Sentences with phrase «magnetic field»

A magnetic field is the area around a magnet or a charged object where it can pull or push other magnets or charged objects. It is an invisible force that attracts or repels certain substances and has an effect on the movement of electrically charged particles. Full definition
A new instrument gave the team minute - by - minute updates on the strengths of magnetic fields in the spots.
This finding opens the door to understanding the role of magnetic fields in some of the most powerful events in the universe.
A significant feature of these molecular probes are that they stable outside of strong magnetic fields which means they could be easily delivered to the patient in a clinical setting.
They emerge where dense bundles of magnetic field lines from the sun's interior break through the surface.
What is clear is that it involves chemical reactions that interact with magnetic fields.
So when we think or feel, our brains are generating magnetic fields.
It works by using magnetic field to produce heat in the pot.
It's a potential indication of an incredibly powerful magnetic field around the planet.
The precise rate at which a nucleus turns depends on the exact magnetic field at its position, which in turn depends on the relative positions and chemical identities of its neighbors.
The sun's plasma is a tremendously hot mix of separated electrons and ions, which means they are charged and naturally create magnetic fields.
These explosions throw out fast - moving magnetic fields which reflect charged particles.
«All of my research is performed under extreme conditions at high pressure, low temperatures and high magnetic fields with the aim to study magnetic and electronic properties,» she explains.
We help you to eliminate electric and magnetic fields for your wellbeing or technical needs.
Here, for the first time the response can be attributed to the rate of magnetic field changes.
This implies that the direction of motion can be changed at any moment by a proper sequence of applied magnetic fields.
In 2006, they reported that turbulence within the sodium flow in their device generates its own weak magnetic field.
But a strong external magnetic field can reduce that resistance by bringing the magnetic moments into alignment.
When magnetic field lines interact, they can release high - energy ions and electrons, which produce X-rays and gamma rays.
It's the result of a particular magnetic property of materials — the magnetic moment, a tiny magnetic field produced by electrons orbiting the nucleus of an atom.
The other obvious problem is that you are essentially trying to operate one very strong magnetic field within another even stronger one.
A machine maps electrical brain activity by measuring magnetic fields around a volunteer's head.
The moon does not currently have a global magnetic field.
Another downside: Many metal objects, including cell phones, laptops, and guests with metal plates in their heads, can not be stored in the intense magnetic field underneath the bed.
There is other speculation about magnetic fields causing lymphoma in dogs, but this is unproven.
Dogs and some primates can sense the earth magnetic field with the help of molecules in their eyes.
As the rock cools, the electrons can no longer alter their orientation and the aligned electrons create their own magnetic field.
The new tool provides fresh insights into how black holes influence the distribution of dark matter, how heavy elements are produced and distributed throughout the cosmos, and where magnetic fields originate.
Instead of wires, a handful of magnets above the chip induced magnetic fields.
In the system, nanoparticles injected into the brain convert a gentle, external magnetic field into heat, which triggers heat - sensitive ion channels that have been genetically engineered into neurons.
But just how magnetic fields affect the process is a subject of debate among researchers.
Some particles are neutral, and neutral particles aren't subject to magnetic fields like charged particles are.
This spectacular discovery may lead to radically new magnetic field sensors, for smartphones for example.
Such cycling, and the protective magnetic field generated by the core, keep our planet at the perfect temperature for life.
They note that, unlike strongly focused Wi - Fi, focused magnetic fields do not have a heating effect on human tissue.
Another key to the bot's performance is the continuously rotating magnetic field.
Tests show that it will probably switch between magnetic fields two to three times as quickly as the existing system.
It is likely that the solar magnetic field provides the necessary energy, but the mechanism is poorly understood.
They observed that the application of a sufficiently large magnetic field to this material suppressed spin waves associated with the long - range order, and drove it to an unusual excited state.
But they also found that even very small magnetic fields were enough to prevent thermal fluctuations from flipping electron spins.
Normally the galaxy's magnetic fields protect us from that radiation.
They find their way across the globe by sensing magnetic fields — but how?
As I posted previously, planetary magnetic fields give us strong evidence for a young solar system and a young earth.
The geological record also doesn't show much evidence for major changes in the intensity of the ancient magnetic field over the past 4 billion years.
The observations confirm that magnetic fields play a strong role in the formation of these solar giants.
First came news that birds may see magnetic fields, thanks to quantum effects.
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