Chair of solid state physics . ... The Physics of Phonons . ... In the first part of the course “The Physics of Phonons” the dynamics of atoms in one- and three- dimensional crystalline lattices is considered in detail. The quasiparticle conception in solids, taking phonons as an example, is discussed; creation and annihilation operators of phonons, main properties of acoustic and optical phonons dispersion laws, density of phonon states. ... Crystalline state. ... Acoustic and optical phonons. ...

Representation Theory studies how a given group may act on vector spaces. It is a fundamental tool to study groups using linear algebra. ... The course aims to introduce basic concepts and results of the classical theory of complex representations of finite groups and simplest examples of representations of Lie groups and Lie algebras. ... Examples of Lie groups and Lie algebras. ... Representations of Lie algebra sl(2,C). ... Connection between representations of Lie groups and Lie algebras. ...

M1 image More About M1 Nice Color Picture . ... M16 image More About M16 HST image . ... M31 image More About M31 Nice Color Picture . ... M42 image ; M43 image More About M42/43 Nice Color CCD Picture . M51 image More About M51 Color Image of M51 M51 Supernova . M57 image More About M57 Nice Color CCD Picture Very Deep M57 Image . ... M81 image More About M81 M81 Supernova Ultraviolet Image of M81 More about Ultraviolet Imaging . M82 image More About M82 M82 False Color M82 True Color . ...

The efficiency of interaction of radiation with a particle and hence its optical properties depend on the particle chemical composition, size, shape, structure, etc. ... Particle size expressed in units of the wavelength of incident radiation, together with chemical composition, most strongly affects the optical properties of a scatterer. ... There are many methods to solve the light-scattering problem for a homogeneous spheroid (our survey of the light-scattering methods see here ). ...

Next: The Stopping Radius in Up: ``Ecology'' of Magnetic Rotators Previous: The Environment of the . Now we consider qualitatively the effect of the electromagnetic field of a magnetic rotator on the accreting plasma. ... What is important is that both relativistic particles and magnetic dipole radiation will transfer their momentum and hence exert pressure on the accreting plasma. ... 2) The pressure of the accreting plasma is high enough to permit the plasma to enter the light cylinder . ...

... The initial descriptions of the FITS format provided a simplified method for describing the physical coordinate values of the image pixels, but deliberately did not specify any of the detailed conventions required to convey the complexities of actual image projections. ... They were CRPIX n for the reference pixel location on pixel axis n , CRVAL n for the coordinate value at that pixel, CDELT n for the increment at that pixel in the coordinate value, and CTYPE n for the type of coordinate. ...

stringold . ... usr/local/Python-2.5/lib/python2.5/stringold.py . Module Docs . Common string manipulations. ... whitespace -- a string containing all characters considered whitespace . ... Return the floating point number represented by the string s. atoi (*args) . ... Return a copy of the string s with only its first character . ... a single space. center (s, width) . ... Return a copy of the string s with all tab characters replaced . ... split (str [,sep [,maxsplit]]) -> list of strings . ...

Blackholes2 Forum Message . Forums: . Atm ћ Astrophotography ћ Blackholes ћ Blackholes2 ћ CCD ћ Celestron ћ Domes ћ Education . ... Post . ... Could This Be Considered The .. ... Post Message | ... www.astronomy.net . About Astronomy Net | ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

P. Frisch - Warm partially ionized interstellar gas at the Sun . ... W. M. Goss - Time variations in small-scale galactic HI structure toward 3C138 . S. Stanimirovic - Does tiny-scale atomic structure exist in the ISM? ... T. Bania - The distance to molecular clouds via HI self-absorption . ... C. Heiles - Arecibo Millennium Survey statistics of magnetic field, column density and turbulence in the CNM . R. Crutcher - Magnetic fields in molecular clouds . ...

The first character in each record (line) of formatted output defines a carriage control character to the lineprinter, often called ASA-character, for a previous name of the US Standardization Organization ANSI. ... When using VAX/VMS for output first on a file, which is to be printed later on paper, it is advisable to use the extension .DAT . ... You use the compiler switch -vms f77 -vms prog.f and get the control characters removed from the screen output. ...

The HyperNews Linux KHG Discussion Pages . Forum: The Linux Kernel Hackers' Guide . Date: Mon, 05 Jan 1998 07:47:29 GMT . From: Karl Bullock < karl@dixie-net.com > . I have an application that needs the graphics characters for the default G1 character set, but I can't find the escape sequences for the G1 set anywhere. Anyone know where I can find the full G1 specification? .

Next: Additional information Up: Required observational data Previous: Timing information . Comments are so common, and so useful, that a 32-byte COMMENT column should be considered part of the basic data, even though it may be blank for the majority of the data. This field may be used to append comments to a particular observation, such as DOME IN THE WAY? ... The time field MJD_OBS should always be filled in, but the rest can remain undefined. ... Mon Jan 22 15:08:15 MET 1996 ...

... By means of deep optical images obtained at the Special Astrophysical Observatory 6-m telescope it was discovered that some Seyfert galaxies that were earlier considered to be non-interacting objects displayed signatures of elongated tidal envelopes belonging to satellite debris. ... Our results suggest that statistic studies based on popular imaging surveys (for example SDSS) can lead to an underestimation of the fraction of minor mergers among galaxies with active nuclei (AGN). ...

... Science . ... Science Users Information > Science Publications > Science Announcements > Presentation "ESO: Present and Future" at AAS Meeting . ... Observing Facilities . ... Instrumentation Development . Future Facilities and Development . ... Data Handling and Products . ... ESO Data . ... The ESO Director General, Tim de Zeeuw, presented a plenary talk at the 223rd American Astronomical Society meeting , held in Washington DC, 5-9 January 2014, entitled "ESO: Present and Future". ...

... International Year of Astronomy 2009 opens with a big Bang in Ireland . ... Astrophotography: The fundamentals - Wednesday 7 January 2008 . The title "The Universe, Yours to Discover" is the slogan for the International Year of Astronomy 2009. This incredible 3-D presentation will take you on a fascinating visual tour across time and space to discover and explore the universe of the modern astronomer. ... International Year of Astronomy, Ireland National Node . ...

... PRESENTATIONS . Session 1: Missions to Jupiter system . ... Lebreton J.-P. (Invited) . ... The Europa-Jupiter System Mission: study results and prospects . ... Session 2: Technical aspects of the Europa Lander mission . ... V. Sasi Prabhakaran (POSTER PRESENTATION) . ... Geophysical investigations for a landed mission to Europa . ... The surface composition of Europa and implications for a landed mission . ... Vorobyova E. Search for Life on Europa: Objectives for Lander Mission . ...

Альтернативный форум . Scientific.ru Все форумы . ... Михалыч - 09.10.2006 13:10 . ИМХО вне формата опроса . ... Fermion Interactions and Mass Generation in the Nilpotent Formalism . ... Keywords: nilpotent, mass gap, baryon, Higgs mechanism, vacuum . ... Strong, weak and electric interactions and the acquisition of nonzero mass by fermions and bosons can all be related to the nilpotent structure. ... Time, 09.10.2006 00:02 . ... ИМХО вне формата опроса Михалыч, 09.10.2006 13:10 . ...

Nongravitational Effects on Cometary Motion due to Jupiter . ... The problem of linking cometary apparitions before and after the approach of a comet to Jupiter was investigated. A hypothesis of possible existence of additional acceleration, perturbing the motion of comets in the vicinity of Jupiter, was considered. This nongravitational perturbation is described by a function of the jovicentric distance, written in a standard "force law" form. ...

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... HTML as an Application of SGML . ... HTML Public Text Identifiers . ... HTML as an Internet Media Type . text/html media type . ... Undeclared Markup Error Handling . ... Input Field: INPUT . Text Field: INPUT TYPE=TEXT . Password Field: INPUT TYPE=PASSWORD . Check Box: INPUT TYPE=CHECKBOX . Radio Button: INPUT TYPE=RADIO . Image Pixel: INPUT TYPE=IMAGE . Hidden Field: INPUT TYPE=HIDDEN . Submit Button: INPUT TYPE=SUBMIT . Reset Button: INPUT TYPE=RESET . ...