Most people would think that microwaves use heat to warm up the food, but that isn't true. As you know almost every food has traces of water. What a microwave does is it send waves of electricity which "excites" the water inside the food. When water is "Excited" it produces heat which warms up the food. So basically the food warms it's self up. For example have you seen when lightining strikes a tree?. The tree sets on fire because the lightining " Excites " the water in the tree. So then the tree produces heat and sets it self on fire because it produced too much
Hope this helped
The microwaves are generally described as electromagnetic waves with frequencies that range about 300MHz to 300GHz. Because of their high frequencies, have relatively short wavelengths, hence the name is "micro"waves (wavelength= speed of light/frequency) which is speed of light=3x108.
A microwave oven is called a 'microwave' because that is the type of radio wave it uses to induce heat. An RF wave with a frequency between 300 MHz and 300 GHz is considered a microwave. Microwave ovens typically operate around 1-2 GHz.
It is always surprising as to why they are called micro waves when their frequency is in Giga range.
Its because, their wavelength is in micron range.
The beauty of microwaves is amazing. It uses radiation and convection(some) to heat up the substance you are heating. I recommend not going near the microwave as it is doing its heating process, too much radiation= not a healthy person
Complex answer. Simply put, electrons are accelerated through a magnetic field. This causes them to run in a spiral course, where they meet a ring of resonant cavities' As the electron velocity is modulated by the cavity E fields, they bunch and excite the cavities.
It creates micro-waves (a long-wavelength low frequency elctro-magnetic wave very similar to radio waves). Those waves vibrate water molecules in the food you are cooking. The friction of the vibration creates heat which cooks your food. The need of water molecules to produce heat is why glass plates and anhydrous plastics can be used to cook food without melting--they don't contain water. Plastics that do contain water will melt into your food in the microwave.
there were made to help people reheat food and not turn on the stove and have to wait on it to heat up or burn and plus on the microwave you can put in the minutes you want it at
Their name describes their wavelengths on the order of millimetres or micrometres.
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A microwave oven is called a 'microwave' because that is the type of radio wave it uses to induce heat. An RF wave with a frequency between 300 MHz and 300 GHz is considered a microwave. Microwave ovens typically operate around 1-2 GHz. It is always surprising as to why they are called micro waves when their frequency is in Giga range. Its because, their wavelength is in micron range.
Electricity is converted into the electromagnetic wave called a microwave.
magnetron
The capacitor in a microwave oven, along with its associated high voltage diode, form what is called a voltage doubler to drive the magnetron.
The (electromagnetic ) radiation they emit is short or micro wavelength ( 2.45 GHz frequency) which causes resonance in water molecules, resulting in rapid heating.
it's called microwave in Urdu also
over the range microwave
A microwave oven is called a 'microwave' because that is the type of radio wave it uses to induce heat. An RF wave with a frequency between 300 MHz and 300 GHz is considered a microwave. Microwave ovens typically operate around 1-2 GHz. It is always surprising as to why they are called micro waves when their frequency is in Giga range. Its because, their wavelength is in micron range.
Electricity is converted into the electromagnetic wave called a microwave.
microwave tubes are sometime called as vaccum eletrpn device... that are used to generate or amplify microwave radio frequencies.
Another new approach is microwave hyperthermia , using a device called the Prostatron to deliver microwave energy to the prostate through a catheter.
magnetron
Yes, items in a microwave oven can be said to absorb microwaves. The microwave energy causes what is called dielectric heating, and this activity takes energy from the microwave beam.
A microwave is a form of electromagnetic radiation in the frequency range between 300 MHz (or 0.3 GHz) and 300 GHz. A microwave is also the "shorthand" name we give to a common appliance called a microwave oven. Are they the same?Whether or not microwave ovens are the same as microwaves depends on the application of the term. Microwave ovens are called that because they contain a microwave generating device and direct the radiated electromagnetic energy (the microwaves themselves) into a cooking space (called a cavity) to heat drinks or food, or even to cook things.Say an appliance salesman is saying to his/her junior helpers, "Arrange the microwaves on the shelves." This refers to the microwave ovens. It's not about electromagnetic energy called microwaves.Take the case of an electronics teacher saying to his/her students, "The microwaves are reflected off the metal screen that is used in the construction of the dish." This does notrefer to microwave ovens, but the electromagnetic energy itself.
no
The capacitor in a microwave oven, along with its associated high voltage diode, form what is called a voltage doubler to drive the magnetron.
Things like hot pockets and microwave pizzas use what is called a susceptor (usually in the form of a sleeve or container). These susceptors convert microwave energy into heat, which help crisp up food in the microwave, countering the effects of sogginess that is synonymous with microwave ovens. For more information: http://en.wikipedia.org/wiki/Susceptor