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21. Astronomy HyperText Book: Interstellar Medium
Photon Scattering: Basic Principle of Photon Scattering . Audio Narration is available . No Scattering: Photon Source and Detector . ... For optical photons, scattering goes as wavelength to the -4 power. In the case of blue photons compared to red photons, this means that blue photons are about 10 times more likely to get scattered than red photons. ... Watch the blue photons scatter away from the detector . ... Interstellar dust make stars appear redder than they really are . ...
[ Сохраненная копия ]  Ссылки http://zebu.uoregon.edu/textbook/ism.html -- 4.2 Кб -- 23.01.1998
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22. http://www.stecf.org/conferences/adass/adassVII/reprints/teubenp.ps.gz
... GUI­fying and Documenting your Shell Script Peter. ... We describe a simple method to annotate shell scripts and have a preprocessor extract a set of variables, present them to the user in a GUI (using Tcl/Tk) with context sensitive help, and run the script. ... Tcl/Tk: TkRun The GUI that is created will provide a simple interface to a program that is spawned by the GUI. ... Sample Script: testscript Here is an example header from a C­shell script with which Figure 1 was made. ...
[ Текст ]  Ссылки http://www.stecf.org/conferences/adass/adassVII/reprints/teubenp.ps.gz -- 105.9 Кб -- 12.06.2006
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23. http://www.mccme.ru/dubna/2015/notes/triestino-ex2.pdf
Groups, ends and trees: exercises II Michele Triestino 2015-07-22 Exercise 1. ... Show that the function dS : G Ѕ G - G defined by dS (x, y) = x-1 y S is a distance on G and coincides with the graph distance on the Cayley graph of G with respect to generating set S. Exercise 4. ... Let S and S be two different finite generating sets of a group G. Show that the Cayley graphs (G, S) and (G, S) are quasi-isometric. ... Show that the Cayley graph of a finite group is quasi-isometric to a point. ...
[ Текст ]  Ссылки http://www.mccme.ru/dubna/2015/notes/triestino-ex2.pdf -- 64.8 Кб -- 22.07.2015
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24. Trigonometry beyond 90 degrees
... sin f = y / r . cos f = x / r . ... They are now viewed as new definitions of the sine and cosine, for the polar angle f given by x and y ( a slightly different way of formulating this definition is described further below ). ... sin 2 f + cos 2 f = 1 . ... Angle . ... Many trigonometry texts define the sine and cosine slightly differently, using the so-called unit circle . ... Then the distance AB ("the sine line") equals sin a , and the distance OA ("the cosine line") equals cos a . ...
[ Сохраненная копия ]  Ссылки http://www.iki.rssi.ru/mirrors/stern/stargaze/Itrig4.htm -- 10.8 Кб -- 03.12.2003
[ Сохраненная копия ]  Ссылки http://www.cosmos.ru/mirrors/stern/stargaze/Itrig4.htm -- 10.8 Кб -- 22.12.2007
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25. Trigonometry beyond 90 degrees
... In polar coordinates, the point P is defined by its distance r from the origin O (see drawing) and by its polar angle ("azimuth" on a map) between the x-axis and the "radius" r = OA, measured counter-clockwise. ... When one or both are negative , the angle f is larger than 90 degrees, and such angles never appears in any right-angled triangle. ... There is a simple solution , though: use the above equations to re-define sin f and cos f for such larger angles! ... But it also works for larger angles....
[ Сохраненная копия ]  Ссылки http://www.iki.rssi.ru/magbase/REFMAN/STARGAZE/Strig4.htm -- 8.8 Кб -- 11.03.1999
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26. http://www.gao.spb.ru/english/as/j2014/presentations/iddink.pdf
First results of X/S and X/Ka-band catalog combinations with full covariance information Andreas Iddink , Christopher Jacobs, Thomas Artz, Axel Nothnagel 22.09.2014 First results of S/X and X/Ka-band catalog combinations with full covariance information Andreas Iddink ­ 22.09.2014 Motivation Features of the ICRF2 ICRF2 (Defining- Sources ) 3414 ... Step: Import of the X/Ka catalog with full covariance information (Data provided by Christopher Jacobs et al. ...
[ Текст ]  Ссылки http://www.gao.spb.ru/english/as/j2014/presentations/iddink.pdf -- 2439.5 Кб -- 28.09.2014
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27. TCC UDP Packets
... Packet Format . ... The TCC broadcasts UDP packets containing position information. ... Packet Header . ... int4 . ... double . ... pos, vel double . ... pos, vel, time double . ... See the TCC Message Keywords Dictionary for full definitions of most items in the "data" section of the packet. pos, vel double is a structure containing two doubles: "pos" and "vel"; it contains the same information as the TCC's "coordinates" (p,v,t triplets), but with time given by the "TAIDate" entry in the packet. ...
[ Сохраненная копия ]  Ссылки http://www.apo.nmsu.edu/Telescopes/TCC/UDPPackets.html -- 9.3 Кб -- 07.11.2014
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28. http://www.cplire.ru/rus/telemed/HL7/Catalog.pdf
... It addresses: · · · · · · general description of document contents the macro structure of each document what parts, if any, are normative file formats for electronic publishing maintenance methodology (listed by section of the document) inter-document dependencies. ... Message Inf ormation Model a) General Introduction Maintenance method: formatted section. b) Graphical Representation Maintenance method: structured section. c) Literary Representation Maintenance method: structured section. ...
[ Текст ]  Ссылки http://www.cplire.ru/rus/telemed/HL7/Catalog.pdf -- 69.5 Кб -- 10.12.2002
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29. Meade Instruments Corporation - Pictor Manual Part 3
... Meade Instruments Corporation . ... Section 3: File Menu . ... Displays the dialog to open an existing image: . ... Saves the current image as a new file name or new file type, or both. ... This can be useful to prevent having 20 or more images open at once, and saves having to close them manually. ... This is done by creating a text file with the same name as the image file. ... Note that Image Information is saved within the FITS file, so there will not be a text file to accompany these files. ...
[ Сохраненная копия ]  Ссылки http://www.meade.com/manuals/pictor/pictor3.html -- 13.0 Кб -- 01.02.2006
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30. Brilliant! Thanks - an Astronomy Net Blackholes2 Forum Message
Blackholes2 Forum Message . Forums: . ... Brilliant! Thanks . ... My interpretation of the MM experiment was that it did not prove the speed of light was constant in all directions because it could not see direction. ... People assume that the space containing the experiment is rigid (or 4-D grid space-time with fixed scale. ... www.astronomy.net . ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...
[ Сохраненная копия ]  Ссылки http://www.astronomy.net/forums/blackholes2/messages/4927.shtml -- 16.9 Кб -- 09.04.2016
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31. xmgr: Help (draft)
... File . Read sets . ... Read one or more data sets. ... Read from: sets the source of the data, either a disk file or a pipe. ... These errors generally arise when an attempt is made to read a text file - xmgr relies on the interpretive capabilities of sscanf() to parse the data. xmgr will read data sets until there are no more sets available, after the maximum number of sets have been used, you'll need to free some sets using the [Kill] or [Kill all] items in the Edit/Set operations pullright. ...
[ Сохраненная копия ]  Ссылки http://xray.sai.msu.ru/~polar/xmgr/xmgr.html -- 46.7 Кб -- 25.08.1997
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