Electromagnetic energy produces electricity through changes in the magnetic field. It was discovered by Orsted in 1820 and studied by Ampere, Faraday, Hertz, and Einstein. It is a fundamental force in physics that enables interactions between atoms and the production of electricity.
Electromagnetic energy uses the force on the particles of the electromagnetic field. The concept produces electricity through the use of changes in the magnetic field. This is most easily found within systems such as electrical generators, AC motors, and transformers.
The property of electromagnetic energy was first identified on April 21, 1820 by Hans Christian Orsted. While preparing for a lecture, he noticed that an electric current from a battery caused a compass needle to move. In honor of his discovery, the individual unit of magnetic induction is called an oersted.
Following Orsted’s discovery, a number of researchers attempted to understand the phenomena in what became the scientific discipline of electrodynamics. Some of the more notable individuals working in the field included Andre-Marie Ampere, Michael Faraday and Heinrich Hertz. Research has shown that electromagnetic power was responsible for almost all forms of radiation from radio waves to gamma rays.
Albert Einstein also studied electromagnetic energy in the early 20th century. He postulated that the principles of electromagnetism were responsible for the photoelectric effect and the existence of photons. This meant that the existence of the magnetic field and its forces were important for almost all aspects of visible light.
Electromagnetic power is considered one of the fundamental forces in physics that explains the workings of the universe. Interactions between atoms are caused by this force electrically stimulating the protons and electrons of the atoms. All objects in the universe contain this fundamental force. Inside the human body, the electromagnetism of cells is responsible for enabling people to move objects. Chemically, the magnetic attraction of electrons causes all reactions between substances.
In terms of mechanical devices, electromagnetic energy is essential for the production and use of electricity. Mechanical energy can be converted into electrical energy using the concept of induction. Voltage is produced by placing a conductor in a changing magnetic field. Essentially, electricity already exists within the device, it just needs to be stimulated by changing the magnetic field. As the magnetic flux changes in a closed loop, the side effect is the stimulation of electrons resulting in the production of electricity.
The opposite effect of converting electrical energy into mechanical energy is also caused by electromagnetism. A motor that draws direct current or alternating current from a power source converts energy. As electricity passes through the motor, the magnetic field is fluctuated, creating mechanical power.
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