Magnets repel when like poles face each other (north to north or south to south), creating opposing magnetic fields that push the magnets apart.
Why do magnets attract and repel?
Magnets attract or repel because of the invisible magnetic field created by moving electrons inside the material.
Think of each atom in a magnet as a tiny bar magnet itself. The electrons spin and orbit in a way that creates a net magnetic force. When these atomic magnets line up in the same direction, they form magnetic domains. Get enough domains aligned, and the material becomes magnetized. The direction of this alignment determines whether the object attracts or repels other magnets. As the Encyclopaedia Britannica points out, this alignment is why some materials become permanent magnets while others only show temporary magnetic effects.
How do magnets repel each other?
Magnets repel each other when like poles (north to north or south to south) are brought close together.
Picture two bar magnets facing each other with their north poles together. The magnetic field lines flow from north to south outside the magnet. When two north poles face each other, those field lines try to go in opposite directions, creating tension. That tension pushes the magnets apart. It’s like trying to mash two identical sides of a zipper together—they just won’t mesh. The Explain That Stuff website shows clear diagrams of how field lines interact during repulsion.
What would a magnet repel?
Magnets weakly repel diamagnetic materials like water, wood, plastic, graphite, copper, gold, and living tissue.
Diamagnetism makes materials create an opposing magnetic field when exposed to an external one. This repulsion is extremely weak—about a million times weaker than the attraction of ferromagnetic materials like iron. A strong neodymium magnet might barely nudge a drop of water. The Scientific American has a fun experiment where you can levitate a tiny piece of graphite using a strong magnet. It proves even everyday materials respond to magnetism, though feebly.
What is the most magnetic material in nature?
The most magnetic material found in nature is magnetite, also known as lodestone.
Magnetite is an iron oxide mineral with the chemical formula Fe₃O₄. It’s the only mineral that acts as a natural permanent magnet, attracting iron objects without being magnetized itself. Ancient civilizations discovered lodestone’s properties and used it to create the first compasses. The U.S. Geological Survey notes magnetite is common in igneous and metamorphic rocks and causes magnetic anomalies in Earth’s crust.
Are two magnets stronger than one?
Stacking two or more magnets together increases their combined magnetic strength, nearly matching the strength of a single magnet of the same total size.
This happens because the magnetic fields of each magnet align in the same direction, creating a cumulative effect. Stack two identical neodymium magnets correctly (north to south), and you’ll get roughly double the pull force. The gains aren’t perfectly linear, though—there’s a slight loss due to spacing and alignment imperfections. Ever struggled to separate a stack of strong magnets? That’s this principle in action. The K&J Magnetics calculator lets you experiment with different stack configurations to see how strength changes.
Which ends of magnets attract?
The north pole of one magnet attracts the south pole of another, while like poles (north to north or south to south) repel.
This rule is as fundamental as it gets in magnetism. The north pole of a magnet is defined as the end that points toward Earth’s geographic North Pole when the magnet is free to rotate (like in a compass). The south pole does the opposite. This alignment is why compasses work—the Earth itself is a giant magnet with a magnetic south pole near the geographic North Pole. The NASA Space Place uses a great analogy: think of magnetic poles like the ends of a battery—opposites attract, and likes repel.
What magnets attract?
Magnets are only strongly attracted to ferromagnetic materials like iron, cobalt, nickel, and some alloys.
These materials have magnetic domains that can align with an external magnetic field, turning them into temporary magnets. A magnet sticks to a steel paperclip because steel contains iron. Other metals like aluminum, copper, brass, and gold aren’t attracted to magnets. That’s why coins (often copper or zinc) don’t stick to a fridge magnet unless they contain iron. Ever tested a magnet on a keyring? Some keys stick while others don’t—that’s the difference between ferromagnetic and non-ferromagnetic metals. The Royal Society of Chemistry has an interactive periodic table where you can check which elements are magnetic.
How far away can magnets attract?
The practical range for a typical refrigerator magnet to attract or repel another magnet is about 5 to 10 centimeters (2 to 4 inches), depending on its strength.
Stronger magnets, like neodymium types, can exert force up to 30 centimeters (12 inches) or more. The distance depends on the magnet’s size, shape, and material. A small neodymium magnet might pick up a paperclip from across a table, while a weak ceramic magnet might only work when nearly touching. The Magnetar magnetic field strength guide provides detailed specs on how distance affects pull force. In nature, Earth’s magnetic field can pull a compass needle from thousands of kilometers away, but this is a massive magnet interacting with a tiny one.
Can magnets repel bullets?
No, standard bullets are not ferromagnetic and won’t be repelled by magnets.
Most bullets are made of lead, often jacketed with copper or brass—neither of which is attracted to magnets. While a magnet won’t stop a bullet in flight, it might impart a tiny force via eddy currents if the bullet is moving fast enough. In 2021, a viral video claimed magnets could stop bullets, but MythBusters debunked it. The lead in bullets is weakly diamagnetic, meaning it would experience a minuscule repulsive force, but this is negligible compared to the bullet’s momentum.
What is the strongest magnet?
The strongest permanent magnets in the world are neodymium magnets (Nd₂Fe₁₄B), which can lift over 1,000 times their own weight.
Neodymium magnets are made from an alloy of neodymium, iron, and boron. They’re brittle and prone to corrosion, so they’re often coated with nickel or gold. These magnets are used in hard drives, electric motors, and MRI machines. For comparison, a neodymium magnet the size of a coin can hold up to 10 kilograms (22 pounds) of weight. The Wonder Magnets grade chart shows how different grades (like N35, N42, N52) compare in strength. As of 2026, research into even stronger magnets, like those using dysprosium or terbium additives, continues but hasn’t surpassed neodymium in practical applications.
When are the force of magnetism is stronger?
The magnetic force is strongest at the poles of a magnet and weakens toward the center.
That’s because the magnetic field lines are most concentrated at the poles. Ever held two bar magnets and felt them snap together? You’ve felt the pull at its strongest. The force drops off rapidly as you move away from the poles or toward the center of the magnet. For a classic horseshoe magnet, the field is strongest at the two tips of the U-shape. The Explain That Stuff website includes a helpful graph showing how magnetic field strength varies along the length of a bar magnet.
What is the most magnetic metal on earth?
The most magnetic metal on Earth is pure iron, though neodymium magnets are stronger due to their alloy composition.
Pure iron is highly ferromagnetic at room temperature, meaning it can be easily magnetized and retains its magnetism well. However, it’s not used in strong permanent magnets because it loses its magnetism when heated above 770°C (Curie temperature). Neodymium magnets are stronger because their alloy structure allows for more aligned magnetic domains. As the Nature article on neodymium magnets explains, these alloys can maintain their magnetism even at high temperatures, making them ideal for industrial use. If you’re testing metals, a strong magnet will stick to iron, steel, cobalt, and nickel—but not to aluminum or copper.
Which is the best procedure to make a permanent magnet?
The most reliable method is the stroking method: repeatedly stroke a ferromagnetic material (like a steel bar) in one direction with a strong magnet.
Start by placing the north pole of a strong magnet against one end of a steel bar. Stroke the magnet along the bar from one end to the other, then lift it away and repeat the process 10–20 times in the same direction. This aligns the magnetic domains in the steel, turning it into a permanent magnet. For better results, tap the steel bar lightly with a hammer while stroking to help the domains align. The Science News DIY guide includes photos of this process. Avoid using soft iron, as it loses its magnetism quickly. Permanent magnets are made from materials like alnico (aluminum, nickel, cobalt) or neodymium, which retain their magnetism for years.
What material is permanent magnet?
Permanent magnets are made from ferromagnetic materials like iron, nickel, cobalt, and rare-earth alloys such as neodymium or samarium-cobalt.
These materials can retain their magnetism even after an external magnetic field is removed. The most common permanent magnets today are neodymium magnets, followed by ferrite (ceramic) magnets and alnico magnets. Each material has trade-offs: neodymium magnets are the strongest but brittle, ferrite magnets are cheap and corrosion-resistant, and alnico magnets perform well at high temperatures. The Magnets.com guide breaks down the pros and cons of each type. If you’re curious, you can buy small samples of each online to compare their strength and durability yourself.
Can a magnet be made stronger?
Yes, you can strengthen a weak magnet by aligning its magnetic domains using a stronger magnet or by stacking multiple magnets together.
If a magnet loses strength over time, it’s because its domains have become misaligned. You can realign them by repeatedly stroking the magnet with a stronger one or by striking it sharply with a hammer while holding it in a magnetic field. Stacking magnets with aligned poles (north to south) also increases their combined strength. For example, stacking two weak magnets can make them strong enough to pick up small metal objects. The Wonder Magnets FAQ notes that exposing magnets to heat or strong impacts can weaken them, so handle them carefully. Avoid dropping neodymium magnets—they can shatter or chip due to their brittleness.
When magnet are the force of magnetism is stronger?
The magnetic field of a bar magnet is strongest at either pole of the magnet.
The force is equally strong at the north pole when compared with the south pole. The force is weaker in the middle of the magnet and halfway between the pole and the center.
Alex Chen is a senior tech writer and former IT support specialist with over a decade of experience troubleshooting everything from blue screens to printer jams. He lives in Portland, OR, where he spends his free time building custom PCs and wondering why printer drivers still don't work in 2026.