How can you say that the electromagnetism changed the human life
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Electromagnetism has changed human life since it is a very strong magnet which is used in Maglev train in Japan, in scrap areas and also in loud speakers ,electric bell and many more.
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How Electromagnetism Changed our World
written by: sriram balu • edited by: Swagatam • updated: 12/1/2011
Electromagnetism has created a revolution not only in the field of engineering, but also in various other fields like medicine, space, construction etc. Read here to know about various uses of electromagnetism in everyday life from household appliances to research labs.
Uses of Electromagnetism in Life
Whatever powered devices we use, from table clocks to microwave ovens, have some form of electromagnetic principle involved in their functioning. It is electromagnetism which has given the flexibility for switching of/on electricity as required.
Electromagnets are created by having an iron core wound with a conductor carrying current. The strength of the electromagnet depends upon the amount of current passing through the conductor. Also the current can be easily stopped and started to form an electromagnet and de-energize respectively as per the need of the work to be performed. This is the principle used for moving heavy objects in the scrap yard. Electricity is connected to the circuit to power the electromagnets when they are energized. Thus the magnets start to attract scrap metal (junk cars), and carry them to the designated area. After locating them in a particular location, the electricity is disconnected from the circuit, thus de-energizing the electromagnet, making the scrap metal detach from the magnet.
Uses in Home Appliances:
Many of our electrical home appliances use electromagnetism as a basic principle of working. If we take an example of an electric fan, the motor works on the principle of electromagnetic induction, which keeps it rotating on and on and thus making the blade hub of the fan to rotate, blowing air. Not restricting to fan, many other appliances use electromagnetism as a basic principle. Electric door bell works on this principle too. When the door bell button is put on, the coil gets energized, and due to the electromagnetic forces, the bell sounds. The working of an electric bell is discussed in detailed manner in one of our articles. The loudspeaker which we use for public announcements in meetings, or to transmit message over a long distance, is a perfect example for an electromagnetic appliance. The movement of the coil under the electromagnetic force produces sound which is heard over a very long distance.
Also the modern way of locking the door or a bank safe is to have a magnetic locking device. Either they may be having a number secret code or a magnetic card which when swiped opens the door. The number keys are stored in the magnetic tape on the back of the card, interacts with the magnetic card reader in the door. When the data stored on the card and the memory matches, the door opens. Similar principle is used in the bank’s safe lockers.
written by: sriram balu • edited by: Swagatam • updated: 12/1/2011
Electromagnetism has created a revolution not only in the field of engineering, but also in various other fields like medicine, space, construction etc. Read here to know about various uses of electromagnetism in everyday life from household appliances to research labs.
Uses of Electromagnetism in Life
Whatever powered devices we use, from table clocks to microwave ovens, have some form of electromagnetic principle involved in their functioning. It is electromagnetism which has given the flexibility for switching of/on electricity as required.
Electromagnets are created by having an iron core wound with a conductor carrying current. The strength of the electromagnet depends upon the amount of current passing through the conductor. Also the current can be easily stopped and started to form an electromagnet and de-energize respectively as per the need of the work to be performed. This is the principle used for moving heavy objects in the scrap yard. Electricity is connected to the circuit to power the electromagnets when they are energized. Thus the magnets start to attract scrap metal (junk cars), and carry them to the designated area. After locating them in a particular location, the electricity is disconnected from the circuit, thus de-energizing the electromagnet, making the scrap metal detach from the magnet.
Uses in Home Appliances:
Many of our electrical home appliances use electromagnetism as a basic principle of working. If we take an example of an electric fan, the motor works on the principle of electromagnetic induction, which keeps it rotating on and on and thus making the blade hub of the fan to rotate, blowing air. Not restricting to fan, many other appliances use electromagnetism as a basic principle. Electric door bell works on this principle too. When the door bell button is put on, the coil gets energized, and due to the electromagnetic forces, the bell sounds. The working of an electric bell is discussed in detailed manner in one of our articles. The loudspeaker which we use for public announcements in meetings, or to transmit message over a long distance, is a perfect example for an electromagnetic appliance. The movement of the coil under the electromagnetic force produces sound which is heard over a very long distance.
Also the modern way of locking the door or a bank safe is to have a magnetic locking device. Either they may be having a number secret code or a magnetic card which when swiped opens the door. The number keys are stored in the magnetic tape on the back of the card, interacts with the magnetic card reader in the door. When the data stored on the card and the memory matches, the door opens. Similar principle is used in the bank’s safe lockers.
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