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The common, ubiquitous microwave oven operates in the "ISM" radio band of 2.45-2.5 GHz, corresponding to a wavelength of something like 12 centimeters. You could use somewhat longer or shorter wavelengths to cook food, but this is the frequency band dedicated to that service. The 2.5 GHz band was the desirable choice, because it is a wavelength efficiently absorbed by the moisture in the food. The shape and size of the 'cavity' in the microwave oven ... the box where you put the food to be cooked ... is closely related to the wavelength of the RF energy used, in order to assure that the RF energy stays in the box and gets absorbed into the food, and is not reflected back into the device that generates it.
What else can I help you with?
Could radio waves be used to cook and why?
Radio waves are used to cook in millions of kitchens every day. They're the carrier of the energy that fills the so-called "microwave" oven.
What has longer wavelength radio waves or visible light?
Neither is nesesarily longer a wave can go on forever. Visible light is more reflective than infared light so it will last longer. If you are talking about wavelength, infared lights wavelength is longer.
What is the difference between infrared waves and microwaves?
Microwaves are electromagnetic waves that occur on the EMR (Electromagnetic Radiation) scale above radio/tv waves and below infrared and visible light waves. They are used in cooking devices (microwave oven) and as carrier waves for cell phone and other communication devices. In other words, a "microwave" is a type of electromagnetic radiation (like visible light waves, tv waves and so on), and a "microwave oven" is a cooking device that uses microwaves to heat foods by stimulation of the water molecule. See the link below and read the answer posted to the related question for more.
What are some natural sources of radio waves?
We generally think of radio waves (radio electromagnetic radiation) as those frequencies of electromagnetic (EM) radiation that fall within a band of frequencies below those of light. These include microwave bands, on which satellites communicate and cell phone operate, as well as the familiar microwave oven. Radar also operates in this band. Below that we find television signals, as well as some two-way radio signals. Other forms of communications radio signals (like amateur or "ham" radio) as well as broadcast radio operate below the television bands. By considering the types of equipment mentioned above, it is possible to make a list of some sources of radio electromagnetic radiation.
Why can't radio waves pass through the ionosphere?
Yes, they can in high levels. Science says radiowaves can vibrate our skin and if strong enough can actually massage or promote bloodflow. Blood is the vessel and/or vehical for oxygen transport. A high enough oxygen level is not only dangerous but deadly.
Which kind of oven operates on short electromagnetic waves?
Microwave oven
What oven works on short electric waves?
Microwaves. actually these are Microwave frequencies rather than Short Wave in, say the amateur radio sense.
Which have longer wavelength radio waves or light waves?
Radio waves have a far longer wavelength than visible light. The radio waves that do the cooking in your microwave oven are as long as roughly 310,000 waves of blue light placed end-to-end. The radio waves transmitted by an AM station at 1400kHz on your AM dial are roughly 550 billion times as long as blue-light waves.
Could radio waves be used to cook and why?
Radio waves are used to cook in millions of kitchens every day. They're the carrier of the energy that fills the so-called "microwave" oven.
How does a microwave produce micro waves?
Same way a radio transmitter produces radio waves. The device is called a magnetron, which is sometimes used as a pars pro toto for the whole microwave oven.
What are waves used in radar?
Longitudinal (radio) waves are the type of waves used in radar, and they are microwave frequency waves, which are high frequency and have short wavelengths.A link is provided to the Wikipedia article on radar. You can surf on over and check it out. A link is also provided to a related question.
Difference between microwave oven grill and convection?
A microwave uses radio waves to heat food from the inside out, and a convection oven uses heat waves to cook food from the outside in. While they both cook food fairly quickly, the method of a convection oven is much more similar to a conventional oven.
What is an example of electromagnetic energy in the kitchen?
All types of radio waves are electromagnetic energy, and that includes microwaves from the microwave oven.
What type of waves of electomagnetic waves?
When you listen to the radio, watch TV, or cook dinner in a microwave oven, you are using electromagnetic waves. Radio waves, television waves, and microwaves are all types of electromagnetic waves. They differ from each other in wavelength. Wavelength is the distance between one wave crest to the next. For more info, click the link below.
How do microwave oven cook what is the nature of radiation in microwave ovens?
It is radio waves, at the frequency of 2.45 GHz, and very high power.
How is a microwave electromagnetic energy?
The device has a transformer inside - which amplifies the mains power. The power is fed to an internal 'transmitter' - which sends high-frequency radio waves 'bouncing' around the oven's interior. The radio waves are part of the electromagnetic spectrum.
What is the type of wave that can transmit your voice through a cell phone and cook your food in a oven?
This is called a microwave and falls between the visible waves at the red end of the spectrum, and radio waves.
