SEM images shown in Figure 2d, it is observed that each columnar nanorod is composed of high-density AlN nanotips grown radially along the main trunk. The length and diame ...
TYPE II SUPERNOVAE AS DISTANCE INDICATORS by Mario
... in his or her judgment the proposed use of the material is in the interests of scholarship. In all other instances, however, permission must be obtained from the author. SIGNED: ...
... in his or her judgment the proposed use of the material is in the interests of scholarship. In all other instances, however, permission must be obtained from the author. SIGNED: ...
Word - The Open University
... to the other. In the context of optical-fibre communication, the light radiation we are concerned with is usually in the infrared region of the spectrum. To identify the position in the electromagnetic spectrum it is usual to refer to the wavelength of light, rather than its frequency. Thus I will r ...
... to the other. In the context of optical-fibre communication, the light radiation we are concerned with is usually in the infrared region of the spectrum. To identify the position in the electromagnetic spectrum it is usual to refer to the wavelength of light, rather than its frequency. Thus I will r ...
The recent star-formation history of the Large and Small Magellanic
... that, a field at 2.3◦ is currently active in star-formation, while fields at 4.4◦ , 5.5◦, and 7.1◦ have 100 Myr, 0.8 Gyr, and 1.5 Gyr old stars as the youngest population, respectively. Thus, the age of the youngest stars in each field gradually increases with distance from the center and the popula ...
... that, a field at 2.3◦ is currently active in star-formation, while fields at 4.4◦ , 5.5◦, and 7.1◦ have 100 Myr, 0.8 Gyr, and 1.5 Gyr old stars as the youngest population, respectively. Thus, the age of the youngest stars in each field gradually increases with distance from the center and the popula ...
submillimeter observations of giant molecular clouds in the large
... 300 K and note a trend that higher temperatures occur in moderatedensity regions, 100Y1000 cm3, and the lower temperatures in much denser regions, 10 4 Y10 5 cm3. These studies were preceded by a suggestion that significant amounts of warm molecular gas may exist in the LMC (Israel et al. 2003). K ...
... 300 K and note a trend that higher temperatures occur in moderatedensity regions, 100Y1000 cm3, and the lower temperatures in much denser regions, 10 4 Y10 5 cm3. These studies were preceded by a suggestion that significant amounts of warm molecular gas may exist in the LMC (Israel et al. 2003). K ...
Protoplanetary Disks and their Evolution
... quickly forms as more distant material with higher angular momentum falls inward. The disk will extend out to the centrifugal radius, which is expected to grow rapidly with time, R(t) ∝ Ω2 t3 , where Ω is the angular rotation rate of the core (Stahler et al. 1994). Disks should evolve rapidly, there ...
... quickly forms as more distant material with higher angular momentum falls inward. The disk will extend out to the centrifugal radius, which is expected to grow rapidly with time, R(t) ∝ Ω2 t3 , where Ω is the angular rotation rate of the core (Stahler et al. 1994). Disks should evolve rapidly, there ...
A Multi-wavelength study on gamma
... Firstly I’d like to express my gratitude to my Ph.D. supervisor, Dr. Bing Zhang. Bing has influenced me significantly both in research and in daily life. With his enthusiasm, his inspiration, and his great efforts to explain things clearly and simply, he always help make research fun during my study. B ...
... Firstly I’d like to express my gratitude to my Ph.D. supervisor, Dr. Bing Zhang. Bing has influenced me significantly both in research and in daily life. With his enthusiasm, his inspiration, and his great efforts to explain things clearly and simply, he always help make research fun during my study. B ...
Full text - Simon Fraser University
... (a) Optical image of exfoiated MoS2 on 100 nm thick SiO2 /Si substrate. (b) The Raman Spectrum of this thin region (red circle region in the optical image). The difference of the two modes may indicate that this might be three or four layers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
... (a) Optical image of exfoiated MoS2 on 100 nm thick SiO2 /Si substrate. (b) The Raman Spectrum of this thin region (red circle region in the optical image). The difference of the two modes may indicate that this might be three or four layers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
Kuchnig_CW8 - Sciences et techniques
... planetary conjunction by ~0.1 cycle weak secondary minimum (and first harmonic) evidence of tidal distortion of star? ...
... planetary conjunction by ~0.1 cycle weak secondary minimum (and first harmonic) evidence of tidal distortion of star? ...
Optical properties scattering - IMT
... Scattering function • The angular dependence of scattering is called the scattering function, p(q) which has units of [sr-1] and describes the probability of a photon scattering into a unit solid angle oriented at an angle relative to the ...
... Scattering function • The angular dependence of scattering is called the scattering function, p(q) which has units of [sr-1] and describes the probability of a photon scattering into a unit solid angle oriented at an angle relative to the ...
Adaptive Control of Ultrashort Laser Pulses for
... Curiosity and the desire to understand the world around them is one of the most valuable human traits that has helped to discover fundamental laws and to develop basic techniques to control fundamental processes. After mastering the laws of classical mechanics at the end of the 19th century, however ...
... Curiosity and the desire to understand the world around them is one of the most valuable human traits that has helped to discover fundamental laws and to develop basic techniques to control fundamental processes. After mastering the laws of classical mechanics at the end of the 19th century, however ...
Protoplanetary Disks and Their Evolution
... differentially rotating. Rather, it indicates that disks form quickly and that the flow of material from the envelope, which declines in mass by almost an order of magnitude between these two classes (Young et al. 2003), is rapidly transported through the disk. A likely cause of the rapid transport a ...
... differentially rotating. Rather, it indicates that disks form quickly and that the flow of material from the envelope, which declines in mass by almost an order of magnitude between these two classes (Young et al. 2003), is rapidly transported through the disk. A likely cause of the rapid transport a ...
01.01.2001 – 31.03.2003 - Archiv Physik
... D. Xue, K. Betzler, H. Hesse: Dielectric properties of I-III-VI2 type chalcopyrite semiconductors. Physical Review B15, 62, 13546 (2000). D. Xue, K. Betzler, H. Hesse, D. Lammers: Temperature dependence of the dielectric response of lithium niobate. J. Phys. Chem. Solids 62, 973 (2001). D. Xue, K. B ...
... D. Xue, K. Betzler, H. Hesse: Dielectric properties of I-III-VI2 type chalcopyrite semiconductors. Physical Review B15, 62, 13546 (2000). D. Xue, K. Betzler, H. Hesse, D. Lammers: Temperature dependence of the dielectric response of lithium niobate. J. Phys. Chem. Solids 62, 973 (2001). D. Xue, K. B ...
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.