The pattern around a magnet is called a magnetic field. The force of a magnetic field is strongest near the magnet and decreases with distance from the magnet. The force is also influenced by the orientation of the magnet and the material it is interacting with.
Magnetic domains are microscopic areas of a solid where the atoms all have their magnetic moments aligned. If these domains are randomly aligned then a ferromagnetic material like iron or nickel will not have any permanent magnetism. If these domains start to align with each other the bulk material will show permanent magnetism. The area around a magnet where the force acts is the magnetic field.
Stroke a magnet down the length of the pin repeatedly. The proximity and movement of the magnet along the pin cause some of the iron molecules to become aligned like those in the magnet. The more strokes, the stronger the magnetic field in the pin will become, up to a certain threshold (the number of iron molecules available and able to align in the pin is limited).
A magnetic field is a change in energy within a volume of space. A magnetograph can be created by placing a piece of paper over a magnet and sprinkling the paper with iron filings. The particles align themselves with the lines of magnetic force produced by the magnet. The magnetic lines of force show where the magnetic field exits the material at one pole and reenters the material at another pole along the length of the magnet. It should be noted that the magnetic lines of force exist in three dimensions but are only seen in two dimensions in the image.
If you bring a magnet close to iron pieces, you will observe that the iron pieces will be pulled towards the magnet. This attraction occurs because iron is a ferromagnetic material, meaning it can be magnetized and is attracted to magnetic fields.
One common method is using a magnetic field sensor and mapping the magnetic field strength around the magnet. By observing the variations in the field strength, you can identify two distinct regions where the magnetic field is concentrated. Another approach is using iron filings to visually show the magnetic field lines around the magnet, which can help visualize the two regions of concentrated magnetic strength.
These are known as magnetic field lines, which show the direction and strength of the magnetic field. They form loops around the magnet, moving from the north pole to the south pole outside the magnet and from the south pole to the north pole inside the magnet.
A magnetic field diagram illustrates the direction and strength of the magnetic field around a magnet. It can be used to visualize the magnetic field lines, which show how the magnetic force is distributed in space around the magnet. By looking at the diagram, one can understand the pattern of the magnetic field and how it interacts with other objects or magnets in its vicinity.
A bar magnet interacts with its surroundings by creating a magnetic field around itself. This magnetic field is represented by invisible lines that extend from the magnet's north pole to its south pole. These field lines show the direction and strength of the magnetic force exerted by the magnet.
by simple moving of its needle,or by change the direction of needle.
You can show the magnetic field around a magnet by using iron filings. Sprinkle the iron filings on a piece of paper or a glass surface placed over the magnet. The iron filings will align along the magnetic field lines, making the field visible.
The fillings align themselves according to the magnetic field created by the magnet. *See the related links to images of the fillings behaving this way, along with a drawing representing the magnetic fields to which the filings align. You can see how the fillings behave similarly in each of the different photos. (see also related question below)
The behavior of two magnets can show the presence of a magenetic for as follows:Unlike poles will attractLike poles will repel
Magnetic domains are microscopic areas of a solid where the atoms all have their magnetic moments aligned. If these domains are randomly aligned then a ferromagnetic material like iron or nickel will not have any permanent magnetism. If these domains start to align with each other the bulk material will show permanent magnetism. The area around a magnet where the force acts is the magnetic field.
A magnetic compass or iron filings can be used to show the magnetic lines of force. When a compass is placed near a magnet, the needle aligns along the magnetic field lines, indicating their direction. Iron filings sprinkled near a magnet will also align along the magnetic field lines, providing a visual representation of the magnetic field.
You place the magnet under a piece of paper, and then sprinkle some iron filings on the paper. The iron filings will line up along the magnetic lines of force, which will show very clearly where the magnetic poles are.
A plotting compass is a small magnet which is suspended and is free to rotate. When it is near a magnet, the compass will always point in a particular direction (the north pole's direction) becasue of the force of the magnetic field.
suspend the magnets from strings in such a way that they only repel each other. (Between two glass plates maybe, so they can't rotate.) measure the angle of the strings. Knowing the weight of each magnet, the acceleration of gravity, and the cosine of the angle between the strings this should give you enough to calculate the magnitude of the force between the magnets. (Providing you know vector addition of course.)