No, its not a name of a Transformer but it is a part of a common household thing called microwave oven. This pat is the most important part of it which generate the microwave radiation.
Today, it has become an important part of our households. You can’t imagine a kitchen without a microwave oven. But in fact I don't have one. So are we interested to know, what exactly is a microwave oven and how does it work? This article is going to answer all your questions about this amazing gadget.
Principle: Microwave radiations generated by a magnetron pass through the exposed food, create dielectric heating within the food, this is the basic principle on which a microwave oven works.
Magnetron has tens of other applications other than microwave ovens, but it’s purpose is to generate microwaves of required frequency and wavelength. Magnetron was invented by Dr. Hull (USA) in 1921. During the second world war, it was then modified to use in radar technology, later it’s application in cooking was discovered. That’s why it is generally said that, microwave oven is the only gift which war has given to humanity.
The heart of microwave oven is a device to generate microwaves of required frequency and wavelength called magnetron. Microwaves generated by the magnetron are bombarded on the food, which cook the food through a process called dielectric heating.
The magnetron generates microwave which has frequency between radio and infra-red. In common home ovens, the frequency of microwave radiation is 2.45 Ghz with a wavelength of 122 millimetres. It is to be noted that, microwaves always posses an alternating electric and magnetic field around them. When microwaves penetrate through the exposed food, they are intervened by the dipolar water molecules present within the food. As the electric and magnetic fields associated to the microwaves alternate, the individual water molecules also rotate to align their dipoles with respect to the changing electric field they are subjected to these electric and magnetic fields, alternating 2.45 billion times a second in case of a microwave oven. This causes the dipolar water molecules to rotate or simply move back and forth at a high speed, which causes vibration and thus causing molecular friction. This causes heat generation at the molecular level. This whole process works under a principle of dielectric principle.
Enjoy reading and be open to the things that world has to offer.
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