Magnetic field

Ballistics (11)
Cryogenics (3)
Crystallography (15)
Infrared (134)
Kinematics (1)
Magnetic field (174)
Physical mechanics (48)
Physicist (288)
Physics (457)
Thermodynamics (6)
Ultraviolet (53)

Synopsis: Physics & astronomy: Physics: Magnetic field:

birds see magnetic fields as patterns of spots. For more articles worth reading, visit The Browser.

The magnetic field of our own sun, inflated by the solar wind into a bubble called the heliosphere, #substantially protects us from these things.

A strong magnetic field just outside the solar system could press against the heliosphere and interact with it in unknown ways.

we have discovered a strong magnetic field just outside the solar system, #explains lead author Merav Opher, a NASA Heliophysics Guest Investigator from George Mason University.

This magnetic field holds the interstellar cloud together and solves the longstanding puzzle of how it can exist at all.#

well-organized magnetic field sitting right on our doorstep.##emphasis mine The IBEX data fit in nicely with recent results from Voyager.

suggesting that the magnetic field behind it must be equally vast. Source) What Other Energies Await?

It will use a donut-shaped magnetic field to contain gases that will reach temperatures comparable to those at the core of the sun, in excess of 150 million degrees C (270 million F),

As the particles slam into Earth's magnetic field they bump into atoms and molecules of oxygen nitrogen and other elements.

</p><p>Strange stripelike features in Earth's magnetic field are caused by the planet's spin

<a href=http://www. livescience. com/44583-earth-magnetic-field-zebra-stripes-source. html target=blank>'Zebra Stripes'in Earth's Magnetic field Have Surprising Source

magnetic field scientists say. By comparing ground-based studies and in-space observations of solar system's mysterious energy ribbon which was discovered first by NASA's Interstellar Boundary Explorer (IBEX) in 2009 scientists are learning more details about the conditions

The ribbon is roughly perpendicular to the interstellar magnetic field while cosmic rays stream on average along the interstellar magnetic field.

The particles themselves are created from interactions between the solar wind and interstellar matter. In the longer term Schwadron said work like this will help scientists better understand more about the boundary between our solar system and interstellar space.

Voyager 1's measurements of the magnetic field from the edge of interstellar space show a starkly different direction of the magnetic field inferred in the IBEX ribbon Schwadron said.

It seems like we now have good independent confirmation that the IBEX ribbon is ordered by the interstellar magnetic field

The few studies examining this issue showing little consensus. An October paper co-authored by Schwadron in Astrophysical Journal Letters argued that Voyager 1 could be measuring interstellar plasma coming in through magnetic field lines

What is really missing here is our understanding of the physics Schwadron said adding that reconnection between magnetic field lines could be an example of something that changes the conditions of the boundary region.

Cows Toot Out Most Methane Magnetic field is weakening: Data from Swarm an ESA satellite array indicates Earth's magnetic field is weakening.

Researchers believe these are the beginning signs of the flipping of the magnetic poles yet it is weakening faster than expected.

Earth's Magnetic field Is Weakening 10 Times Faster Now Why seahorses growl: Warning growls are for more than the likes of dogs and bears.

When pooping dogs prefer to align their bodies along the north-south axis of Earth's magnetic field.

Changing the magnetic field may disturb their magnetic orientation, he says, leading to less precision in dance communication.

COMCATTLE seem to align with magnetic field lines, but researchers are in disagreement over the finding. A follow-up study by Burda and his colleagues showed no such alignment near electric power lines,

these atoms are unaffected by the Sun's magnetic field. Mccomas says that it takes about 30 years for particles to cross the bubble wall at the heliosphere s edge

and will, respectively, monitor Earth s magnetic field; global wind profiles; and clouds, aerosols and radiation.

similar to the magnetic field of a bar magnet. If that is so, pear-shaped nuclei should have the strongest electric dipoles,

a constellation of satellites that will study Earth s magnetic field for four years. go. nature. com/rxaaur24-27 november Science for global sustainable development is the theme of the sixth World Science Forum,

The researchers hope that by isolating the antiatoms from the strong magnetic fields used to create

If the world is warming up do a change in magnetic field of the Earth then its not your fault

and this changing world is out of human control or influence per Earths changing magnetic field.

but is insignificant to the effects of a Earth changing magnetic field. All those media frenzy about human induce global warming.

Where's the support for your claim about the magnetic field influencing global warming Starz? Where's the evidence?

Frosttty If you read two article you will find the cycles of the sun effect global warming with the alignment of the planetsand the cycles of Earths polar flip reduce magnetic field allowing more solar radiation to create cloud cover warms the planet. http://www

and the cycles of Earths polar flip reduce magnetic field allowing more solar radiation to create cloud cover warms the planet.

During this time the Earth's magnetic field will drop in strength and at times be nothing. The Earth can also have many multiple poplars north and south around the Earth.

Currently the magnetic field of the Earth has been reducing for the last 300 years. The scientific vote is still out

If the radiation belts in the Earth's magnetosphere were really that deadly because we have been shielded improperly this whole time we probably would have noticed by now...

if it was more of our satellites would have been raped on their way out of our magnetosphere.

The earth's magnetic field impacts climate: Danish studycopenhagen (AFP)--The earth's climate has been affected significantly by the planet's magnetic field according to a Danish study published Monday that could challenge the notion that human emissions are responsible for global warming.

Our results show a strong correlation between the strength of the earth's magnetic field and the amount of precipitation in the tropics one of the two Danish geophysicists behind the study Mads Faurschou Knudsen of the geology department at Aarhus University in western Denmark told the Videnskab journal.

He and his colleague Peter Riisager of the Geological Survey of Denmark and Greenland (GEUS) compared a reconstruction of the prehistoric magnetic field 5000 years ago based on data drawn from stalagmites

and stalactites found in China and Oman The results of the study which has also been published in US scientific journal Geology lend support to a controversial theory published a decade ago by Danish astrophysicist Henrik Svensmark who claimed the climate was influenced highly by galactic cosmic ray (GCR

Svensmark's theory which pitted him against today's mainstream theorists who claim carbon dioxide (CO2) is responsible for global warming involved a link between the earth's magnetic field

If changes in the magnetic field which occur independently of the earth's climate can be linked to changes in precipitation then it can only be explained through the magnetic field's blocking of the cosmetic rays he said.

When the reversed patches grow to the point that they dominate the rest of the core Earth's overall magnetic field flips.

's magnetic field takes between 1000 and 10000 years to reverse and in the process it greatly diminishes before it realigns.

According to John Tarduno professor of geophysics at the University of Rochester a strong magnetic field helps protect Earth from blasts of radiation from the sun. Coronal mass ejections (CMES) occasionally occur on the Sun

Some of the particles associated with CMES can be blocked by Earth's magnetic field. With a weak field this shielding is less efficient.

Valet agrees that a weak magnetic field could lead to the formation of ozone holes. He wrote a paper last year proposing a direct link between the demise of Neanderthals our evolutionary cousins

if the magnetic field and thus its shielding function became significantly weaker e g. during a reversal

According to Tarduno the strength of Earth's magnetic field has been decreasing for at least 160 years at an alarming rate leading some to speculate that we are heading toward a reversal.

The planet's magnetic field is showing signs of wanting to make a gigantic somersault so that magnetic north heads towards Antarctica

About every half a million years or so the Earth's magnetic field flips upside down. The story begins in 1600

The magnetic poles are where all the lines of force of Earth's magnetic field are drawn together. It does not coincide with the geographic poles the axis on

Also a bar magnet quickly loses its power yet the Earth's magnetic field has been around for billions of years

This is why Einstein remarked that the origin of the Earth's magnetic field was one of the greatest mysteries of physics.

As this subterranean ocean of liquid metal slowly whirls around it behaves like a dynamo generating electrical currents and magnetic fields.

and so the magnetic field at the surface of the Earth fluctuates. We know the magnetic polarity goes topsy-turvy from rocks on the bed of the Atlantic ocean.

Each time the magnetic field heads for a reversal it grows weaker over several thousand years until it almost disappears.

Magnetism trapped in ancient pottery shows that over the past 4000 years the magnetic field has weakened by more than 50%.

Another warning sign of an imminent flip has come recently from satellite measurements of the Earth's magnetic field.

In the largest patch beneath the southern tip of Africa the magnetic field is pointing towards the centre of the Earth instead of outwards.

or up/down axis. The Earth's magnetic field also stretches several hundred miles into space

or bursts of evolution during previous magnetic field flips they found nothing. Living organisms seem to have survived intact.

magnetic pole flip with the reduction of the Earths magnetic field. Which when it does occur does have an larger effect on the global environment in a broad spectrum influence with one of the influences being global warming.

Number 1 and 3 we humans only have the choice of adapting to the situationby the way NASA has written articles about the changing magnetic field and its effect on the environment too.

Some interesting Sun/Earth timing coincidences in the last flip. http://www. livescience. com/31795-earth-magnetic-field-reversal. htmldo not try

and the magnetic field theory stuff is fringe science just a hypothesis I wrongly accredited it to scientific theory as that would mean it is believed not to be proven false

The hard thing about the magnetic field theory is it takes such a long time period to actually know

The wisdom in human selection is the greatest risk factor here. tmarti69 As the Earth is currently in the beginnings of a magnetic polar flip with a ongoing to zero reduction of magnetic field more wild life will be subject to the the sun comsic radays

Suspiciously looking at the magnetic field of the Earth for the past 300 years has been decreasing in magnetic flux

and just focus on a reduction of Earth s Magnetic field we would have more solar radiation NOT being blocked by the magnetic fields

Coincidently the reduction in the Earth s magnetic field has been observed scientifically happening for the past 300 years.

but the fact remains for the past 300 years Earth s magnetic field solar shield has been reducing.

if this is just a natural cycle of the Earth may give less influence to the Politian s. It is known a fact that Earth s magnetic field has been reducing for the past 300 years and

If a Earth polar shift were to occur during that time period we may actual have a time period of little to no magnetic field and at times multiple north and south poles all over the Earth.

Starz Your concern seems to be with the way the magnetic field in space affects that of the core

So during a reversal complex magnetic fields are expected to persist and contain most of the energy.

b) in their neglect of indirect response by the stratosphere and of possible additional climate effects linked to solar magnetic field UV radiation solar flares and cosmic ray intensity modulations;(

magnetic field generated deep within the planet is a shield against particle radiation from space. In the South Atlantic this shield is much weaker than elsewhere across the globe

and spreading westwards from South africa as the Earth s internal magnetic field rapidly weakens in this region.

This may be early evidence of a forthcoming reversal in the direction of the Earth s internal magnetic field.

We do not know in detail precisely what occurs during such reversals including the changes observed in the magnetic field

The earth's magnetic field impacts climate: Danish study...COPENHAGEN (AFP)--The earth's climate has been affected significantly by the planet's magnetic field according to a Danish study published Monday that could challenge the notion that human emissions are responsible for global warming.

Our results show a strong correlation between the strength of the earth's magnetic field and the amount of precipitation in the tropics one of the two Danish geophysicists behind the study Mads Faurschou Knudsen of the geology department at Aarhus University in western Denmark told the Videnskab journal...

Man-made climate change may be happening at a far slower rate than has been claimed according to controversial new research.

http://www. viewzone. com/magnetic. weather. htmlearth's Magnetic field http://sedonanomalies. weebly. com/earths-magnetic-field. htmlglobal Warming Science-www. appinsys. com

/Globalwarmingearth s Magnetic field and Climate Variability last update: 2010/05/28 http://www. appinsys. com/Globalwarming/Earthmagneticfield. htm...Lost in migration:

Earth's magnetic field overdue a flip http://www. reuters. com/article/2012/10/03/us-science-earth-magneticfield-idusbre8920x620121003 (Reuters)- The discovery by NASA rover Curiosity

The only thing stopping Earth having a lifeless environment like Mars is the magnetic field that shields us from deadly solar radiation

Scientists say earth's magnetic field is weakening and could all but disappear in as little as 500 years as a precursor to flipping upside down.

It has happened before-the geological record suggests the magnetic field has reversed every 250000 years meaning that with the last event 800000 years ago another would seem to be overdue.

In the past 150 years the strength of the magnetic field has lessened by 10 percent which could indicate a reversal is on the cards.

The loss of the magnetic field on Mars billions of years ago put paid to life on the planet

Mac Niocaill said Mars probably lost its magnetic field 3. 5-4 0 billion years ago based on observations that rocks in the planet's southern hemisphere have magnetisation.

RIGHT HERE RIGHT NOWEARTH's magnetic field has restored always itself but as it continues to shift

In November it plans to launch three satellites to improve our fairly blurry understanding of the magnetosphere.

The project-Swarm-will send two satellites into a 450 kilometre high polar orbit to measure changes in the magnetic field

while a third satellite 530 kilometres high will look at the influence of the sun. DESCENT INTO CHAOSSCIENTISTS who have known for some time the magnetic field has a tendency to flip have made advances in recent years in understanding why

The Swarm mission will pull all these elements together to improve computer models used to predict how the magnetic field will move

Using Saturn s magnetic field can only propel a few grams at a time but approaching increments of light speed.

tmarti69 I don't know much about planetary magnetic fields but what you proposed with the embryos is not possible as the mother's immune system would destroy the developing alien fetus in situ.

There are several search engines about reaching a tenth to perhaps half the speed of light using Saturn s magnetic field.

As the process continues the Earth will loses it magnetic field against the suns radiation. This process is unstoppable and extreme in effect upon the Earth compared to the human induced industrial revolution warming.

http://www. aps. org/units/fps/newsletters/200807/monckton. cfmfor the last 150 yeas the magnetic field of the Earth is getting small

During the transition the magnetic field of the Earth will get extremely low and for a while will have multiple north

There might even be a period that the Earth will have no magnetic field with the Earth being hit hardest by solar radtion.

Perhaps if the magnetic field of Earth is diminishing and more solar radiation is coming into Earth could be an additional cause of global warming.

Interesting supporting links of Earths shrinking magnetic field on planet EARTH. After understand the process ask yourself then how would it effect our environment.

Earth's Magnetic field Is Fading http://news. nationalgeographic. com/news/2004/09/0909 040909 earthmagfield. htmlmagnetic Storm http://www. pbs. org/wgbh/nova/magnetic/about. htmlthe

Pole Shift has started August 18 2012 The Earth s magnetic field is weakening and moving. http://fuel-efficient-vehicles. org/energy-news/?

/p=1146earth s Weakening Magnetic field http://modernsurvivalblog. com/pole-shift-2/earths-weakening-magnetic-field/Add the sun natural cycles then add human induced carbon warming finally the reduction

of the Earths magnetic field which could have the largest effect on the environment and few are talking about

Okay wonder I'll comment on the weakening of the earth's magnetic field. It's happening.

The rate of decrease and the current strength are within the normal range of variation as shown by the record of past magnetic fields recorded in rocks. laurenra7 Thank you for responding.;

or radical drop in the magnetic field of local pottery from that time as well correct? 4. 54 Billion Earth has been here. 3000 years is such a tiny gap of time lol. soy sauce was reported first being used in Japan in 775:@

Mars has no magnetic field so that means no protection from solar radiation. This article seems to make support for Spacex

The magnetic field could come from reactors with magnesium oxide for with enough pressure and heat makes a field. plus we are thinkin wrong about mars. we need big domes one for humans one for livestock

At other points it s a naturally occurring hiccup like the X-Gene that allowed superhumans to manipulate brain waves or magnetic fields.

and into a chute repelled by the magnetic field. Everything else falls into a different chute.

#Suns magnetic field going to flip soon: 11-year solar cycle wimpy, but peakingin a 3-meter diameter hollow aluminum sphere Cary Forest a University of Wisconsin-Madison physics professor is stirring and heating plasmas to 500000 degrees Fahrenheit

to experimentally mimic the magnetic field-inducing cosmic dynamos at the heart of planets stars and other celestial bodies.

Ninety-three million miles away the Sun's magnetic field--and presumably its dynamo--is churning

and undulating as the star experiences the height of the so-called solar maximum where the sun's magnetic field contorts and eventually flips.

Solar max as scientists call it is an 11-year cycle where the sun's magnetic field reverses polarity typically spawning sunspots flares auroras

Over a period of about two years the sun's magnetic field switches directions and we know that

and the magnetic fields they generate in planets stars and other objects. Sunspots are just magnetic fields emerging from the sun. They are the diagnostic feature of

what's happening deep inside the sun. Flowing streams of electrons and protons are what create the magnetic fields deep in the sun's interior.

Those surging fields generate sunspots which can sometimes erupt and release vast amounts of energy in the form of solar flares or hiccups of material known as coronal mass ejections.

Unlike Earth's magnetic field which moves up or down as a familiar dipole the sun's huge magnetic field oscillates

and is less evident at the poles of the sun than at its midsection where sunspots typically occur.

or south Forest says noting that the charged particles are tugged into the atmosphere by Earth's magnetic field creating the beautiful red green and yellow displays of light.

or magnetic fields if you can find a way to attach it to something that will make it twist he said.

and is oriented by the magnetic fields in deep space has proved a six-decade-long theoretical challenge.

and organize themselves in the presence of magnetic fields to precisely align in key astrophysical environments.

and underpin novel observational tactics to probe magnetic fields in space. The new observations conducted by a team led by B-G Andersson of the Universities Space Research Association (USRA)

if we want to make use of polarimetry as a means of investigating interstellar magnetic fields says Lazarian who was encouraged to attack the problem by the renowned astrophysicist Lyman Spitzer.

which describes how irregular grains can be aligned by their interaction with magnetic fields and stellar radiation.

Their alignment is modified by magnetic fields which orients them with respect to the field telling an observer its direction.

and structure of magnetic fields in interstellar space a notoriously difficult phenomenon to measure quantitatively. Interstellar magnetic fields are ubiquitous in spiral galaxies like our Milky way

and are believed to be essential regulators of star formation and the evolution of proto-planetary disks.

Most surprising to the scientists is why a dramatic shift in the magnetic field that they had modeled

Scientists expected the magnetic field to change when Voyager crossed that boundary but it didn't Dr. Fayock said.

If it did said Zirnstein then we did expect that the magnetic field would change direction because according to our simulations in order for us to simulate the IBEX ribbon we have had to assume a quite specific direction and strength of the magnetic field.

So that's one thing that we're actually going to try to figure out why for some reason our ribbon simulation predicts a certain magnetic field direction.

We expected the magnetic field would change in direction significantly but all of the other measurements that Voyager made indicated that it did cross the heliopause except the magnetic field didn't change very much Zirnstein said.

Is it going to change later? But the fact that the density did change so dramatically that definitely is an indication that it did cross the heliopause.

Zirnstein's work sheds a great deal of light on the IBEX measurements said Dr. Zank. Tying together the IBEX global view with the extremely microscopic view of Voyager is very important.

What is the magnetic field doing? Why did it not change direction as we expected? Eric has sophisticated the most model to address energetic neutral atoms

and the ability to use them to probe the physics of the very local interstellar medium and its magnetic field.

Both scientists are keen for Voyager 2 to perhaps shed more light on the magnetic field conundrum

and appeared to be offset from the downwind direction possibly because of interactions from the galaxy's external magnetic field.

That's the effect the external magnetic field appears to be having on the heliotail. The IBEX spacecraft uses two novel ENA cameras to image and map the heliosphere's global interaction providing the first global views and new knowledge about our solar system's interaction with interstellar space.

In both cases electrical resistance drops to zero and complete expulsion of magnetic fields occurs. Superconductors have the ability to transport large electrical currents and produce high magnetic fields

which means they hold great potential for electronic devices and power transmission. The recent finding by the University of Arkansas-led team is important to further understand superconductivity Chakhalian said.

These newly formed pickup ions begin to gyrate around the local interstellar magnetic field just outside the solar system.

In the regions where the magnetic field is perpendicular to their initial motion they scatter rapidly

Using information provided by this new model future studies of the ribbon could help determine the properties of the nearby galactic magnetic field opening a window into the physics of the nearby galactic medium.

In addition the IBEX ribbon could provide researchers with a means for measuring the strength of the interstellar magnetic field as well as its direction.

#Cosmic roadmap to galactic magnetic field revealedscientists on NASA's Interstellar Boundary Explorer (IBEX) mission including a team leader from the University of New hampshire report that recent independent measurements have validated one of the mission

and particles at the edge of our solar system that appears to be a directional roadmap in the sky of the local interstellar magnetic field.

Unknown until now the direction of the galactic magnetic field may be a missing key to understanding how the heliosphere--the gigantic bubble that surrounds our solar system--is shaped by the interstellar magnetic field

Establishing a consistent local interstellar magnetic field direction using IBEX low-energy neutral atoms and galactic cosmic rays at ten orders of magnitude higher energy levels has wide-ranging implications for the structure of our heliosphere

How magnetic fields of galaxies order and direct galactic cosmic rays is a crucial component to understanding the environment of our galaxy which in turn influences the environment of our entire solar system

Notes David Mccomas principal investigator of the IBEX mission at Southwest Research Institute and coauthor on the Science Express paper We are discovering how the interstellar magnetic field shapes deforms

and cosmic ray data with Voyager 1's measurements the Voyager 1 data provide a different direction for the magnetic fields just outside our heliosphere.

< Back - Next >

Overtext Web Module V3.0 Alpha
Copyright Semantic-Knowledge, 1994-2011