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• Solar Collection and Energy Transport.
• U of O High Energy Physics Seminars

. Quantum clock (atomic clock) - the time measuring device containing quartz generator, controlled by the quantum frequency standard . Atoms play a role of pendulum. The frequency of atoms radiation while the atoms passing from one energy level to another regulates the quantum clock. This frequency is so stable (error 10^-11 - 10^-13) that quantum clocks allow to calculate the time more exactly, then astronomic methods. Back .

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• kvantstandarte
• watchese

Term mixture regarding solar chemical composition refers to relative abundances of heavy elements. Abundances of hydrogen and helium cannot be determined reliably from observations, therefore concentration of these elements are not taken from observational data. ... Table contains only elements which are abundant enough to be included into opacity and equation of state computations. ... First "low-Z abundances" to be published were AGS05. ... 5.5 . ... 6.22 AG89 : Anders E., Grevesse N. 1989. ...

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• Index of

. SMC Bar average . R V = 2.74 0.13 . N(HI)/A(V) = (13.18 1.02)X10 21 HI atoms/mag . ASCII file of extinction curve . LMC2 Supershell average . R V = 2.76 0.09 . N(HI)/A(V) = (6.97 0.67)X10 21 HI atoms/mag . ASCII file of extinction curve . LMC Average average . R V = 3.41 0.06 . N(HI)/A(V) = (3.25 0.28)X10 21 HI atoms/mag . ASCII file of extinction curve . Copyright 2003 Karl D. Gordon All Rights Reserved

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• The GHRS and the Heliosphere
• Spectroscopy of Planetary Nebulae
• Python: module symbol

The ultimate force in the universe: Some thoughts about gravity. ... Gravity through the ages Aristotle: Earth, water, fire, air. Earth and water fall `down' to the center of the cosmos (geocentric or earth centered universe). The more earth or water in the object, the faster it is attracted to the center. ... Determines the fate of the universe (expand forever, or contract back in a `"big crunch"). ... Determines the fate of stars when they die (white dwarfs, neutron star, or black hole). ...

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Blackholes Forum Message . ... Post . ... Rest Mass . ... Post Message | ... When the atom was first measured it was assumed to be composed of rest mass. ... The mass due to motion with respect to an observer approaches 0 as the velocity approaches 0. ... If a photon has a zero rest mass and therefore is composed entirely of momentum mass. ... www.astronomy.net . ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

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• I Believe You Are Thinking About These The Wrong Way. - an Astronomy Net

The potential of plasma By Lisa Tidwell Astronaut Franklin Chang-Diaz, Director of the Advanced Space Propulsion Laboratory, works on the VASIMR engine. jsc2003e49523 Photo by James Blair Scott Winter, from Safety, Reliability & Quality Assurance, makes adjustments on the VASIMR. jsc2003e49525 Photo by James Blair A T A GLANCE HOW THE V ASIMR ENGINE WORKS The VASIMR engine works through a set of three linked magnetic cells. ... This plasma is what drives the rocket engine. ...

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Оптический стандарт частоты на холодных атомах стронция . ... Optical Frequency Standard on Cold Strontium Atoms . ... We demonstrate first-stage and second-stage laser cooling of strontium-88 atoms captured in a magneto-optical trap. ... About 3 10 6 atoms were received after two cooling stages, at the temperature of about 2.5 K. The next step we describe is trapping cold atoms in an optical lattice. ... cold atoms, laser cooling, optical frequency reference, magneto-optical trap, optical lattice. ...

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• Keywords_99
• Keywords_179

... LP-Moon.pdf - 26KB . ... A. A. Berezhnoy1,2, N. Hasebe1, M. Kobayashi1, G. Michael3 and N. Yamashita1 1Advanced Research Institute for Science and Engineering, Waseda University, Tokyo, Japan 2Sternberg Astronomical Institute, Moscow, Russia 3German Aerospace Center, Institute for planetary research, Berlin, Germany . Brown University - Vernadsky Institute Microsymposium 40, 2004, Moscow, Russia . ... 3Now at: Sternberg Astronomical Institute, Moscow University, Moscow, Russia . ...

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• Бережной А.А.

Astronomical Data Center . ... You can access the files described here in three ways: . ... Use CDS' VizieR Service at ADC to explore the data files. ... Get the data files via anonymous FTP. ... 1981) -------------------------------------------------------------------------------- Byte-per-byte Description of file : table1a Byte-per-byte Description of file : table1b -------------------------------------------------------------------------------- Bytes Format Units Label Explanations ...

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... Информация Руководство и преподаватели Мартыненко Алексей Петрович . ... Публикации . ... Martynenko A.P. , Faustov R.N., Martynenko G.A., Sorokin V.V. Hyperfine structure of P states in muonic deuterium // Physical Review A. 2015. ... 2015. ... 2010. ... Мартыненко А.П. , Мартыненко Г.А., Сорокин В.В., Фаустов Р.Н. Сверхтонкая структура S-состояний мюонного дейтерия // Вестник Самарского государственного технического университета. ... Мартыненко А.П. Производство адронов при e+e? - аннигиляции. ...

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Astronotes Armagh Planetarium's Stellar Blog! ... Stars . ... Space Flight . ... Some 13.7 billion years ago, a mere millionth of a second after the Big Bang, the first hydrogen and helium nuclei condensed out of a hot, dense soup of quarks and gluons. ... In the very last few kilometres some of the light was scattered by a myriad of water droplets (containing hydrogen nuclei which had existed almost since the Big Bang) slowly descending through the air following a rainshower. ...

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• Why is this nebula so shocking pink? | Astronotes
• All about Earth's Atmosphere | Astronotes

... Files . ... Go to the source code of this file. typedef dust_drudeprofs * . ... double . ... bndust_PAHatoHc (double a) . ... dust_CPAHDrudes (double a, dust_ionisation state, dust_pahenhancements *e, dust_pahprofiles res) . ... Returns the number of carbon atoms given a radius a (in metres). ... References bndust_PAHatoHc() , dust_pahenhancements::E62 , dust_pahenhancements::E77 , dust_pahenhancements::E86 , dust_drudeprofs::gamma , dust_drudeprofs::sigma , and dust_drudeprofs::wavel . ...

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• OptInt PmWiki : PmWiki / Web Feeds
• DUST: pahprops.c File Reference
• DUST: silprops.c File Reference

GRAVITATIONAL REDSHIFT EXPERIMENT WITH THE SPACE RADIO TELESCOPE RADIOASTRON Dmitry Litvinov1, Norbert Bartel 2, Alexander Biriukov3, Vladimir Kauts3, Victor Kulagin1, Valentin Rudenko1 1 Sternberg Astronomical Institute, Russia 2 3 York University, Canada Astro Space Center, Russia Journees 2014 , Saint-Petersburg , 22-24 September 2014 GRAVITATIONAL REDSHIFT Einstein, 1911: Pound, Rebka, 1960: laboratory test Journees 2014 , ... 2014, Astron. ...

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... Un trГЕs court instant, cette distorsion de l'espace a ГїtГї enregistrГїe aux Г%tats-Unis par les deux bras perpendiculaires d'un interfГїromГЕtre laser, dont l'un s'est allongГї et l'autre raccourci. De peu ; d'une longueur un milliard de fois plus petite que le diamГЕtre d'un atome. ... Les raisons en sont Гїvidentes. ... Vous trouverez dans les pages qui suivent le rГїcit complet de la dГїcouverte et les promesses de cette nouvelle astronomie gravitationnelle. ...

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... Under certain conditions, like those in the nucleus of a QSO, all atoms can be made to emit light at particular wavelengths. ... If that source is approaching the observer, the wave is squashed up onto itself making the wavelength shorter. ... This is redshift. ... You can see how the section of the QSO spectrum which we observe changes with redshift. ... We then see how far we had to slide the observed spectrum along the scale to make it match and that is the objects redshift. ... The 2QZ team . ...

38. Phil Plait's Bad Astronomy: Mad Science

39. CAL_getEpicMOSRedistribution

40. Actor Prolog. Programming language definition.