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microwave uses an open loop system microwave oven that simply runs for a given time and then stops. It does not care if the food if OK, raw or burnt!
Every orange is a fruit, but not every fruit is an orange. A knife is a device, but it is not a machine.
A: It is a microwave oscillator device.
...The door? The refrigerator/freezer (though it requires a manual interface, in which you take the food out of the freezer and put it in the microwave by hand). Also, the buttons on a microwave might be considered an input device. There is no microwave input device in terms of home computers (with the possible exception of a hack that allowed you to control it via USB or something, but I've never heard of that being done). A cell phone or Blue Tooth device might be considered a "microwave device," or maybe a 3G or 4G device such as an adapter or hub. That frequency range of radio waves is considered microwave energy.
microwave tubes are sometime called as vaccum eletrpn device... that are used to generate or amplify microwave radio frequencies.
The main limitation of a sold state microwave device is its surroundings. The microwave tower needs to be tall enough to overcome trees and other objects getting in the way of transmission.
Another new approach is microwave hyperthermia , using a device called the Prostatron to deliver microwave energy to the prostate through a catheter.
Microwave, microphone.
pn diode
a simple machine is a mechanical device
The type of energy conversion for a microwave is the transformation of electrical energy into light energy. This device works by focusing microwave light on the food inside of it.
a device