... A dynamo (or electric generator) is a device converting . ... Faraday discovered that by moving a magnet next to a closed electric circuit, or changing the magnetic field passing through it, an electric current could be "induced" to flow in it. ... Faraday's disk dynamo Faraday showed that another way of inducing the current was to move the electric conductor while the magnetic source stood still. ... Faraday's disk dynamo needs a magnetic field in order to produce an electric current. ...

... A dynamo (or electric generator) is a device converting . ... Faraday discovered that by moving a magnet next to a closed electric circuit, or changing the magnetic field passing through it, an electric current could be "induced" to flow in it. ... Faraday's disk dynamo Faraday showed that another way of inducing the current was to move the electric conductor while the magnetic source stood still. ... Faraday's disk dynamo needs a magnetic field in order to produce an electric current. ...

... Forum: The Linux Kernel Hackers' Guide . Keywords: direct copy, user space, kernel space . ... in my first kernel-related project, i want to copy data in the kernel from one process to another. I have the start point/size of the user-level buffers, but i found no way to do a _direct_ copy. ... Of course, i could do a kmalloc, copy to kernel, wake up the read, copy from the kmalloc'd area, kfree the area, but ... that is too much overhead. ...

... Stellar Evolution is driven entirely by the never ending battle between Pressure and Gravity . As imbalances are reached, the star is driven to find a new Energy source. ... Pressure and gravitational forces are equal, the star is stable and its core is sufficiently hot to fuse Hydrogen into Helium More about main sequence stars . ... The luminosity generated by the core fusion of Helium into Carbon is far greater than the shell luminosity associated with the fusion of Hydrogen into Helium. ...

Radio Interferometry Principles . Radio Interferometry Signal Processing . ... A radio interferometer consists of a pair of directional antennas that are tuned to receive radio emissions from a source in a desired RF band. ... The antennas are pointed at the radio source of interest and are set up to receive the signal and process it into a form suitable for transmission to the correlator. ... In connected element interferometry, the digital signal goes directly to the correlator. ...

... Detailed information about each program can be found in the separate manual pages. blockmean L2 (x,y,z) data filter/decimator blockmedian L1 (x,y,z) data filter/decimator blockmode Mode (x,y,z) data filter/decimator filter1d Filter 1-D data sets (time series) fitcircle Finds the best-fitting great circle for a set of points gmtconvert Convert between ASCII and binary 1-D ... Wessel, P., and W. H. F. Smith, 1991, Free Software Helps Map and Display Data, EOS Trans., ...

... Posts tagged ?signal processing? ... Posted by hlee . ... Category: Algorithms , arXiv , Cross-Cultural , Data Processing , Fitting , Imaging , Methods , Quotes , Spectral , Stat , Uncertainty | ... ArXiv] 2nd week, Mar. ... Algorithms arXiv Astro Bad AstroStat Bayesian CHASC Cross-Cultural Data Processing Fitting Frequentist Galaxies gamma-ray High-Energy Imaging Jargon Job Languages MC MCMC Meta Methods Misc News Nuggets Objects Optical Physics Quotes Spectral Stars Stat Timing Uncertainty X-ray ....

... Nuclear processes within stars first convert hydrogen to helium, then helium to carbon, and eventually to heavier elements. ... In one model, a low-mass star which has finished its evolution as a red giant contracts to become a white dwarf, passing through a phase when it illuminates a planetary nebula. ... Convection will thoroughly mix the outer layers of this star to give the mixture of helium and carbon seen in RCBs. ... Figure 3: Internal structure of an RCB star . ...

... Return To Cydonia . ... Yesterday the Mars Global Surveyor project released a new close-up image of a portion of the Cydonia region on Mars. ... The Pleiades star cluster is one of the jewels of the northern sky. To the unaided eye it appears as a lovely and tantalizing grouping of stars in the constellation of Taurus, while telescopic views reveal cluster stars surrounded by delicate blue wisps of dust-reflected starlight. ... Hen 1357: New Born Nebula . ... Iridium Flare . ...

Amanda Karakas One of the most important research fields in astrophysics is the study of the origin of the elements. ... Asymptotic Giant Blanch (AGB) Stars: For low and intermediate-mass stars (with initial masses between about 0.8 to 8 solar masses) the most important nucleosynthesis occurs when stars evolve off the main sequence to the giant branches. ... This indicates that these stars obtained their unusual abundances via mass transfer from a previous red giant star, that has long evolved away. ...

When you enter a command at the shell prompt, your shell forks a child process in which to execute the command. The parent process (your shell) waits for the command to complete and for its child process to die. Until then you are unable to enter another command. Commands entered in this way are known as foreground processes . Once the command completes and the child process dies, the parent process is reactivated, the shellprompt returns, and you can enter another command. ...

... Omgsource is an interactive SAS task which enables the user to reprocess an OSW rotated grism-image produced by the SAS task omgchain . ... The task allows the user to interactively select spectra from the input image: the width and height of the central spectrum extraction region, the widths and offsets (from the central extraction region) of the two background regions (one either side of the central region) can be varied. ... The spectrum plot file is produced using the SAS task omgrismplot . ...

A limit on the ultra-high-energy neutrino flux from Centaurus A Justin Bray For the LUNASKA collaboration Clancy James, Ron Ekers, Chris Phillips, Paul Roberts, John Reynolds, Rebecca McFadden, Ray Protheroe, Jaime Alvarez-MuЯiz, Justin Bray Outline: · Ultra-high-energy (UHE) cosmic rays neutrinos · Detecting UHE neutrinos · The lunar Cherenkov technique · Observations with the ATCA · Observations with Parkes · ASKAP and the future ... Detection Geometry Neutrinos are penetrating.. ...

Microsymposium 34, MS047, 2001 SOME PROBLEMS OF THE EVOLUTION OF ASTEROIDS ­ RUBBLE PILE. ... Evidently, we can distinguish two processes: distant interactions, where there is no direct contact between separate fragments, and close contact interactions, where the fragments collide with one another. ... Such a rubble pile with a dust atmosphere differs from a cometary nucleus only in the absence of a volatile gas component, which is usually considered the cause of the appearance of cometary dust. ...

. A gamma-ray pulsar is a compact neutron star that accelerates charged particles to relativistic speeds in its extremely strong magnetic field. This process produces gamma radiation (violet) far above the surface of the compact remains of the star, while radio waves (green) are emitted over the magnetic poles in the form of a cone. The rotation sweeps the emission regions across the terrestrial line of sight, making the pulsar light up periodically in the sky. б© NASA/Fermi/Cruz de Wilde

... Institutes of Chernogolovka . The largest of all the scientific institutions of the center is the Institute of Chemical Physics in Chernogolovka , where fundamental problems of chemical physics are studied: kinetics and mechanisms of chemical and biological processes; processes of combustion, explosion, and polymerization; and mechanisms of elementary reactions involving high energy particles. ... Developments and Technologies . ...

Electron-Bombarded, Back-Illuminated CCD Sensors . For Low-Light-Level Imaging Applications . ... Damage to the gate structure oxide layers from keV level X-rays will likely result in increased dark current and decreased full-well capacity. ... Figure 14 shows the increase in dark current versus incident electron energies. ... The back-thinned CCD's 'lifetime' is defined, herein, to be a 50 electron per pixel increase in CCD dark current per 16.7 millisecond integration period. ...

... Bojan Nikolic web pages (r. 329) . ... The PGPLOT package can produce high quality postscript output. ... I?ve found that the following sequence of post-processing operations produces identical output and often much smaller files: . ... eps2eps infile.eps interfile1 . ... Above infile.eps is the postcript figure as produced by PGPLOT, interfile1 and interfile2 are intermediate files and finalfile.eps is the final compressed encapsulated postscript figure. ...

... Satellite data ] . ... The SCANOR system provides receiving and processing of the Earth-surface pictures made in visible and infra-red bands and transferred by satellites of the NOAA polar orbiter series (in the HRPT mode). ... The SCANOR system includes the desktop receiving device connected to an IBM AT 386 type computer, and the parabolic antenna with the guiding mechanism. The SCANOR system possesses the state-of-art software providing registration and processing of the received data. ...

... Science Activities > PhD Thesis Topics offered by ESO Faculty Members > Thesis Topic: The role of magnetic fields in the intermediate-mass star formation process . ... Spectropolarimetric observations of Herbig Ae/Be stars indicate that magnetic fields are important ingredients of intermediate mass star formation. To properly understand the physics involved in the intermediate mass star formation process, it is particularly important to know the origin of the magnetic fields in these stars. ...