Lecture 7: Optical Characterization of Inorganic - CDT-PV
... Both phonon emission and absorption are possible for hv > Eg +Ep, so the absorption coefficient is given by ...
... Both phonon emission and absorption are possible for hv > Eg +Ep, so the absorption coefficient is given by ...
Perspectives for GAIA
... This study was supported by grants 13-394643 and 13-33324S provided by the Grant Agency of the Czech Republic. Full references on each OA are given in J. Greiner's Web page http://pwww.mpe.mpg.de/~jcg/grbgen.html. This research has made use of the observations provided by the ASM/RXTE team (Levine e ...
... This study was supported by grants 13-394643 and 13-33324S provided by the Grant Agency of the Czech Republic. Full references on each OA are given in J. Greiner's Web page http://pwww.mpe.mpg.de/~jcg/grbgen.html. This research has made use of the observations provided by the ASM/RXTE team (Levine e ...
Read the article - UMass Dartmouth
... Washington, and Livingston, Louisiana. But all gravitational waves are not equal. Drawing again on a non-science comparison, Fisher explains that if you could tap a white dwarf star it would ring like a bell, tinkling about every second because of its relatively high density—over a billion times tha ...
... Washington, and Livingston, Louisiana. But all gravitational waves are not equal. Drawing again on a non-science comparison, Fisher explains that if you could tap a white dwarf star it would ring like a bell, tinkling about every second because of its relatively high density—over a billion times tha ...
Plasmonic modes of gold nano-particle arrays on thin gold
... overall size of the arrays is 100 × 100 µm. For all array periods we observe one extinction peak at ∼ 520 nm and, additionally, a second peak which shifts to larger wavelength for larger array periods Λ. Additionally to these peaks, the extinction spectra show a rise towards longer wavelength. One c ...
... overall size of the arrays is 100 × 100 µm. For all array periods we observe one extinction peak at ∼ 520 nm and, additionally, a second peak which shifts to larger wavelength for larger array periods Λ. Additionally to these peaks, the extinction spectra show a rise towards longer wavelength. One c ...
Compact objects for everyone: I. White dwarf stars - Rose
... these enigmatic sources was due to Gold shortly after Hewish and Bell published their findings [10, 11]. Gold suggested that the radio signals were due to rapidly rotating neutron stars that, rather than emitting pulses of radiation, could emit a steady radio signal that it swept around in ...
... these enigmatic sources was due to Gold shortly after Hewish and Bell published their findings [10, 11]. Gold suggested that the radio signals were due to rapidly rotating neutron stars that, rather than emitting pulses of radiation, could emit a steady radio signal that it swept around in ...
Hyperfine Structure of Rubidium
... the sample, power will be absorbed by atoms in the sample and a detector picking up the beam on the other side would register a Doppler-broadened absorption spectrum as discussed above. Saturation absorption spectroscopy bypasses the Doppler broadening through the use of two separate beams. The high ...
... the sample, power will be absorbed by atoms in the sample and a detector picking up the beam on the other side would register a Doppler-broadened absorption spectrum as discussed above. Saturation absorption spectroscopy bypasses the Doppler broadening through the use of two separate beams. The high ...
Rotation of the Sun - University of California, Berkeley
... Age of the Sun We think that the Sun and Solar System formed from a single interstellar cloud all at the same time. So the oldest rocks in the Solar System should gives us an approximate age for the Sun as well. Rocks are dated using their relative abundances of radioactive elements and their decay ...
... Age of the Sun We think that the Sun and Solar System formed from a single interstellar cloud all at the same time. So the oldest rocks in the Solar System should gives us an approximate age for the Sun as well. Rocks are dated using their relative abundances of radioactive elements and their decay ...
transparencies - Indico
... modes] cannot be rigorously separated in the expanding universe. … this is a phenomenon of outstanding importance. With particles it would mean production or annihilation of matter, merely by expansion,… Alarmed by these prospects, I have examined the matter in more detail.” ...
... modes] cannot be rigorously separated in the expanding universe. … this is a phenomenon of outstanding importance. With particles it would mean production or annihilation of matter, merely by expansion,… Alarmed by these prospects, I have examined the matter in more detail.” ...
Population synthesis of Be/white dwarf binaries in the Galaxy
... of a compact companion are absorbed by the Be star envelope. The detection of a white dwarf is possible during the period when the Be star disc-like envelope is lacking by the detection of white dwarf extreme-UV and soft X-ray emission. This method of registration appears to be particularly promisin ...
... of a compact companion are absorbed by the Be star envelope. The detection of a white dwarf is possible during the period when the Be star disc-like envelope is lacking by the detection of white dwarf extreme-UV and soft X-ray emission. This method of registration appears to be particularly promisin ...
Biochemical sensors based on polymer microrings with sharp
... their large Q factors of resonance.2 These sensors rely on accurate measurement of the effective refractive index change due to the presence of biomolecules on the surface of sensing areas, or the presence of a solution surrounding the devices.3,4 Boyd and Heebner proposed that sensing can also rely ...
... their large Q factors of resonance.2 These sensors rely on accurate measurement of the effective refractive index change due to the presence of biomolecules on the surface of sensing areas, or the presence of a solution surrounding the devices.3,4 Boyd and Heebner proposed that sensing can also rely ...
Dark Resonances From Optical Pumping to Cold Atoms and
... in molecular physics [8] (for a review on STIRAP, see also [9]), is to avoid any spontaneous emission process from e, which would populate rovibrational states other than g2 where one wants to transfer molecules selectively. ...
... in molecular physics [8] (for a review on STIRAP, see also [9]), is to avoid any spontaneous emission process from e, which would populate rovibrational states other than g2 where one wants to transfer molecules selectively. ...
PHY2505 Lecture 5 - Atmospheric Physics
... angular distribution. This is a normalised non-dimensional parameter integrated over and ...
... angular distribution. This is a normalised non-dimensional parameter integrated over and ...
Pattern recognition of star constellations for spacecraft
... of the imaging device is known, and thus the attitude of the spacecraft. One approach is to sweep the sky with a spectral sensitive device in order to recognize a known spectral distribution from a specific star. When the star is recognized the attitude control system locks on the specific star. Ano ...
... of the imaging device is known, and thus the attitude of the spacecraft. One approach is to sweep the sky with a spectral sensitive device in order to recognize a known spectral distribution from a specific star. When the star is recognized the attitude control system locks on the specific star. Ano ...
The Square Kilometre Array Fact sheet for journalists
... seen with an optical telescope and can reveal areas of space that may be obscured with cosmic dust. Signals received by the SKA will be transferred to a central high performance super computer by optical fibres. The rate at which the vast quantities of data will be transferred to the supercomputer w ...
... seen with an optical telescope and can reveal areas of space that may be obscured with cosmic dust. Signals received by the SKA will be transferred to a central high performance super computer by optical fibres. The rate at which the vast quantities of data will be transferred to the supercomputer w ...
To Measure the Sky: An Introduction to Observational Astronomy.
... Instead of the altitude, astronomers sometimes use its complement, z, the zenith distance (:TOP in the figure). The (a, e) coordinates of an object clearly describe where it is located in an observer’s sky. You can readily imagine an instrument that would measure these coordinates: a telescope or oth ...
... Instead of the altitude, astronomers sometimes use its complement, z, the zenith distance (:TOP in the figure). The (a, e) coordinates of an object clearly describe where it is located in an observer’s sky. You can readily imagine an instrument that would measure these coordinates: a telescope or oth ...
Effects of Gravitation
... distances leads to a very large intensity, a bright night sky. Another way to look at it is to realize that in a homogeneous infinite universe along any direction your sight line must ultimately hit a star. This is Olber’s Paradox – why is the night sky dark? Of course, this picture has to be modifi ...
... distances leads to a very large intensity, a bright night sky. Another way to look at it is to realize that in a homogeneous infinite universe along any direction your sight line must ultimately hit a star. This is Olber’s Paradox – why is the night sky dark? Of course, this picture has to be modifi ...
Total Internal Reflection - Halton Catholic District
... • Usually good diamonds have a high refractive index which means that diamonds have a very small critical angle. So a great deal of incident light undergoes total internal reflection inside the diamond. • A light ray can bounce around several times inside the diamond before eventually exiting throug ...
... • Usually good diamonds have a high refractive index which means that diamonds have a very small critical angle. So a great deal of incident light undergoes total internal reflection inside the diamond. • A light ray can bounce around several times inside the diamond before eventually exiting throug ...
Introduction to Diffraction Grating
... layer of aluminum by vacuum deposition. Parallel, equally spaced grooves are ruled in a groove profile. The ruling engine must be able to retrace the exact path of the diamond forming tool on each stroke and to index (advance) the substrate a predetermined amount after each cut. Numerous test gratin ...
... layer of aluminum by vacuum deposition. Parallel, equally spaced grooves are ruled in a groove profile. The ruling engine must be able to retrace the exact path of the diamond forming tool on each stroke and to index (advance) the substrate a predetermined amount after each cut. Numerous test gratin ...
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.