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http://www.badastronomy.com/mad/1999/spinstation.html.
http://www.badastronomy.com/mad/1999/spinstation.html.
1. A Loose Screw on HST: Its Effect on HST Observing Programs
A hardware problem in the HST power system has caused overcharging of 2 of the 6 on-board batteries, which, if nothing was done, could result in battery overheating and possible failure. ... This report describes the actions taken by the NASA Goddard HST Project to address this need and their effect on the scheduling of HST observing programs . ... An engineering analysis tentatively identified the fault as a loose screw connecting two copper bus bars. ... V1/Sun angle . ...
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Ссылки http://www.stsci.edu/uir/1999-04/UIR_1999_04.html -- 8.5 Кб -- 22.07.1999
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2. Educator's Guide to The Inverse Square Law
... How much brighter is the Sun as viewed from the planet Mercury as compared to Earth ? ... Actually, all of these questions can be answered through a very simple mathematical relationship known as the inverse square law. ... As the distance from the Sun increases the surface area of the sphere grows by the square of the distance. ... Common sense tells us that the Sun will be brighter and the inverse square law tells us how much brighter. ... gr = 0.912 G or 91.2% gravity felt at Earth's surface. ...
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Ссылки http://www.iki.rssi.ru/solar/eng/edu/invsquar.htm -- 11.4 Кб -- 15.10.1997
[ Сохраненная копия ] Ссылки http://www.arcetri.astro.it/irlab/Astro/solar/eng/edu/invsquar.htm -- 12.1 Кб -- 15.03.1998
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[ Сохраненная копия ] Ссылки http://www.arcetri.astro.it/irlab/Astro/solar/eng/edu/invsquar.htm -- 12.1 Кб -- 15.03.1998
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3. ASP: Effecting Global Change
Changing a World . What did the students learn from all this? ... The students found this unsatisfactory -- some of them would not be able to fit another astronomy class into their schedules, but they wanted to know about our planetary neighbors, and this project gave them the opportunity to find out without spending valuable class time on the subject. ... The students also learned to learn for themselves, perhaps one of the most important milestones during formal education. ...
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Ссылки http://www.astrosociety.org/edu/publications/tnl/48/change3.html -- 8.4 Кб -- 02.10.2012
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4. http://www.naic.edu/~phil/obsproblems/obsproblems.html
This is an incomplete list of problems people have had while observing (actually it's a list of problems i've worked on and got around to documenting). 12dec05: 9 level wapp pulsar folding is doing the 9 level correction incorrectly. 17apr05 sband bistatic radar run had pointing problems. 31jan05: single Pol/channel setups for spectral line wapp observing only provides 1 polarization. 02aug04: ripples in lbw around 1390,1400 Mhz. seen a1861(may04), p1914(aug04) . ...
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Ссылки http://www.naic.edu/~phil/obsproblems/obsproblems.html -- 4.7 Кб -- 12.12.2005
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5. xterm compatibility problems
September, 2008 The root of the problem is that people are morons, more particularly, developers are morons, very particularly, xterm developers are morons. ... In fairness, it's not really the xterm that's incompatible, it's the xterm descriptions that ship with modern operating systems that are incompatible with older xterms. ... The developers had to know that people would actually USE the cool new features they put into xterms. ... A modern xterm! ... Line 'em up along with the xterm developers. ...
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Ссылки http://hea-www.harvard.edu/~fine/opinions/xterm-problems.html -- 7.9 Кб -- 10.04.2016
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6. Ring Around the Galaxy
... The closer galaxy's gravity will act like a huge lens , pulling images of the background galaxy around both sides. ... The distorted galaxy is said to appear as an Einstein ring , named after Albert Einstein who accurately predicted many attributes of the gravitational lens effect -- although he also guessed that such an effect was unlikely to be seen in practice. ... NASA Official: Jay Norris. ... Abell 2218: A Galaxy Cluster Lens . Dark Matter Ring Modeled around Galaxy Cluster CL0024 17 . ...
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Ссылки http://www.astronet.ru/db/xware/msg/apod/1998-12-23 -- 14.5 Кб -- 15.08.2004
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7. Hands On; Transparency
... The problem turned out to be that I was always using the same background in Photoshop, and when I made it transparent, the edge pixels, having been anti-aliased to merge with that color, did not turn transparent. Now I always use the same background color in Photoshop that I intend to use on my web page. ... Now, one of the big tricks here involves the translation from RGB mode to Indexed Colors. ... Note down the 2 colors it chose to dither together and hit Command-Z to undo the mode change. ...
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Ссылки http://www.sai.msu.su/~megera/gimp/handson/HTML/transparency.html -- 9.9 Кб -- 22.12.2007
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8. Lagrangian Points
... With enough velocity, a spacecraft can break loose from the Earth's gravity and enter an orbit around the Sun, like that of a planet. If it then orbits the Sun with the same period as the Earth--one year--it may keep a fixed position relative to Earth. ... If the distance is just right--about 4 times the distance to the Moon or 1/100 the distance to the Sun--the spacecraft, too, will need just one year to go around the Sun, and will keep its position between the Sun and the Earth. ...
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Ссылки http://www.iki.rssi.ru/magbase/REFMAN/EAMAGSPH/wlagran.html -- 7.8 Кб -- 21.12.2007
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9. The Second All-Russian Research and Practical Conference 'Actual problems in
... Research areas . ... Events The Second All-Russian Research and Practical Conference 'Actual problems in Avionics Research: Theory, Service, Developments' . ... The Second All-Russian Research and Practical Conference 'Actual problems in Avionics Research: Theory, Service, Developments' "(AVIATOR) will take place at the Faculty of Aviation Equipment of the Military Educational and Scientific Centre of Air Force 'Air Force Academy named after Professor N. E. Zhukovskiy and Yu. ...
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Ссылки http://www.ssau.ru/engevents/show/?id=512 -- 20.9 Кб -- 25.02.2015
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10. http://zebu.uoregon.edu/~uochep/talks/talks05/emisin01-05.pdf
EMI test using VXD3 R20 assembly Nick Sinev, University of Oregon Outline The problem Why we want beam test? ... What do we need for test ? Conclusion January 7, 2005 Nick Sinev, MDI workshop, SLAC 2 The problem As you already know from M.Breidenbach talk, we had observed Electromagnetic Interference (EMI) effects in VXD3 operation. ... January 7, 2005 Nick Sinev, MDI workshop, SLAC 3 Why beam ? ... January 7, 2005 Nick Sinev, MDI workshop, SLAC 12 ...
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Ссылки http://zebu.uoregon.edu/~uochep/talks/talks05/emisin01-05.pdf -- 354.3 Кб -- 11.01.2005
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11. University Problem Based Learning Exercises for Teaching Astronomy and Physics
... The Australian National University] [Department of Physics] [Paul Francis] [Main Roleplay Page] . These exercises are my attempt to adapt the technique of Problem Based Learning to the context of introductory astronomy and astrophysics classes. ... As students grapple with the puzzle, they are forced to learn the subject matter of the course. ... This exercise is designed for 1st year University students with a reasonable high-school background in Maths and Physics. ...
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Ссылки http://www.mso.anu.edu.au/pfrancis/PBL_copies.html -- 8.0 Кб -- 01.10.2012
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12. Additional problems at the transition
A problem, that can arise when moving from Fortran 77 to Fortran 90, is dependent on a usual deviation from the standard, and has to do especially with user programs. ... With many Fortran 77 implementations we wrote PROGRAM TEST REAL X WRITE(*,10) 10 FORMAT('Give X = ',$) READ(*,*) X WRITE(*,*) X END In Fortran 90 we use "non-advancing I/O" instead. ... In some old Fortran dialects the statement TYPE was used to write on a typewriter terminal and PRINT was used to write on the line printer. ...
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Ссылки http://star.arm.ac.uk/f77to90/c14.html -- 5.4 Кб -- 10.02.1996
[ Сохраненная копия ] Ссылки http://crydee.sai.msu.ru/f90/c14.html -- 5.4 Кб -- 10.02.1996
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[ Сохраненная копия ] Ссылки http://crydee.sai.msu.ru/f90/c14.html -- 5.4 Кб -- 10.02.1996
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13. Phil Plait's Bad Astronomy: Misconceptions
... Bad Astronomy . ... Every few months, one of a series of questions comes up on the USENET group sci.astro involving tides, or the rotation of the Moon, or the recession of the Moon from the Earth. ... Why the Moon's rotation period is the same as the length of time it takes to orbit the Earth (same as number 1, but phrased differently). ... But when this happens, the time it takes for the Earth to rotate once will be slowed to exactly the same time it takes for the Moon to go around the Earth once! ...
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Ссылки http://www.badastronomy.com/bad/misc/tides.html -- 26.0 Кб -- 09.04.2016
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14. http://www.ipa.nw.ru/conference/2002/sovet/PS/ZIMOVSCH.PS
... Indeed, in a number of cases, when studying the motion of celestial objects one should take into account both gravity and repulsive force of light pressure. ... For the first time it was V. V. Radziewsky who stated and solved some prob lems in dynamics of particle's of the photogravitational problem. In the pho togravitational three--body problem, formulated by him, in contrast to the clas sical problem, one of primaries or both of them are the sources of light repulsion. ...
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Ссылки http://www.ipa.nw.ru/conference/2002/sovet/PS/ZIMOVSCH.PS -- 25.5 Кб -- 19.08.2002
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15. [NEdit] FAQ: Diagnosing and reporting problems
How do I report problems I've encountered using NEdit ? ... If you have a problem which is not covered in the on-line help, in this FAQ, or in the README file specific to your system, you can report it to discuss@nedit.org (usage questions) or, develop@nedit.org (error reports). ... Below are some suggestions for information you can provide to help in diagnosing your problem. ... As of version 5.2 a summary with build information is present under 'Version' in the Help menu. ...
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Ссылки http://mavr.sao.ru/hq/sts/linux/doc/nedit/faq/sect_reporting.shtml -- 3.7 Кб -- 28.12.2007
[ Сохраненная копия ] Ссылки http://www.sao.ru/hq/sts/linux/doc/nedit/faq/sect_reporting.shtml -- 3.7 Кб -- 11.09.2010
[ Сохраненная копия ] Ссылки http://jet.sao.ru/hq/sts/linux/doc/nedit/faq/sect_reporting.shtml -- 3.7 Кб -- 02.10.2012
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[ Сохраненная копия ] Ссылки http://jet.sao.ru/hq/sts/linux/doc/nedit/faq/sect_reporting.shtml -- 3.7 Кб -- 02.10.2012
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16. Sky problems
Next: CCD data Up: Special problems Previous: Marginal nights . If the program complains that you have negative intensities, this is usually due to misidentifying star observations as sky. ... Another problem with sky occurs when the program cannot find a suitable sky observation to subtract from a star datum. ... Finally, as the sky-modelling algorithm does not try to model twilight, it uses the ``nearest-neighbor'' method to correct star observations made during twilight for sky. ...
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Ссылки http://www.sao.ru/precise/Midas_doc/doc/94NOV/vol2/node310.html -- 3.4 Кб -- 23.02.1996
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17. Tatjana Khruzina
... For the past years I have been working on the problem of synthesis of light curves of close binary systems, consisting of a normal star and a compact object (point object with fixed X-ray luminosity). ... Possible existence of a bright spot on the disk's lateral surface is taken into account. ... The last of then will be published in Gordon and Breach Publishers ( Cherepashchuk A.M., Katysheva N.A., Khruzina T.S., Shugarov S.Yu. ... Cherepashchuk A.M., Katysheva N.A., Khruzina T.S., Shugarov S.Yu. ...
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Ссылки http://uranus.sai.msu.ru/~kts/ -- 4.4 Кб -- 22.09.2000
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18. Lagrangian Points
... With enough velocity, a spacecraft can break loose from the Earth's gravity and enter an orbit around the Sun, like that of a planet. If it then orbits the Sun with the same period as the Earth--one year--it may keep a fixed position relative to Earth. ... If the distance is just right--about 4 times the distance to the Moon or 1/100 the distance to the Sun--the spacecraft, too, will need just one year to go around the Sun, and will keep its position between the Sun and the Earth. ...
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Ссылки http://www.cosmos.ru/mirrors/stern/Education/wlagran.html -- 11.9 Кб -- 24.03.2006
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19. Special Year in Multiscale Mathematical Modeling in Biology and Medicine
The multiscale analysis of heterogeneous structures is actually an important and effective tool of mathematical modeling in physics, technique and biology. ... The special year will extend the existing cooperation between French and Russian researchers in the multiscale analysis and in mathematical modeling in hemodynamics, taking into consideration the mass transport, coagulation, fluid-structure interaction and other aspects. ...
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Ссылки http://www.mccme.ru/lifr/medicine.htm -- 3.1 Кб -- 10.09.2014
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20. http://www.issp.ac.ru/iao/2014/booklet/ia14_booklet_en1_page_B02.pdf
... Great oppositions. ... Proxima Centauri. ... Scientists proved that the problem of preserving the Earth's climate and the annual change of seasons can be solved by a small star, negligible mass, but similar to a main-sequence star, moving in a circular orbit around the Sun. ... Sombrero Galaxy. The Sombrero Galaxy, M104, is known as a holder of one of supermassive black holes. ... Roughly estimate the approximate mass of the supermassive black hole in the center of M104 (answer in solar masses m). ...
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Ссылки http://www.issp.ac.ru/iao/2014/booklet/ia14_booklet_en1_page_B02.pdf -- 257.5 Кб -- 22.10.2014
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