HISTORY, ORIGIN OF MICROWAVE OVEN

You would be familiar with the appliance this one, which is useful for the cook or heat food quickly. Do you know how to work / working principle and the history of this tool? for you who do not know or want to add to the knowledge please observe the following article.

The history of the discovery of the microwave oven
Microwave oven was discovered by accident by the inventor Percy Lebaron Spenser, which is a major American inventor who already has 120 patents on inventions. His invention began when he was working at a defense agency Raytheon in 1945, when he was researching the ability of a radar and passed through a radiator / Magnetron who are working all of a sudden he found chocolate that is melted in his pocket, from which he started doing research on the use of microwaves to heat food.

The first generation of the microwave oven weighs approximately 400kg which is about the size of a refrigerator, with the weight as it is not possible to be used in the household, then the use of the microwave oven when it is only for use in aircraft and ships that are useful to warm foods with more quickly.

The first company to produce a microwave oven is a Tappan Company introduced and marketed to the United States in 1952.

Microwave oven is an electronic device that uses electromagnetic waves with very high frequency SHF (super high frequency) is above 3X109Hz.

Tube that can generate electromagnetic waves has existed since 1940 by John Randall and Dr. H. A. Boot from the UK. At that time the tube is used as a component of a functioning radar searched and found traces of an object by using microwaves with a frequency of about 1010Hz.


The working principle of a microwave oven
The microwave oven is one of the useful home appliances to cook or warm food or drink, this tool works with tapped microwaves produced by a vacuum tube called Magnetron located inside the microwave oven.

Micro wave generated by the magnetron will be reflected by the inner walls of the oven are made of steel or iron metal so that the waves trapped inside the microwave oven.

Microwaves can only be reflected by metals but can penetrate non-metallic materials without heating the non-metallic materials.

When we wear microwaves heat the water then there is the microwave will make the water molecules move randomly with a very high speed, consequently there was friction between molecules generates heat, the event is similar to the incidence in the palms of our hands digesek- rub the skin over time our hands will feel the heat due to friction.