Physics Lesson 16.1.9 - Magnetism in Use

Please provide a rating, it takes seconds and helps us to keep this resource free for all to use

★★★★★ [ 1 Votes ]

Welcome to our Physics lesson on Magnetism in Use, this is the ninth lesson of our suite of physics lessons covering the topic of Introduction to Magnetism, you can find links to the other lessons within this tutorial and access additional physics learning resources below this lesson.

Magnetism in Use

Magnets have a wide range of use in today's world. In this paragraph, we will briefly discuss only a few of them.

Magnetism in home appliances
Magnets are used in many home appliances such as in refrigerators, computers, sound systems, etc.
Flexible magnetic strips are enclosed within plastic covers attached around a fridge's door. These magnets keep the fridge's door firmly closed so that no heat is exchanged with the surroundings.
Hard discs of computers are covered by a layer of magnetic material. Magnetism is used in computer storage because it goes on storing information even when the power is switched off.
Sound systems use magnetic materials to transmit the sound through loudspeakers. Inside almost every speaker, there is a magnet, a coil of wire, and a thin material to convey the sound into the air. The invention of strong rare-earth magnets allows speakers to create more sound using less electric current.
Magnetism in medicine
Magnetic resonance is one of the most marvelous applications of magnetism in medicine. Most imaging techniques make use of X-rays to see inside the human body. Magnetic resonance is one of the revolutionary and techniques besides echo that is not hazardous for the health. Nuclear Magnetic Resonance NMR technique is used in medicine to obtain three-dimensional images of the inner parts of the human body. NdFeB (neodymium) is a high-end rare earth magnet. In terms of medical treatment, NdFeB has been widely used in physical magnetic therapy. Due to its excellent magnetic properties, NdFeB magnets have been widely used in the field of medical treatment. The use of this magnet can increase the blood supply and supply of the brain, reduce the excitability of the nerve of the cerebral cortex, and increase the blood circulation to the organs of the lungs, spleen, liver and perianal, and boost the local blood supply by enhancing the biological electromagnetic energy of the body and collaterals. NdFeB is often used for the physical treatment of a variety of diseases.
Magnetism in industry
Magnetism in industry is mainly used in metal processing technology. Permanent magnets are used to separate metals from non-metals applying the procedure shown in the figure.

You have reached the end of Physics lesson 16.1.9 Magnetism in Use. There are 9 lessons in this physics tutorial covering Introduction to Magnetism, you can access all the lessons from this tutorial below.

More Introduction to Magnetism Lessons and Learning Resources

Magnetism Learning Material
Tutorial ID	Physics Tutorial Title	Revision Notes	Revision Questions
16.1	Introduction to Magnetism
Lesson ID	Physics Lesson Title	Lesson	Video Lesson
16.1.1	A Brief History of Magnetism. Natural and Artificial Magnets
16.1.2	Magnetic Field of Magnets and Earth. Magnetic Poles
16.1.3	Magnetic Field Lines
16.1.4	How is a Magnet Produced?
16.1.5	Permanent and Temporary Magnets
16.1.6	The Earth as a Giant Magnet. Two North Poles.
16.1.7	Magnetosphere
16.1.8	Magnetism in Animals
16.1.9	Magnetism in Use

Whats next?

Enjoy the "Magnetism in Use" physics lesson? People who liked the "Introduction to Magnetism lesson found the following resources useful:

Application Feedback. Helps other - Leave a rating for this application (see below)
Magnetism Physics tutorial: Introduction to Magnetism. Read the Introduction to Magnetism physics tutorial and build your physics knowledge of Magnetism
Magnetism Revision Notes: Introduction to Magnetism. Print the notes so you can revise the key points covered in the physics tutorial for Introduction to Magnetism
Magnetism Practice Questions: Introduction to Magnetism. Test and improve your knowledge of Introduction to Magnetism with example questins and answers
Check your calculations for Magnetism questions with our excellent Magnetism calculators which contain full equations and calculations clearly displayed line by line. See the Magnetism Calculators by iCalculator™ below.
Continuing learning magnetism - read our next physics tutorial: Magnetic Field Produced by Electric Currents

Help others Learning Physics just like you