How do microwaves operate?
The electrons inside
a microwave oven are produced by a tube called a magnetron. Microwaves are
reflected in the metal interior of the oven where they are absorbed by the
food. Microwaves vibrate the water molecules in the food, creating the cooking
heat.
Working in
Microwave Science:
The theory behind
microwaves is very simple—it's all about the atom. As you add energy to
an molecule or particle, it trembles; More energy equals more vibration, and this generates heat.
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| Fig 1.1 Microwave Oven |
Even though many of us
know how to use it, do you know what a microwave is? How does it work and what
are the uses of these microwave ovens etc.?
Being a user of a
microwave oven, you must know about its working principle because until we
understand the working of a microwave, we will not know about the actual uses
of the microwave oven.
A microwave oven
converts electromagnetic energy, which has a low frequency, into
electromagnetic energy with a high frequency, which is easily absorbed by food
items and later converted into heat.
Because so many
people have asked us about what a microwave is and how it works, I thought I'd
provide you with complete information about what a microwave oven is in Hindi
so you can get a better understanding of it. Don't have any doubts either. So
without hesitation, let's start and learn about microwave ovens.
What microwave oven can do? Microwave
Oven
A microwave oven is a
very popular kitchen device that serves to heat and cooks food. This process
uses microwave radiation from the electromagnetic spectrum to provide tasty and
nutritious food in a very short time.
In addition, it also
maintains the nutrients present in the food. Microwave ovens are used to heat
pre-cooked foods, a variety of foods. In addition, they are also used for rapid
heating of slowly prepared cooking items such as hot butter, fats, and
chocolate.
The materials in
which water is present in the microwave oven quickly absorb the microwave
energy, which is later converted into heat. A microwave oven cooks food six
times faster than a traditional oven. Microwave ovens save a lot of energy due
to their quick cooking.
Tappan first launched the microwave for home use in the year
1955, while the microwave oven was first introduced by Amana Corporation in the
year 1967.
Microwaves are a form of electromagnetic wave whose wavelengths
range from 1 meter to 1 millimeter, with their frequencies being 300 MHz (100
cm) and 300 GHz (0.1 cm). Microwave signals always propagate in straight lines
and are rarely affected by the troposphere. They are not refracted or reflected
from the ionized regions in the upper atmosphere.
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| Fig 1.2 Microwave Structure |
Types of
microwave ovens.
If you search the
market, there are 3 types of microwave ovens. It would be
better to write about them. Let me add a video for you guys. By watching the
video given below, you will understand how many types of ovens there are and
what you will be able to do with their help.
What are the Microwave oven
applications?
The discovery of
microwaves was a great boon for our civilization. because it is used in many
places all over the world. So let's learn more about these microwave
applications.
Microwaves are most usually use in point-to-point
communication links namely, wireless networks, microwave radio relay networks,
radar, satellite, and spacecraft communications.
These microwaves are extremely high-frequency
radio waves, produced by a series of transmitters.
These help the water and fat molecules vibrate, making the substance hot, and
therefore, microwave ovens are used to cook many types of food in microwaves.
Microwaves are also
used in mobile phones that are produced by small antennas. Microwaves are also
used in Wi-Fi.
Microwaves are also
used in fixed traffic speed cameras as well as a radar by many aircraft, ships,
and weather forecasters.
Microwaves are also
used in spacecraft communications, meaning they are used to transfer most of
the world's data, television, and telephone communications over long distances
between ground stations and communication satellites. Microwaves are also used
in microwave ovens and radar technology.
How does a microwave work?
Working
process for microwave ovens.
Many people use
microwave ovens in their homes, but there are very few people who have some
knowledge about the workings of microwave ovens, so let's learn about the
workings of microwave ovens:
The principle of the
microwave oven is based on microwave radiation. A microwave oven is made of an
aluminum metal box from which radiation cannot pass, and it uses a magnetron,
which is a microwave generator.
When a user switches
on a microwave oven to make food, this magnetron receives electricity from a
power outlet and converts it into high-powered radio waves.
This microwave oven
has a waveguide, a turntable, and a timer switch.
When food enters the
room and the timer is on, it sends a command to the magnetron to send the
microwave to the turntable, which results in it starting to spin. These
microwaves heat the food, which contains water molecules.
So when the oven is
on and these microwaves hit those water molecules, those water molecules start
to vibrate at a high speed, which creates heat. The turntable rotates inside
the oven and cooks the food slowly.
What happens if you put a mirror in the microwave?
Mirror for
Microwave Oven
A Microwave Oven
Mirror is very useful because it allows the user to see how the food is cooking
inside the microwave oven while also preventing microwaves from escaping. If
the mirror in your microwave oven is broken, you can easily replace it and use
a new one, but you may need the assistance of a qualified technician.
Microwave Oven Applications
Buying a microwave is not enough if you do not know about its
uses. Below I have tried to tell you about some uses for which you can use:-
- Reheating - Whereas it was
difficult to reheat in a traditional oven due to the risk of burning the
food. In such a situation, you can use a microwave oven to re-heat very
comfortably. In this, you just have to fill the food container in the
oven, and your food gets reheated in a few seconds.
Microwave
ovens are use to heat up food devoid of wet it and keeping it almost in its
original form. That's
why microwave ovens are used more in homes and bakery shops to heat different
pastries, cakes, and other food items.
- Baking - A microwave oven can
be used to bake cakes and bread. It is very easy to use, and very quickly
you can make cakes of delicious varieties. The cakes are equally soft and
excellent to consume.
- To defrost: A microwave oven is
used to defrost frozen vegetables and meats. Previously, they had to waste
a lot of washing, draining, and water. It is also very efficient because
it helps in maintaining the food in its original form and nutrients.
- For Roasting – You can roast
garlic, garlic bread, popcorns, etc. quickly using a microwave oven. The
process of roasting food is very common in India, and this is our
traditional method of Indian cooking.
- To do blanching: The blanching
done by microwave is much better than the traditional blanching methods.
This is because the nutritional value of fruits and vegetables is not
compromised, and it is also done in a very short time.
- Boiling and also
steaming—Boiling is a very important way of cooking food. A microwave
cooks food evenly in a matter of minutes, whereas traditional boiling
techniques waste a lot of energy and also take a lot of time. Apart
from this, steaming vegetables in it keeps the nutrients of the food and
the wastage is negligible.
- Retains nutritional
value—Nutrients are very important for food items because they provide us
with the right nutrition for the growth and development of our bodies. A
lot of nutrients in food are vanished in conventional processes. In contrast,
using a microwave oven helps to keep these vitamins and minerals in the
food.
A magnetron
tube is used in a microwave oven.
Radiation waves are
used in a microwave to heat the moisture in the food, which eventually cooks
it. However in a convection oven, a fan is used to heat the food, which
circulates the hot air around the food.
I hope that I have
given you complete information about what a microwave oven is and I hope you
people have understood the type of microwave oven.
If you have any
reservations about this article or believe it could be improved, please leave a
negative comment. From these thoughts of yours, we will get a chance to learn
something and improve something.
