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Microwave Oven vs. Cell Phone which one wins now
Author : sudha
Category : General Topics
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Microwave Oven vs. Cell Phone, Advantages and disadvantages of cell phones, Micro oven, Microwave oven, Masonry oven, Microwave Oven vs. Cell Phone which one wins now

Microwave Oven vs. Cell Phone which one wins now

Microwave Oven vs. Cell Phone
If the EM waves emitted by a cell phone and a microwave oven have similar frequencies, what does it mean that the waves emitted by the oven contain more energy? I believe that a microwave oven generates about 500 watts, whereas a cell phone generates only about 2 watts. What exactly does that mean? Since the wave frequencies are similar, does this mean that the oven produces waves with greater amplitude? I understand that the waves generated by the oven are amplified inside the oven itself, but I`m trying to understand what makes the waves themselves different to begin with.

What Is Cell Phone?
A mobile phone allows calls into the public switched telephone system over a radio link. Early mobile phones were usually bulky and permanently installed in vehicles; they provided limited service because only a few frequencies were available for a geographic area. Modern cellular "cell" phones or hand phones make use of the cellular network concept, where frequencies are re-used repeatedly within a city area, allowing many more users to share access to the radio bandwidth. A mobile phone allows calls to be placed over a wide geographic area; generally the user is a subscriber to the phone service and does not own the base station. By contrast, a cordless telephone is used only within the range of a single, private base station.

A mobile phone can make and receive telephone calls to and from the public telephone network which includes other mobiles and fixed-line phones across the world. It does this by connecting to a cellular network provided by a mobile network operator.

In addition to telephony, modern mobile phones also support a wide variety of other services such as text messaging, MMS, email, Internet access, short-range wireless communications (infrared, Bluetooth), business applications, gaming and photography. Mobile phones that offer these more general computing capabilities are referred to as smartphones.

The first hand-held mobile phone was demonstrated by Dr Martin Cooper of Motorola in 1973, using a handset weighing 2 1/2 lbs (about 1 kg). In 1983, the DynaTAC 8000x was the first to be commercially available. In the twenty years from 1990 to 2010, worldwide mobile phone subscriptions grew from 12.4 million to over 4.6 billion, penetrating the developing economies and reaching the bottom of the economic pyramid.

Has it happened to you that sometimes you go out but forgot your cell phone at home and so you’re not feeling complete. Theres a feeling somewhere inside that you’re missing something, a sense of insecurity sometimes prevails… welcome to the world of cell phone addiction!

Cell phones are having a great influence in our live and are very convenient to keep with us. Cell phones are a faster and more effective way to transfer information. Indeed, it is a resource that gives its user’s great advantages.

They say, if something is of great utility (usage, etc), it will surely have its own problems as well; cell phones are no exception.

In earlier times cell-phone used to be a craze, symbol of money and success but nowadays even kids find it a neccessity of life.

I would want to list some quick good and bad things about a typical cell phone. The list is not typical to any phone, just a generalization.

Advantages :
The more you talk, the more you know how to talk and the better your communication skills become. This is applicable if you’re a sensible person and keep note of your interacting habits over the phone. It can be a communication tutorial!
    Nothing more than a cell phone comes to great help in emergency. You are driving by the freeway and the vehicle jams and cell phone comes to your rescue. You are stuck in a lone place, again call somebody and ask for directions.
    Parents can be a little less worried about their kids by being in constant touch with them.
    If you’re a net-savvy, you can have Internet handy all the time and anywhere the signal of your cell phone provider can reach.
    Trendy and stylish cell phones can be used as a bait to receive attention. It can be part of fashion and styling.
    From the industy and economy point of view, cell phone companies (communication industry) is florishing with market capital in billions. This is a good thing for the economy to be smooth and healthy.
    Companies find it yet another medium to advertise their products; so another medium to reach the consumers.
    Nowadays, cell phones are not just phone calls; they’re about messaging, vidoe, songs, games, alarm clock, notes, calendar, reminder, etc. So one equipment, lots’ of uses!
    Although cell phone use can be dangerous while driving but sometimes it can be a time-saver - you are driving and simultanesouly discussing some urgent matter as well. A sensible and only urgent usage during driving can be a great help at times.

Dis-advantages :

    Some people (especially teens) get so much addicted to cell phones for talking, video, messaging, games, etc that they forget the real purpose of the phone and waste large part of their time in unnecessary interaction over their cell phones.
    Nothing more can be a distraction for a teached in the classroom, when a student’s phone rings. Cell phones are increasingly becoming a problem for the schools during classroom hours and are becoming a means of cheating during examinations and other kinds of ability tests. All this is really bad and does hurt the future of the student, who doesn’t realize that he/she is him/her-self responsible for it.
    Health of those living in the vicinity of cell phone towers is becoming a growing concern. Towers result into an area with concrete development along with destruction of natural features (vegetation etc) around the place. The towers also emit strong electromagnetic signals, which can be health hazard for those living nearby and who are getting exposed to strong radiations continuously during a good span of their lives.
   While remaining in touch is good thing but sometimes it becomes annoying to have to deal with continuous incoming phone calls. You are on a vacation and your boss calls up, how does that sound!
   Cell phone monthly bills are usually more than a landline bill. Sometimes, we may not require to have a cell phone but we still buy one and start paying monthly bills; so it increases our monthly/recurring expenses.
    Use of hands-free (wired/blue-tooth) can at times pass on loud sounds to our ears which can result in weakening of ear-drums. Nowadays, one can download lot’s of songs, so keeping the hands-free glued inside your ears for long hours can really affect the sensitivity of ears in the long run of life.
   There have been cases of cell phone blasts, due to the excessive heating up of it’s battery. This can be a fatal issue; although rare.
    No joke, the surface of a cell phone has millions of bacteria and virus on it and that can be a strong reason of immediate skin problem on face or can result into other internal infections wherein the microbes creep inside the body through mouth or other openings.
    Some use the keypad excessively; due to size restrictions the buttons and keypad of the cell phone are not natural for human hands; so excessive and prolonged typing can be an issue for fingers and finger joints.
    The continuous exposure of signal to and from our cell phone can be a cancer concern, although to a meagre amount- research is still going on. However, the mobile phone industry has long resisted any suggestion of a link to cancer, though it accepts that mobile phone radiation does affect the electrical activity in the brain.
    The battery parts and other electonic parts of a cell phone can be environmental hazard if not disposed off properly through approved means.
      A cell phone can be helpful while driving and talking in case of urgent matters but increasingly it is becoming cause of accidents because it deviates the attention of a driver; human brain can do only one thing at a time (however small span of time it may be).
     It can be a big time distraction and nuisance in calm and silent places like libraries, cinemas, restaruants, etc. Some cell phone users lose the sense of deciding when and where they can talk on the cell phone and where they can’t, without slightest consideration for the fellow beings around.
     The mobile phone advertisements through messages are becoming a pain for the cell phone users.
    Your SIM can be exploited as tracking device and if youre an important person then that can be a big concern for you.

Having said all about cell phones, I think they are one of the biggest boons humanity ever had. If used properly and sensibly, cell phone can be a wonderful piece of utility in life and most of its disadvantages will simply be insignificant.

What is Oven?
An oven is a thermally insulated chamber used for the heating, baking or drying of a substance.It is most commonly used for cooking. Kilns, and furnaces are special-purpose ovens. The first being used mainly for the fabrication of pottery and the second being used for forging.
History

The earliest ovens were found in Central Europe around 29,000 BC used as roasting and boiling pits located within a yurt structure. They were used to cook mammoth.In Ukraine from 20,000 BC they used pits with hot coals covered in ashes. The food was wrapped in leaves and set on top, then covered with earth. In camps found in Mezhirich, each mammoth bone house had a hearth used for heating and cooking.

Ovens have been used since prehistoric times by cultures who lived in the Indus Valley and pre-dynastic Egypt.Settlements across the Indus Valley had an oven within each mud-brick house by 3200 BC. As for the use of the oven in each respective culture, people in the Indus Valley used them as the hardened mud ovens were found in almost every household. The obvious explanation for the popular use of the oven in the homes would most likely involve its use for cooking food. However, baked brick sewers were also found at the Indus Valley civilization, which shows that they used the oven for masonry as well. Other ancient cultures that had use for the oven were pre-dynastic civilizations in Egypt. An early form of blacktopware was produced there which required a kiln. This is another hint showing how ovens were used from about 5000-4000 BC.

Culinary historians credit the Greeks for developing bread baking into an art. Front-loaded bread ovens were developed in ancient Greece. The Greeks created a wide variety of doughs, loaf shapes and styles of serving bread with other foods. Baking developed as a trade and profession as bread increasingly was prepared outside of the family home by specially trained workers to be sold to the public. This is one of the oldest forms of professional food processing.
Types of ovens

Earth oven:

An earth oven is a pit dug into the ground and then heated usually by rocks or smoldering debris. Historically these have been mainly used by many cultures for cooking. Cooking times are usually long, and the process is usually cooking through slow roasting. It is also important to note that earth ovens are amongst the most common things Archaeologist look for at an anthropological dig, as they are one of the key indicators of human civilization and static society.

Ceramic oven:

The ceramic oven is an oven constructed of clay or any other ceramic material and take many forms in many different cultures. The Indians refer to it as a tandoor, and use it for cooking. They can be dated back as far as 3000 BC as they have been argued to have their origins in the Indus Valley. Brick ovens are also another ceramic type oven. A culture most notable for the use of brick ovens is Italy and its intimate history with pizza. But its history goes even further dating back to Roman times when the brick oven was used not only for commercial use but household use as well.]

Gas oven:

One of the first recorded uses of a gas stove and oven referenced a dinner party in 1802 hosted by Zachaus Winzler at which all the food was prepared either on a gas stove or in its oven compartment. In 1834, British inventor James Sharp began to commercially produce gas ovens after installing one in his own house. In 1851, the Bower`s Registered Gas Stove was displayed at the Great Exhibition. This stove would set the standard and basis for the modern gas oven. Notable improvements to the gas stove since then have been the addition of the oven thermostat that assisted in temperature regulation; also an enamel coating was added to the production of gas stoves and ovens in order to help with easier cleaning.

Masonry oven:

Masonry ovens consist of a baking chamber made of fireproof brick, concrete, stone, or clay. Though traditionally wood-fired, coal-fired ovens were common in the 19th century, modern masonry ovens are often fired with natural gas or even electricity. Modern masonry ovens are closely associated with artisanal bread and pizza, but in the past they were used for any cooking task involving baking.

Microwave oven:

An oven that uses micro radiation waves as a source of heat in order to cook food as opposed to a fire source. Conceptualized in 1946, Dr. Perry Spencer allegedly discovered the heating properties of microwaves while studying the magnetron. By 1947, the first commercial microwave was in use in Boston, Mass.

Changes over time

During the Middle Ages, instead of earth and ceramic ovens, Europeans used fireplaces in conjunction with large cauldrons. These were similar to the Dutch oven. Following the Middle-Ages, ovens underwent many changes over time from wood, iron, coal, gas, and even electric. Each design had its own motivation and purpose. The wood burning stoves saw improvement through the addition of fire chambers that allowed better containment and release of smoke. Another recognizable oven would be the cast-iron stove. These were first used around the early 1700s when they themselves underwent several variations including the Stewart Oberlin iron stove that was smaller and had its own chimney. In the early part of the 19th century, coal ovens were developed. Its shape was cylindrical and was made of heavy cast-iron. The gas oven saw its first use as early as the beginning of the 19th century as well. Gas stoves became very common household ovens once gas lines were available in most houses and neighborhoods. James Sharp patented one of the first gas stoves in 1826. Other various improvements to the gas stove included the AGA cooker invented in 1922 by Gustaf Dalen. The first electric ovens were invented in the very late 19th century, however, like many electrical inventions destined for commercial use, mass ownership of electrical ovens could not be a reality until better and more efficient use of electricity was available.

More recently, ovens have become slightly more high-tech in terms of cooking strategy. The microwave as a cooking tool was discovered by Percy Spen

Cooking

In cooking, the conventional oven is a kitchen appliance and is used for roasting and heating. Food normally cooked in this manner includes meat, casseroles and baked goods such as bread, cake and other desserts. In modern times, the oven is used to cook and heat food in many households across the globe.

Modern ovens are fueled by gas or electricity. When an oven is contained in a complete stove, the fuel used for the oven may be the same as or different from the fuel used for the burners on top of the stove.

Ovens usually can use a variety of methods to cook. The most common may be to heat the oven from below. This is commonly used for baking and roasting. The oven may also be able to heat from the top to provide broiling. In order to provide faster, more-even cooking, convection ovens use a small fan to blow hot air around the cooking chamber. An oven may also provide an integrated rotisserie.

Ovens also vary in the way that they are controlled. The simplest ovens (for example, the AGA cooker) may not have any controls at all; the ovens simply run continuously at various temperatures. More conventional ovens have a simple thermostat which turns the oven on and off and selects the temperature at which it will operate. Set to the highest setting, this may also enable the broiler element. A timer may allow the oven to be turned on and off automatically at pre-set times. More sophisticated ovens may have complex, computer-based controls allowing a wide variety of operating modes and special features including the use of a temperature probe to automatically shut the oven off when the food is completely cooked to the desired degree.

Some ovens provide various aids to cleaning. Continuous cleaning ovens have the oven chamber coated with a catalytic surface that helps break down (oxidize) food splatters and spills over time. Self-cleaning ovens use pyrolytic decomposition (extreme heat) to oxidize dirt. Steam ovens may provide a wet-soak cycle to loosen dirt, allowing easier manual removal. In the absence of any special methods, chemical oven cleaners are sometimes used or just old-fashioned scrubbing.

Industrial, scientific, and artisanal use


Outside the culinary world, ovens are used for a number of purposes.

    A furnace can be used either to provide heat to a building or used to melt substances such as glass or metal for further processing. A blast furnace is a particular type of furnace generally associated with metal smelting (particularly steel manufacture) using refined coke or similar hot-burning substance as a fuel, with air pumped in under pressure to increase the temperature of the fire.
    A kiln is a high-temperature oven used in wood drying, ceramics and cement manufacture to convert mineral feedstock (in the form of clay or calcium or aluminum rocks) into a glassier, more solid form. In the case of ceramic kilns, a shaped clay object is the final result, while cement kilns produce a substance called clinker that is crushed to make the final cement product. (Certain types of drying ovens used in food manufacture, especially those used in malting, are also referred to as kilns.)
    An autoclave is an oven-like device with features similar to a pressure cooker that allows the heating of aqueous solutions to higher temperatures than waters boiling point in order to sterilize the contents of the autoclave.
    Industrial ovens are similar to their culinary equivalents and are used for a number of different applications that do not require the high temperatures of a kiln or furnace.

Suggestions:

EM waves emitted by a cell phone and a microwave oven have similar frequencies.
Means if you are cooking vegetables in microwave oven is nothing but you are cooking your brain at least some percentage per every day.
 
And recently I saw one experiment boiling a egg with two mobiles That is the better example for how we are boiling slowly our brain on daily basis because our brain cells and egg have some some similar properties. 
 
My sense is that olden days mobile is meant for Hai and bye, where as now a days the mobile phone became very necessarily  unnecessary thing for every movement for especially youth.
 
why the people dont understand that Cell phone is injurious to health.

 

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