How magnets help in our daily life?
Health and Medicine: Magnets are also used in medicine. Equipment such as MRI machines use magnets to operate. In addition to medical devices, magnets are used in the treatment of cancer. A magnetically sensitive fluid is injected into the patient’s body, then a powerful magnet is used to generate heat in the body.
Why do we need magnets?
Maxwell showed mathematically how a changing magnetic field creates a changing electric field (and vice versa). Therefore, magnetism is very important because we use it to create electrical energy. In fact, most of the energy that we use today comes from rotating magnets (see below).
Why do magnets only attract to certain metals?
Magnets don’t attract only those metals. Magnetism occurs when a large number of electrons with parallel spins occur within a crystal. The atoms of any element which has electrons with parallel spins behave like a magnet. Magnetic interaction can be observed in substances which are either ferromagnetic or paramagnetic.
What are magnets and how do they work?
Magnets are objects that produce magnetic fields and attract metals like iron, nickel and cobalt . The magnetic field’s lines of force exit the magnet from its north pole and enter its south pole.
Why does a magnet attract another magnet?
One magnets attracts another magnet when it produces a magnetic field around itself. Depending on the charge of this field, a magnet may either attract or repel another magnet. Magnets and magnetic fields were first discovered by the ancient Greeks.
Why are magnets only attracted to iron?
Magnets attract iron due to the influence of their magnetic field upon the iron. When exposed to the magnetic field, the atoms begin to align their electrons with the flow of the magnetic field, which makes the iron magnetized as well.