... Impedance . Electrical impedance, or simply impedance, describes a measure of opposition to a sinusoidal alternating current (AC). Electrical impedance extends the concept of resistance to AC circuits, describing not only the relative amplitudes of the voltage and current, but also the relative phases. ... Resistance is the real part of impedance; a device with a purely resistive impedance exhibits no phase shift between the voltage and current. ...

... What is the configuration of the device driver software? ... If the software you use doesn't adequately tell you what's wrong (or automatically configure it correctly) then you need to investigate how your hardware devices and their drivers are configured. ... Another problem is that when you view configuration messages on the screen, it's sometimes not clear whether the reported configuration is that of the device driver, the device hardware, or both. ...

... SUN MOON MERCURY VENUS MARS, JUPITER SATURN . ... Mars . ... Previously understood that magnetic fields were directly related to rotation, so when I read that Mars, like Venus, didn't have one, my understanding crumbled. What exactly causes magnetic fields in planets? ... RELATED TOPICS: MAGNETIC FIELD . Planetary magnetic fields are definitely related to rotation, but directly not so much. ... Get instant access to subscriber content on Astronomy.com! ...

. Other Relevant Links . Number counts have been illustrated earlier in the talk. QSO Clustering and Large-Scale Structure , Scott Croom et al . QSO Evolution and the Luminosity Function , B.J. Boyle et al . | Front page | . | << - Contamination | QSO close pairs - >> | . Robert J. Smith, ">rsmith@mso.anu.edu.au Last modified: Fri Sep 24 11:39:02 EST 1999 .

MINUTES of the RadioAstron Teleconference on May 30, 2006 V. Slysh chaired the teleconference. The agenda of the teleconference and the list of participants are attached to the Minutes. ... N.Kardashev informed the participants on the status of interactions with NASA. ... Canada NRAO, USA ASC, Russia ASC, Russia NRAO, USA NRAO, USA MPIfR/ASC MPIfR, Germany NRAO, USA ASC, Russia NRAO, USA ISAS, Japan ASC, Russia JPL, USA NRAO, USA ASC, Russia ASC, Russia ESA, the Netherlands ...

... commands . ... data_spectrum <name> : data in "spectrum" format . ... Repeat command to add additional mask regions. sigma is the s.d. to apply to the data within the region to be masked. ... Repeat command to add additiona continuum regions. ... cont_reg_clear : Clear current continuum regions . ... The observed spectrum is then multipled by this filter to obtain a new spectrum for use by SFIT. cont_sigma : Computes standard deviation of data in continuum regions and applies it to current data . ...

... About ATMoB . ... The Observing Committee is starting an Observing Awards Program to promote observing among the membership of the Amateur Telescope Makers of Boston. ... Participant must be a current member of the Amateur Telescope Makers of Boston . ... To qualify for your Observing Award Certificate, turn in your worksheet and drawings to an ATMoB Observing Committee member or observing@atmob.org . ... This Excel sheet has useful macros. ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

... Corporate Partners Rock Our Cosmos! Current Partners . ... In addition to Sky & Telescope and SkyandTelescope.com, the comany publishes Night Sky, a bimonthly magazine for beginning astronomers, an annual magazine called SkyWatch, an annual magazine called Beautiful Universe, as well as books, star atlases, posters, prints, globes, and other fine astronomy products. ... We thank our Corporate Affiliates for their annual investment in partnering with the ASP to improve astronomy education. ...

... General information . ... Eurasian Astronomical Society . Main Optional Sections (Workshops) . ... Main Deadlines . ... The conference "Astronomy - 2005: Current State and Prospects" is to be held in Moscow, Russia, on June 1-6, 2005, in the frame of the Scientific Program of the 8th General Meeting of the Eurasian Astronomical Society. The main goal of the Symposium is to analyze the current state and possible prospect of astronomical science and work out a strategy of its development. ...

... Размер: 2;1 . Цвет: Голубой . ... Рубашки / Блузки . ... Артикул: D122_15KR Цвет: белый Состав: 50% вискоза, 50% полиэстер Описание: элегантная блуза без рукава. ... Цвет: черный . ... Черный глянец металла облагораживает и сдерживает невероятный шик образа, достойного лучших интерьеров.&lt;div&gt;&lt;br&gt;&lt;/div&gt;&lt;div&gt;Цоколь: E14.&lt;/div&gt;&lt;div&gt;Мощность: 8х40.&lt;/div&gt; . ... Ящик для 20 ключей Office-Force с кодовым замком, цвет: черный - Office-Force - Office-Force . ...

The Geodetic Reference Antenna in Space ( GRASP ): A Mission to Enhance the Terrestrial Reference Frame Yoaz Bar-Sever1, R. Steven Nerem2, and the GRASP Team 2 Jet Propulsion Laboratory University of Colorado, Boulder 1 Terrestrial Reference Frame ( TRF ) and GRASP · TRF is fundamental to all areas of geophysics TRF · TRF are currently determined by 4 space-ground geodetic techniques: - GPS/ GNSS - ... YEB, September 2012 10 ...

... Sun images . ... Sun flares . ... Active areas . September : 2009 . ... No sunspots and sunspot groups can be currently observed on the Sun's surface . The following H-alpha plages without spots can be currently observed on the Sun's surface . ... Coordinates . ... Coordinates and other characteristics of active regions are issued for September 09, 2009 00:31 UT . Last updated: September 10, 2009 00:00 UT . ... 7(499)132-65-96, Fax: +7(499)132-65-97 . ...

... We present several applications of the AIPS++ environment as applied to the development of the Green Bank Telescope as well as current astrophysical problems. ... In particular, the Green Bank Telescope (GBT) project requires AIPS++ as an analysis environment. To accommodate and facilitate the GBT development, several sets of tools have been fashioned within AIPS++ at several points along the data path, from general calibration routines and data quality assessment to analysis and modeling. ...

... In 1930, Trumpler noticed that linear diameters (LD) of open clusters increase with distance (D) from the Sun. ... Since that time, the interstellar absorption has become one of the best studied factor in astrophysics, and we may hope that current OCL distance scales are free from this LD-D correlation. To verify if this is the case we have chosen several modern OCL distance scales and test them with the same clusters and the same angular diameters that Trumpler had used back in 1930. ...

... Bad Astronomy . ... Mad Science . ... Where is the Hubble space telescope currently? (near what planet?) You may be surprised by this, but the Hubble Space Telescope (HST) is orbiting the Earth! ... At that height, HST is above almost all of the Earth's atmosphere, which gives it a clearer view of the sky than telescopes on the Earth. ... You can find pictures and info from STIS here , which is a page brought to you by the Space Telescope Science Institute . ... 2008 Phil Plait. ...

Astronomy Discussion Forums . Forums: . ... Discussion Forums . ... I Hate Most Of Current Psychology As Now Practiced . Forum List | ... Post Message | ... In my experience, current psychology is all . ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

MOSCOW CENTER FOR CONTINUOUS MATHEMATICAL EDUCATION . INDEPENDENT UNIVERSITY OF MOSCOW . ... A MATHEMATICS PROGRAM IN ENGLISH . FOR UNDERGRADUATES AND GRADUATE STUDENTS . ... Students | IUM Library | ... About the IUM . ... Program features . ... Application: . ... Application procedure . Application form . ... Program: . ... Living in Moscow . ... Current semester info: . ... Alumni: . List of Alumni . Home Universities . ... University of California, Berkeley . ...

ON-LINE STATIC EIT RECONSTRUCTION SERVER . ... Static image reconstruction from the data measured in vivo is still intriguing problem in EIT. ... dipole (adjacent) current injection and voltage measurements on pairs of adjacent electrodes (like in Sheffield systems) . ... You can view examples of the text files for polar , dipole and trigonometric injection, use them for testing the server and find more details on HOW TO PREPARE INPUT FILE FOR THE ON-LINE EIT RECONSTRUCTION SERVER page. ...

Astronomy Picture of the Day . ... Flowing Barchan Sand Dunes on Mars . ... The View Near a Black Hole . ... Studies of the bright light emitted by the swirling gas frequently indicate not only that a black hole is present, but also likely attributes. ... Discovered by accident, this manuscript page provides graphical insight to astronomy in medieval times, before the Renaissance and the influence of Nicolaus Copernicus, Tycho de Brahe, Johannes Kepler, and Galileo. ... Castle and Full Moon . ...