... Auroral Currents . ... 25b. Io Dynamo . ... Aurora from Space . ... The giant planet Jupiter has four large moons, discovered by Galileo and visible through good binoculars. ... A dynamo is created in a magnetic field by an electric circuit, part of which is moving relative to the rest (additional conditions must also be met). ... Furthermore, the plasma between them conducts electricity very well along its magnetic field lines, which act as if they were wires connecting Io and the planet (drawing)....

Подписка на рассылку обзоров astro-ph на Subscribe.Ru . ... Предыдущий выпуск (N335) . ... Обсудить на форуме Scientific.RU . ... Подписка на рассылку обзоров на Subscribe.Ru . Обзоры препринтов astro-ph . ... Собственно обзоры препринтов. ... Ранее обзоры также были на Астронете и на Scientific.Ru . ... АНКи доступны на Астронете , а с 2006 по 2008 г. также на сайте Элементы.Ру . ... Ранее они также размещались на сайте Астронет и в архиве моих обозрений (кодировка KOI8) на сайте Scientific.Ru . ...

... 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! ...

Astronomy Picture of the Day . ... In this just-released nighttime picture of Jupiter's moon Io, the red spots clearly show Io's current volcanically active regions. ... The Russian space station Mir was photographed last month high above New Zealand. Before returning with record-breaking astronaut Shannon Lucid, the space shuttle Atlantis crew took this breathtaking view from the Space Shuttle Atlantis. ... Jupiter's Auroras . ... Jupiter's auroras are linked to its volcanic moon Io. ...

... Now and then it experiences a magnetic storm , a disturbance of the magnetic field observable all around the globe, lasting a few days and adding appreciably to the Earth's trapped plasma. The storm is accompanied by large bright auroral displays, often extending well beyond the auroral zone, a rare spectacle for those not used to it. ... After analyzing them with a network of four stations, he concluded that they came from large electric currents flowing along the auroral arcs. ...

. Latest HI Rez Visible Satellite Image . IR Enhanced Image of the PNW . (not always available - sorry) . 500 MB surface and the water vapor distribution: . Surface Pressures: . Extreme precipitation in 1995 and 1996 . Temperatures: Jan-Feb , Mar-Apr , May-Jun , July-August , Sept-Oct, Nov-Dec . Precipitation: Jan-Feb , Mar-Apr , May-Jun, July-Aug , Sept-Oct, Nov-Dec . Annual Precipitation Trends . The Electronic Universe Project e-mail: nuts@moo.uoregon.edu

... First briefly outline two important models for pulsar electrodynamics: Vacuum and Magnetospheric models. Two models, two electric fields: inductive and potential. Screening of the induced E and produced co-rotation E by the screening current density. ... These are not the screening current density we needed. ... Force-free condition: Co-rotation E: GJ charge density: Two Electric Fields EI from the Vacuum model is inductive in nature, E from the magnetospheric model is potential and inductive. ...

... 2002 June 16 . Jupiter's Rings Revealed . ... Galileo Project , JPL , NASA . ... Jupiter's rings were discovered in 1979 by the passing Voyager 1 spacecraft , but their origin was a mystery. Data from the Galileo spacecraft currently orbiting Jupiter later confirmed that these rings were created by meteoroid impacts on small nearby moons . ... Small dust particles high in Jupiter's atmosphere , as well as the dust particles that compose the rings , can be seen by reflected sunlight . ...

.

Next: Modes of Operation Up: CCD Scientific Performance Previous: Field of View . Thermal excitation of charge carriers from the valence to the conduction band creates a dark current signal which may vary with position in the array, and also has temporal shot noise variation. ... In a device devoid of localized defects which give rise to individual dark current spikes , most dark current arises from electrons generated at interface states at the surface. ...

THE RELATIVE MONTHLY MEAN SUNSPOT NUMBER ON AUGUST 2014 HAS MADE Waug.= 74.7, THAT GIVES FOR 60 MONTHS (2014, FEBUARY) DEVELOPMENT CURRENT 24 CYCLES OF SOLAR ACTIVITY THE SMOOTHED MONTHLY MEAN SUNSPOT NUMBER W*feb. ... Weekly Bulletin on Solar and Geomagnetic Activity Highlights on 25 - 31.08.2014, Forecast on 01 - 08.09.2014, Carrington Rotations 2154 (21,46.08.2014) SUNSPOT-FORMING ACTIVITY OF THE SUN WAS AT THE AVERAGE LEVEL. ... FOR THE PERIOD SEVEN EJECTIONS OF THE SOLAR FILAMENT. ...

. You can define a file or directory by its location in relation to your current directory . The pathname is given as / (slash) separated list of the directories on the route to the file (or directory) from your current directory. A .. (dot dot) is used to represent the directory immediately above the current directory. In all shells except the Bourne shell, the ~ (tilde) character can be used as shorthand for the full pathname to your home directory. Examples . Did You Know? .

Next: Future plans Up: Electronic database Previous: Electronic database . The JPDOC gives access to references to the papers, data files and links to the internet resources related to measurements and calculations of the optical constants in the wavelength interval from X-rays to the radio domain. ... The database also provides links to internet collections of optical data files and personal WWW pages with relevant software and includes some other useful information. ...

. Figure 2 The relative quantum efficiency of the HgCdTe detector in the wavelength range near the long wavelength cutoff. The QE drops rapidly over a range of 0.1 m m from its maximum to near zero. The cutoff for this device is 1.73 m m.

... Share your current Research with us . ... От: "Journal of Geology Geosciences" . ... Тема: Share your current Research with us . ... Journal of Geology Geosciences publishes original Research/Review/Mini-review/Commentary/Opinion articles, Short communication, Case Reports etc, which covers the topics related to Earth Sciences, Climatic Change, Disaster Management, Disaster Preparedness Mineralogy, Geodesy, GIS, Remote Sensing, Anthropology, Geography of the Earth, Primatology, Planetary Sciences...

Current scientific project and their status . General description of our projects. The scientific problematics. The goals of the projects. Galaxy formation and evolution in cosmic voids . RFBR project 14-02-00520) . 19 December 2014 . Study of galaxies in nearby voids: cosmological perspective . RFBR project 11-02-00261) . ... RFBR project 06-02-16617) . 15 January 2008 . One of the important Laboratory directions is creation new BCG samples. ...

... 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. ...

To: File From: Jon Hagen Date: July 5, 2002 Subject: Calculating static torque of a Kollmorgen motor from the dc currents in the three phases Summary: The torque constant for the B606A "brushless dc" motor is specified as kT = 1.651 ft lbs/ RMS Amp. ... T at 20 deg = 46.03 x sin(20 deg) = 15.74 ft lbs/motor Sum of Torques at 20 deg = 8 x av torque/motor = 126 ft lbs The I monitor port gives an approximation to the desired rms of the current. ... 13.3(Vmonitor).73 for Vmonitor <4 |Torque in ft. lbs| ...

... What's New? Bad Astronomy . ... News . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... Brains on Vacation Archive . Mary, Mary, Where Ya Goin' To? ... Have you ever looked at the clouds, and seen faces in them? ... We all know it's a coincidence, right? ... Jesus is a favorite, obviously, and has been seen in a giant cosmic cloud of dust and gas (right) and various other out-of-the-way places. ... 2008 Phil Plait. ... Check out my book "Bad Astronomy" . ...

... Science User Portal . ... ESO, the European Southern Observatory . ... Travel and Contacts . ... Travel to E-ELT Armazones . ... A laser beam launched from ESOтАЩs VLT crosses the majestic southern sky and creates an artificial star at 90 km altitude in the high Earth€‡s mesosphere. The current Laser Guide Star (LGS) is part of the VLT€‡s Adaptive Optics system and it is used as reference to correct images from the blurring effect of the atmosphere. ... Laser Guide Star , Very Large Telescope . ...