# Physics of the Microwave Oven Essay examples

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Physics is in every area of life from the starry skies we see at night to the cells inside our bodies. Even what might appear to be the simplest thing is actually very complex when one looks at the details. Physics helps us understand the basics of how life operates. Microwave ovens are often used to reheat left over food, cook TV dinners and frozen foods, and to quickly heat food but is seldom recognized and understood by those who use them. People typically don’t know how a microwave oven operates, how it is structured, or how the food is actually heated.

Microwaves were first created in 1947 being 1.8 meters in height and 750 lbs created by Percy Spencer while building magnetrons for radar sets during World War II. The
There are two different types of radiation non-ionizing and ionizing the difference between the two is that ionizing radiation can change the molecules of an electron which can cause damage to tissues exposed to it; where as non-ionizing radiation doesn’t have the amount of energy to have this effect.

The differences in electromagnetic waves and their intensities, or energy levels, has to do with their frequency, which is the number of waves within a given unit of time. The higher the frequency (υ) the more intense the wave is and also shows us what the wavelength (λ), the distance between two peaks, is. The period is the time it takes for one full wave to cycle and the amplitude is the distance from the origin to the minimum or maximum value.

In a microwave there are a lot of different components that make it work, one component that makes microwaves unique the magnetron which was how microwaves were first invented, and the magnetron produces the electromagnetic waves so that they are able to cook food. The waves are used to control where the electromagnetic waves go inside the cooking chamber. Once the power is turned on "A capacitor is used to smooth out the current before it reaches the magnetron. (1)"

Electromagnetic waves are created by both electric waves which are created by having the microwave plugged into your normal power socket and magnetic waves which are created by the

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