Microwave Ovens

Woodford, C. (2017, May 12). Microwave ovens | How do they work? Retrieved October 23, 2017,  from http://www.explainthatstuff.com/microwaveovens.html Posted 30 Sep 2016 | 19:00 GMT By Evan Ackerman. (2016, September 30). A Brief History of the Microwave Oven. Retrieved October 23, 2017, from https://spectrum.ieee.org/tech-history/space-age/a-brief-history-of-the-microwave-oven

How does a microwave turn electricity into heat? Inside the strong metal box, there is a microwave generator called a  magnetron . When you start cooking, the magnetron takes  electricity  from the power outlet and converts it into high-powered, 12cm (4.7 inch) radio waves. The magnetron blasts these waves into the food compartment through a channel called a wave guide. The food sits on a turntable, spinning slowly round so the microwaves cook it evenly. The microwaves bounce back and forth off the reflective metal walls of the food compartment, just like light bounces off a  mirror . When the microwaves reach the food itself, they don't simply bounce off. Just as radio waves can pass straight through the walls of your house, so microwaves penetrate inside the food. As they travel through it, they make the molecules inside it vibrate more quickly. Vibrating molecules have heat so, the faster the molecules vibrate, the hotter the food becomes. Thus the microwa...

However there are many disadvantages attributed to this type of cooking method. According to the experts and dieticians, regular and continuous entry to  midsize microwave  will have an impact on the nutritive value with the food adversely. The radiation process involved in the microwave cooking actually heat up the molecules to that extent of destroying your vitamins and certain natural nutrients in the food. Some experts estimate that almost ninety seven per cent of the nutritive value is going to be lost by the microwave cooking. It is therefore advised that microwave oven ought to be used sparingly for the purpose of defrosting or heating your stored food. If necessary it enables you to expedite cooking process within unavoidable circumstances. Nevertheless, the actual fact remains that the products food will be less nutritive in comparison to the food cooked in the standard stoves.

A fast and convenient appliance, microwave oven is now an unavoidable utility in the modern kitchen. Virtually no wonder, it's attained unprecedented popularity through the world. Individuals are fascinated by the innovative features incorporated inside latest versions, thanks to the evolving technology. Today it can be a multipurpose kitchen appliance raised for not only defrosting or reheating stored food, but also for baking, roasting, barbecuing and toasting. An extraordinary feature of the microwave oven is which it facilitates fat free cooking food, which is recommended for persons with health problems.                                      Widely used in the catering sector as well as in the households, this microwave is lauded due to the rapidity and energy efficiency. Earlier versions of this utility were mainly useful to reheat the frozen food and to make popcorn. The special...

As World War II came to an end, so did the market for the magnetron tubes that had been used to generate microwaves for short-range military radar. Magnetron makers like Raytheon eagerly sought new applications for the technology. It was well known that radio waves would heat dielectric materials, and the use of dielectric heating in industrial and medical contexts was fairly common. Raytheon engineer Percy Spencer took it further and decided to heat food using microwaves. That's how the microwave came to be.