|
Home / News / Tags / magnetic
|
|
Earth's magnetic field is known to influence the behavior of living creatures, from bacteria to plants and animals. Fish (including sharks), whales, dolphins, bats, sea turtles and birds, many animal species are known to detect the magnetic field of the planet. A new research published in the Science journal has... |
5 May 2008
04:29 GMT |
 |
|
The Earth has a magnetosphere that affects the life of most creatures on Earth. Earth's magnetism is very weak, from 0.3 gauss at the Equator to 0.7 gauss at the Poles. Researchers discovered magnetic bacteria living in the ponds and lakes, presenting a chain of magnetic crystals inside their cells. Those locate... |
24 March 2008
16:36 GMT |
|
|
Indeed there is. Warships may seem rather powerful, but this showoff of sheer power would not be very efficient against people that don't give a penny on looks. What the modern warfare needs is invisibility. You might have noticed the trend followed by a series of armies around the world, starting with the devel... |
3 March 2008
03:44 GMT |
|
|
The magnetic properties of the matter have been observed by people even from Antiquity. The words "magnetism" and "magnet" seems to come from the (by then) Greek region of Magnesia (now in western Turkey) or from the city of Magnessa in the same region, around which "magnetic stones" (magnetite deposits) were found, ... |
31 January 2008
06:31 GMT |
|
|
What speeds cosmic rays close to the velocity of light? Huge magnetic cocoons linked to galaxies whose black holes are inactive could solve the puzzle: the way the energy rich cosmic rays reach Earth, when normally they should have long finished their resources.Cosmic rays represent high-speed atomic nuclei, mainly h... |
23 October 2007
05:45 GMT |
|
|
Without a map or GPS, we are completely lost in the middle of nowhere. But many species, such as the mole rat, birds, fish, amphibian, have a magnetic compass. Bats have it too, and a new research shows how these mammals can feel the polarity of a magnetic field, detecting the difference between north and south. This... |
24 September 2007
06:49 GMT |
|
|
Another space enigma has been solved by a team at the University of Arizona: what causes the powerful bursts from "magnetars", the most magnetic objects in space. These odd neutron stars are so superdense that the Sun's mass can be packed into a body which has the size of the Manhattan Island. Still, their magne... |
21 September 2007
07:20 GMT |
|
|
Nowadays computers use frequently several types of memory, from the main system memory called RAM (from random access memory) that has several generations, to video memory inside graphics cards, flash memory chips for external data storage and SSDs - solid state drives. These are the most frequently met memory types ... |
11 August 2007
05:42 GMT |
|
|
An international team of scientists has recently discovered a hidden magnetic "quantum order" that manifests itself over long chains of almost 100 atoms in a material that normally displays a magnetic disorder.This finding could help the development of new materials and devices for super quantum computers, that make... |
27 July 2007
05:13 GMT |
|
|
According to researchers working at a joined project of the University of California and Hitachi Global Storage Technologies, cited by ITPro, most hard disk drive failures are produced by phenomena called "magnetic avalanches" and their better understanding could lead to hard disk drives that are much more stable and... |
19 July 2007
03:00 GMT |
|
|
Magnetic avalanches could wipe clean entire hard disk drives, so a new model of this phenomenon helps explain how and why they appear, but most importantly, how to prevent them in order to create new and more reliable memory storage devices.Two magnets pushed together create an avalanche of magnetic activity, used t... |
18 July 2007
05:47 GMT |
|
|
In the case of many species, individuals have an innate sense of direction, following their way along migration routes that go by thousands of miles and in most of those species, Earth's magnetic field is used for orientation or navigation during long migrations. This is valid for more living creatures: from bee... |
12 July 2007
06:38 GMT |
|
|
Scientists had a rare occasion to study one of the most impressive marine animals, which gave birth to so many legends among sailors throughout history, a large giant squid that washed up to shore on a remote Australian beach, reported Reuters.It was really a fine specimen, but unfortunately the tentacles had been b... |
11 July 2007
05:02 GMT |
|
|
The first pictures of the spatial distribution of a magnetic field penetrating a superconductor were presented by a team of researchers at the U.S. Department of Energy's Ames Laboratory. They show strange two-dimensional equilibrium patterns and intricate models.Soap-foam like structures display on the surface... |
9 July 2007
09:52 GMT |
|
|
For the first time, scientists from the European Space Agency obtained tri-dimensional pictures of a spectacular magnetic "dance" above the Earth, caused by a phenomenon known as "magnetic reconnection."The Cluster mission is a European Space Agency (ESA) unmanned space mission to study the Earth's magnetosphe... |
29 June 2007
09:52 GMT |
|
|
Magnetic recording are data storage applications that use different patterns of magnetization on a magnetically coated surface to store data and represent non-volatile memory. One or more read and write heads are used to access the information.Now, a group of scientists at the Radboud University Nijmegen in the Neth... |
28 June 2007
09:51 GMT |
|
|
Magnetocaloric materials are a new class of materials, designed for magnetic refrigeration, that use the magnetocaloric effect to attain extremely low temperatures (well below 1 kelvin), as well as the ranges used in common refrigerators, depending on the design of the system.The magnetocaloric effect is a magneto-t... |
20 June 2007
15:51 GMT |
|
|
Superconductivity is a phenomenon occurring in certain materials at extremely low temperatures, characterized by exactly zero electrical resistance and the exclusion of the interior magnetic field. They are thought to appear usually below -140 degrees Celsius. Superconductors are used in many applications, like MRI ... |
20 June 2007
02:50 GMT |
|
|
A mystery about the interior of the Sun lasting for centuries has been solved by scientists at National Science Foundation (NSF) and NASA. They now proved that sound waves escape the interior of the sun and form fountains of hot gas that shape and provide fuel for a region of the sun's atmosphere.This thin regi... |
30 May 2007
15:31 GMT |
|
|
Every 11 years, the Sun experiences its own "storm season," with violent explosions in its atmosphere, with an energy equivalent to a billion megatons and travelling towards Earth at about 1 million km per hour (about 0.05% the speed of light), though sometimes much faster. Predicting such events is not easy, but no... |
26 May 2007
08:02 GMT |
|
|
Magnets are materials that produce a magnetic field of their own. Only a few elements, especially iron, cobalt, nickel and neodymium, are ferromagnetic (permanent magnets) at room temperature.Now, a group of scientist has successfully introduced a naturally non-magnetic material to the exclusive club of magnetic ele... |
12 May 2007
06:21 GMT |
|
|
The quantum computer is every IT specialist's hope and every average Joe's dream. It is essentially a computer that makes direct use of distinctively quantum mechanical phenomena for computation, like superposition and entanglement, to perform operations on data. In a classical (or conventional) computer,... |
7 May 2007
08:50 GMT |
|
|
The first three-dimensional images of the sun have been released by NASA, enabling scientists, for the first time, to see structures in the sun's atmosphere in three dimensions thus helping them to track solar storms more accurately.The data transmitted by the twin Solar TErrestrial RElations Observatories, kno... |
24 April 2007
03:22 GMT |
|
|
The findings, which are contrary to previous studies, suggest that even in its earliest stages, the Earth was already well protected from the solar wind, which can strip away a planet's atmosphere and bathe its surface in lethal radiation."The intensity of the ancient magnetic field was very similar to today�... |
5 April 2007
08:18 GMT |
|
|
It is known that the Earth's molten metal core fuels a magnetic field. Now, a team has generated similar self-sustaining fields even when the flow is highly turbulent. The new approach is a closer simulation of the Earth's dynamo than other experiments as the fluid flows freely in a large tank and is not c... |
31 March 2007
04:36 GMT |
|
|
A European Space Agency study has discovered experimental evidence of magnetic reconnection occurring in turbulent plasma fields surrounding the Earth.Plasma turbulences are caused by an irregular behavior of particle flows and magnetic fields within which many small-scale boundaries can form.Our first line of defen... |
29 March 2007
06:46 GMT |
|
|
A small leak will sink a great ship...Enceladus, one of the Saturn's small moons, is slowing down the giant planet's magnetic field so much that the field rotates at a lower pace than the planet, making it nearly impossible to determine Saturn's day length employing methods used for other giant planets... |
23 March 2007
04:57 GMT |
|
|
The chaotic surface of the Sun has amazed astronomers looking at detailed new images from the Japanese space telescope called Hinode ("sunrise"). "The observatory will have as dramatic an impact on our understanding of the Sun as the Hubble Space Telescope has had on our view of the universe beyond," said NASA resear... |
22 March 2007
07:42 GMT |
|
|
Audio-Technica needs no introduction from me nor does it need too much of a hailing presentation from others; professionals simply know that a piece of gear with the AT badge on it is not only worth the money but will also deliver outstanding quality and reliability over the years.Whether we're speaking about th... |
14 March 2007
06:53 GMT |
|
|
Scientists have been puzzled for long by the ability of the marine turtles to return their entire life to the same beach to depose their eggs. These egg-laying sites can be often located far from the feeding areas and the individuals (both females and males, as they mate in the same area where the females lay their e... |
8 March 2007
07:21 GMT |
|
|
|
|
