... A dynamo (or electric generator) is a device converting . ... Faraday discovered that by moving a magnet next to a closed electric circuit, or changing the magnetic field passing through it, an electric current could be "induced" to flow in it. ... Faraday's disk dynamo Faraday showed that another way of inducing the current was to move the electric conductor while the magnetic source stood still. ... Faraday's disk dynamo needs a magnetic field in order to produce an electric current. ...

... 12a. Inner Belt . ... The inner radiation belt, discovered by Explorers 1 and 3, owes its existence to the extraordinary stability of trapped orbits near the Earth. ... If these are electrically charged, e.g. electrons or ions, they will often end up trapped by the Earth's magnetic field. ... The energetic protons which then materialize are grabbed by the Earth's magnetic field, often on trapped orbits which do not return to the atmosphere, in which the proton can stay trapped for a rather long time...

Supernova 2009js in NGC 918 . This page is devoted to information on Supernova 2009js in NGC 918 . Basic information on this SN, including the last reported brightness, on this Supernova can be found on the main page . Information on the original web pages for many of these images can be found on the updates and links web pages. Discovered independently by Lick Observatory Supernova Search (USA) and Koichi Itagaki (Japan). ... 2009/10/11.44 . 17.2 . ... Joseph Brimacombe . ...

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... Massive stars, having 10-150 masses of the Sun, with metallicities Z tens to hundreds times less than that of the Sun (Zo), are the main regulators of the galaxy formation and evolution processes in the early Universe. ... In this galaxy, using the 6 m BTA telescope, a new massive blue variable star with high luminosity (>=10 5 Sun's luminocities in visible light) was found. As far as its properties are concerned, this star falls into an LBV (Luminous Blue Variable) class of stars. ...

... Stellar Evolution is driven entirely by the never ending battle between Pressure and Gravity . As imbalances are reached, the star is driven to find a new Energy source. ... Pressure and gravitational forces are equal, the star is stable and its core is sufficiently hot to fuse Hydrogen into Helium More about main sequence stars . ... The luminosity generated by the core fusion of Helium into Carbon is far greater than the shell luminosity associated with the fusion of Hydrogen into Helium. ...

Image credit: Michael Nolan, Arecibo Observatory. These radar images of near-Earth asteroid 2001 SN263 were obtained on 2008 Feb 12 and 13. ... Image from Feb 12 . ... First near-Earth triple asteroid discovered by Arecibo Observatory . ... was discovered this week by astronomers at the sensitive radar telescope at Cornell University?s Arecibo Observatory in Puerto Rico. ... For example, Arecibo has discovered more than half of the near-Earth binary asteroid systems discovered since 1999. ...

... Apache HTTP Server Version 2.4 . ... This Multi-Processing Module (MPM) implements a non-threaded, pre-forking web server. ... Apache httpd always tries to maintain several spare or idle server processes, which stand ready to serve incoming requests. ... Maximum number of idle child server processes . ... The MaxSpareServers directive sets the desired maximum number of idle child server processes. ... The MinSpareServers directive sets the desired minimum number of idle child server processes. ...

Discover the cosmos! ... 2013 November 5 . Kepler-78b: Earth-Sized Planet Discovered . ... Explanation: Even though Kepler-78b is only slightly larger than the Earth, it should not exist. ... Illustrated above in comparison with the Earth, Kepler-78b was discovered by eclipse with the Earth-trailing Kepler spacecraft and further monitored for subtle wobbles by the HARPS - North , a spectrograph attached to the 3.6-meter Telescopio Nazionale Galileo in the Canary Islands . ... About APOD | ...

Total number of pointings to be observed in survey : 2670 Number of unique pointings observed so far: 2350 Number of unique ptgs on processed tapes : 0 Number of pointings on dud tapes : 88 Number of processed pointings on dud tapes : 0 Number of non- survey pointings found : 29211 Number of short or test survey pointings ...

... Credit Copyright: David A. Aguilar ( CfA ) Explanation: Even though Kepler-78b is only slightly larger than the Earth, it should not exist. ... Illustrated above in comparison with the Earth, Kepler-78b was discovered by eclipse with the Earth-orbiting Kepler spacecraft and further monitored for subtle wobbles by the HARPS - North , a spectrograph attached to the 3.6-meter Telescopio Nazionale Galileo in the Canary Islands . ... Publications with keywords: extrasolar planet . ...

... Apache HTTP Server Version 2.2 . ... This Multi-Processing Module (MPM) implements a non-threaded, pre-forking web server that handles requests in a manner similar to Apache 1.3. ... Apache always tries to maintain several spare or idle server processes, which stand ready to serve incoming requests. ... Maximum number of idle child server processes . ... Minimum number of idle child server processes . ... The MinSpareServers directive sets the desired minimum number of idle child server processes. ...

... Scientists from G. I. Budker Institute of Nuclear Physics- Syberian Branch of the Russian Academy of Science, Novosibirsk State University, Novosibirsk State Technical University, Samara State Aerospace University (SSAU) and Image Processing Systems Institute (IPSI) of the Russian Academy of Science, became the first people in the world obtained terahertz non-diffractive twisted Bessel beams and used them for the first time the formation of surface electromagnetic waves on the metal surface. ...

... The French-Russian Poncelet Laboratory organizes the conference on "Random Processes, Conformal Field Theory and Integrable Systems", September 19-23, 2011, to take place in the Independent University of Moscow. ... In the last decades, the understanding of these processes has greatly benefited from the use of conformal field theory (CFT) and integrable systems (IS) which have been widely studied in the community of theoretical and mathematical physicists. ...

an error occurred while processing this directive] . NASA] В декабрьском номере журнала Discover в разделе новостей из жизни роботов опубликовано сообщение о роботе-"лягушке", который так и называется frogbot (frog - лягушка). Передвигается робот скачками как лягушка, поэтому он и получил такое название. ... В статье он назван "роботом месяца". ... То есть по своим характеристикам данный робот вполне подходит для исследования далеких планет, комет и астероидов. ... Александр Бардаш, 2000 ...

This module provides for the customization of HTTP response headers. ... This module provides a directive to control the sending of HTTP headers. ... Header . ... Syntax: Header set|append|add header value . ... Module: mod_headers . This directive can replace, merge or remove HTTP response headers during 1xx and 2xx series replies. ... set . The response header is set, replacing any previous header with this name . ... The response header is appended to any existing header of the same name. ...

... Release Note for patch to SAS 6.5.0 =================================== Carlos Gabriel Eduardo Ojero XMM-Newton SOC A small patch to change the way the EMOSn_REDIST CCFs are used, has to be issued. ... This goes together with a set of calibration files. ... A large number of SAS users synchronize their calibration repositories to get automatically new released calibration files, but have not updated to SAS 6.5.0., which causes a problem. ...

[an error occurred while processing this directive] . Main Page . Conference Reports . Bibliography . Contacts . N.V. Pushkov . 10/04/2016 02:11 MSK . webmaster@izmiran.ru . Chairman of the confrence : . Ruzhin Yurii Y. Organization committee : . Karpachev Alexander T. Ol'shanskaya Ekaterina V. The address of the confrence : . IZMIRAN 142190, Troitsk, Moscow region, Russia . [an error occurred while processing this directive]

Most of these images were obtained by Mike Bessell, Michelle Buxton, Hwankyung Sung, Ralph Sutherland and Bob Watson at SSO using a 2Kx2K Site CCD behind a Nikon or Hasselblad lens or directly on the 1m telescope. A few images are from the Hubble Space Telescope. Some of the M42 images were obtained with the KPNO 1m and ESO NTT telescope. One image is a mosaic of IRAS images. ... Details of the CCD imaging program at MSSSO. ... antenna.jpg (53KB) . ... ngc6744.jpg (59KB) . ...

Next: Observational Zoo of Binaries Up: No Title Previous: Contents . In the early 1980s, our understanding of binary star evolution љ based on the pioneer work by Paczynski (1971)[ 150 ], Tutukov and Yungelson (1973)[ 195 ], van den Heuvel and Heise (1972)[ 201 ], allowed us to construct a general evolutionary scenario љ which successfully explained the genesis of well-studied normal stars and offered potential explanation for new X-ray sources discovered in space experiments. ...