20 Examples of Electromagnetism

The electromagnetism is an important branch of physics; his mission is to study electrical and magnetic phenomena by bringing them together in a single theory. The bases of knowledge in electromagnetism were established by the British Michael Faraday.

Time after James maxwell completed these research; In this way, four vector equations were delineated that relate the electric field, the magnetic field and their corresponding sources: these are known as Maxwell's equations or laws.

Examples of electromagnetism

Examples of equipment or situations that are based on electromagnetism are given below:

1. Kitchen microwave
2. Transformers
3. Magnetic card readers
4. Pendrives
5. MRI equipment for medical studies
6. Microphones
7. Planes
8. Digital cameras
9. Cell phones
10. Thermometers
11. Optical instruments
12. Magnets
13. Compasses
14. Plates
15. Ultrasound equipment
16. Oscilloscopes
17. Mass spectrometers
18. Modems
19. Tomographs
20. Mammographs

Functions of electromagnetism

Electromagnetism deals with describing the physical phenomena macroscopic in which electric charges intervene, both at rest and in motion. It is clear, then, that it does not describe phenomena on an atomic or molecular scale; To do so with such a level of detail requires resorting to other disciplines, such as quantum mechanics.

It is known that electromagnetic waves They travel in a vacuum at the speed of light and they are capable of transporting energy through space. The amount of energy carried by an electromagnetic wave depends on its frequency.

Types of magnetic substances

Magnetic substances can be:

Key concepts

The application of electromagnetism

Electromagnetism has not only been crucial in the field of engineering, also in others such as medicine, construction, aeronautics and even biology.

Inside of medicine it is worth highlighting the technique magnetic resonance imaging, which is based on the magnetic properties of certain nuclei of atoms, such as hydrogen.

Images by magnetic resonance They use electromagnetic waves between 3 KHz and 300 GHz and a powerful magnetic field. This allows them to create detailed images of organs and tissues within the living beings non-invasively and safely since ionizing radiation should not be used.

Today this application is key for the diagnosis of vascular or musculoskeletal diseases.

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