Microwave oven working

In-home appliances ‘Microwave Oven’ is a milestone. It began humming and heating home kitchens till the 1970s. It seems to be a magical box that spins and heats food by invisible electromagnetic waves or microwaves.

Microwave Oven working

Microwave Oven

Microwave ovens cook foods by injecting them with, microwave – a form of energy. Microwaves are kind of electromagnetic waves which frequency range is greater than 1 GHz.

In simple terms, it can vibrate food molecules (food molecules should contain water, sugar, and fats) approximately at speed of 106 times in one second.

That’s how it generates heat in our food.

The story behind Invention:

Like many great accidental inventions, microwave ovens were one of them. In the 1950s, an American electrical engineer Percy Spencer was carrying out some experiment with a magnetron at their company. In those days magnetron was being used to generate microwave for RADAR (Radio Detection and Ranging). That day Percy Spencer had a chocolate bar in his pocket when he was carrying their experiment. He was surprised, the bar quickly melted because of the heating effect of the microwave (which was generated by a magnetron