A branch of physics deals with electric current or fields and magnetic fields and their interaction on substance or matter is called Electromagnetism. Electromagnetism has created a great revolution in the field of engineering applications. In addition, this caused a great impact on various fields such as medical, industrial, space, etc. We can find enormous […]
Electromagnetic Actuators
Actuators convert a given kind of energy into mechanical energy. There are different classes of actuators depending on the physical principle on which the energy conversion takes place. Some of these classes of actuators which are widely used in industrial applications include hydraulic actuators, electrostatic actuators, electromagnetic actuators, thermal expansion actuators and pneumatic actuators. In […]
MEMS Based Sensors
In this 21st century, MEMS technology has been showing its potential to revolutionize consumer as well as the industrial products by combining silicon based microelectronics with micro machining technology. MEMS technology offers significant benefits over the existing microscopic electromechanical sensors. MEMS refers to the devices that have the characteristics of very small in size raging […]
Hall Effect Sensors
The most commonly used and widespread method of detecting the magnetic field is the Hall-effect method among the various sensing technologies. Based on the Hall-effect, there are numerous Hall-effect sensors or transducers found in a wide variety of applications that are most commonly used for sensing proximity, speed, current and position. This is because it […]
Radiation of Electromagnetic Waves
According to Maxwell’s equations, electromagnetic fields are produced or created by the time varying sources such as currents and charges. If these fields are produced by the time varying sources and are confined to propagate as a wave inside a wave guide or along a transmission line, then the wave is generally referred as a […]
Electromagnetic Waves
Waves are omnipresent in nature that transfers the energy or information from source to destination. The wave is a function of both space and time. An exotic kind of wave is electromagnetic wave which existence is stated by the professor Heinrich Hertz but earlier Maxwell himself predicted the existence of electromagnetic waves. These waves can […]
Electromagnetic Induction
In general, magnetostatic fields are produced by the motion of electric charges with uniform velocity whereas electrostatic fields are produced by the stationary charges. On the other hand, electromagnetic fields are the time varying fields that are produced by time varying currents. These fields cause to generate emf based on electromagnetic induction principle. In 1831, […]
Electrostatics
The electromagnetism is a branch of physics that deals with electric and magnetic fields and their interaction with substance or matter on a microscopic level. The various domains in the electromagnetism are electrostatics, magnetostatics, electrokinetics and electrodynamics. During the study in practical applications as well as for macroscopic phenomena, these domains are very useful. Similar […]
Magnetostatics
In contrast to the electrostatics, which deals with static electric charges (also called Coulombian approach), magneto statics deals with stationary electric currents (also called Amperian approach). In 1820, the scientist Oersted has discovered the relationship between electric and magnetic fields. He stated that the charges are surrounded by a magnetic field when charges are in […]