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Current theory is that the mechanism for field generation is the "geodynamo". The outer core rotates and conducts energy.
What else can I help you with?
Why is magnet unable to stick to a stainless steel refrigerator?
If a magnet doesn't stick to a material, that means that the material is non-magnetic. Every individual atom is a magnet, but in a magnetic material, there are groups of atoms (called "magnetic domains") that have their magnetic directions aligned. An outside magnetic field in such materials will align some of the magnetic domains in the direction of the magnetic field.
What is magnetic hysteresis?
Magnetic hysteresis is the phenomenon where the magnetization of a material depends not only on the current magnetic field, but also its history. When the magnetic field is applied and then removed, the material retains some magnetization, showing a lag or "memory" in its response to changing magnetic fields. This results in the characteristic hysteresis loop observed in magnetic materials.
In an electric motor a magnetic field causes what to spin?
The rotor (which is some type of magnet).
How is earth a magnetic field?
The earth's magnetic field is caused by the fact that the earth has a moltern iron core. When moltern iron spins it causes an electric field. This causes an electromagnetic field. Some planets are too large or too small for the iron in their core to be molten.
What is a piece of magnetic material that remains its magnetic proporties after it is removed form a magnetic field?
Many materials which are capable of being effected by a magnetic field will retain some of those properties once its no longer in direct contact with the field. One example is iron. It can become magnetized by being introduced to a magnetic field and then continue to remain magnetic once the source field is removed.
Magnetic field in multiple media?
When a magnetic field passes through different media, the level of magnetism can change due to the material's magnetic properties. Some materials such as ferromagnetic substances like iron can enhance the magnetic field, while diamagnetic materials like copper can slightly weaken it. The effectiveness of a magnetic field passing through different media is often described by the material's magnetic permeability.
Is silver a magnetic material?
No, it is not. However, when it is at very very low temperatures, it may display some weak magnetic properties.
How are magnetic domains are arranged in a magnetic material?
Magnetic domains in a magnetic material are regions where atomic magnetic moments align in a common direction. These domains can be arranged in various ways, including in a random manner, aligned in specific directions, or in a more organized pattern depending on the material and external magnetic field. The overall magnetic properties of the material depend on the size, orientation, and interactions between these domains.
Is magnetic flux the same as the magnetic feld?
magnetic field is a imaginary area around a manetic material where other magnetic subestences experience some force but flux is the imaginary lines of force that arise from magnet which indicate direction of force around it.
When a magnet is placed near a magnetic material the magnetic material becomes a magnet . what is the name of this process?
The process by which a magnetic material becomes magnetized when placed near a magnet is called "magnetization." During this process, the magnetic domains within the material align in the direction of the external magnetic field, resulting in the material exhibiting its own magnetic properties. This effect is temporary for most materials, but some can retain magnetization, making them permanent magnets.
What is meant by diamagnetic shielding?
Diamagnetic shielding refers to the ability of a material to create a magnetic field in the opposite direction to an external magnetic field, thus reducing the overall magnetic field within the material. This shielding effect helps protect sensitive equipment or materials from the influence of external magnetic fields. Materials with diamagnetic properties include superconductors and some metals like bismuth and copper.
What causes the earth's modest magnetic field?
Our magnetic field is caused mostly by our substantial core of molten iron. The field may be modest by some measurements, but we would probably not exist without it. It is sufficient to protect us from some harmful particle emissions from the sun.
