0
The cooking space in a microwave oven is a resonent cavity filled with a plain old radio signal at an incredible power level. Even though none of it is supposed to leak out of the cavity, it's still required to operate at its assigned frequency. The FCC has set aside a sliver of spectrum called the 'ISM' band, meaning "industrial, scientific, and medical", for use by these radio devices that don't care about interference from others of their kind because they're not used for communication. The band is near the frequency of 2.5 GHz (gigahertz), which has a wavelength of 12 centimeters (about 4.7 inches).
Just a few words about the power level inside the microwave oven:
Until a few years ago, there used to be a sliver of spectrum right near the ISM band that was used for microwave radio communication. The most common use for that band was for microwave links between a TV station and its transmitting tower ... to send the video and audio from the studio to the tower for broadcast. It was also used to send the on-the-spot news shots by microwave from the helicopter to the studio.
That kind of operation typically used a microwave transmitter with an output power somewhere between 1 watt and 5 watts, which is plenty of power to carry a clean, solid, noise-free microwave signal anywhere it needs to go.
Actually, when you do the math, it turns out that with the antennas and receivers available today, a microwave link can deliver data, voice, or video something like 2,000 miles, with one watt (+30 dBm) of power coming out of the transmitter. Hold that thought ... 1 watt of microwave power.
The microwave oven in your kitchen most likely shoots 1,000 to 2,000 watts of "cooking power" into the little cubby where you put the soup bowl.
Now you know why it's so important to have the door closed any time the microwave is running, and so important to make sure the door is never damaged. It's really important to have a good RF seal, so none of that radio power leaks out. That would be dangerous, and you really have no need for a weather-radar in your kitchen.
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
What type of rays do cellphones and ovens use?
They use electromagnetic waves. cellphones use radio waves while electric and microwave ovens use infrared and/or microwaves
Why do radio waves have the least amount of energy of all electromagnetic wave lengths?
Radio waves are the longest of the electromagnetic waves. Longer waves have less energy in them than shortwaves do. Some of the really short EM waves are so energetic that you can use them to cook food. (Microwave ovens).
What waves do microwave ovens use?
Microwave ovens cook with several hundred watts of radio waves at a frequency at or near 2.450 GHz (2,450 MHz) / wavelength = 12 cm.
What part of the electromagnetic spectrum is used in ovens?
In a microwave oven, we find that microwave energy (from the microwave portion of the electromagnetic spectrum) are used. In a conventional oven, gas or electricity is used to create infrared heat, so we find infrared radiation (from the infrared portion of the electromagnetic spectrum, which is just below the visible light or optical portion) used there. If the oven happens to be a combination microwave and conventional, we'll find both types of electromagnetic waves generated for use inside.
Is there any radioactive material in microwave ovens?
There are no radioactive materials in microwave ovens: they use microwaves to cook food and heat liquids.
Do microwave ovens use electromagnetic radiation?
Yes, microwave ovens use electromagnetic radiation.
What type of rays do cellphones and ovens use?
They use electromagnetic waves. cellphones use radio waves while electric and microwave ovens use infrared and/or microwaves
Why do radio waves have the least amount of energy of all electromagnetic wave lengths?
Radio waves are the longest of the electromagnetic waves. Longer waves have less energy in them than shortwaves do. Some of the really short EM waves are so energetic that you can use them to cook food. (Microwave ovens).
What waves do microwave ovens use?
Microwave ovens cook with several hundred watts of radio waves at a frequency at or near 2.450 GHz (2,450 MHz) / wavelength = 12 cm.
What kind of waves does WiFi use?
WiFi uses electromagnetic waves in the microwave band, around 2.4 GHz or 5 GHz.
What part of the electromagnetic spectrum is used in ovens?
In a microwave oven, we find that microwave energy (from the microwave portion of the electromagnetic spectrum) are used. In a conventional oven, gas or electricity is used to create infrared heat, so we find infrared radiation (from the infrared portion of the electromagnetic spectrum, which is just below the visible light or optical portion) used there. If the oven happens to be a combination microwave and conventional, we'll find both types of electromagnetic waves generated for use inside.
What waves do telephones use?
Mobile phones use microwaves - similar to those used in microwave ovens (but at much lower power !)
What is the electromagnetic waves used in ovens and cell phone communications called?
Cellphones and telephones use telecommunication waves to send a message or call etc.
Many people use microwave ovens to cook their food. Which option is best described as an engineering endeavor related to microwave ovens?
Researching the way people use microwave ovens to determine how to improve their design
Is there any radioactive material in microwave ovens?
There are no radioactive materials in microwave ovens: they use microwaves to cook food and heat liquids.
What humans use radio waves?
Radio waves are used to transmit signals from a radio station, and you can receive the signals with a radio, and hear them as sound such as speech or music. The long wavelength of radio waves makes them a suitable medium for transmitting over a large range. it is also use in agriculture...... it is used to diagnose different diseases
Is the Panasonic Energy Star approved?
No, this microwave is not energy star approved. In fact, Energy Star does not currently approve/label ANY microwave ovens. However, most microwave ovens of the same size/wattage use comparable amounts of energy, and microwave ovens use substantially less energy than conventional ovens.
