Microwaves are a form of electromagnetic radiation with wavelengths ranging from about one meter to one millimeter; with frequencies between 300 MHz (1 m) and 300 GHz (1 mm). Different sources define different frequency ranges as microwaves; the above broad definition includes both UHF and EHF (millimeter wave) bands. A more common definition in radio engineering is the range between 1 and 100 GHz (wavelengths between 0.3 m and 3 mm). In all cases, microwaves include the entire SHF band (3 to 30 GHz, or 10 to 1 cm) at minimum. Frequencies in the microwave range are often referred to by their IEEE radar band designations: S, C, X, Ku, K, or Ka band, or by similar NATO or EU designations.
The prefix micro- in microwave is not meant to suggest a wavelength in the micrometer range. Rather, it indicates that microwaves are "small" (having shorter wavelengths), compared to the radio waves used prior to microwave technology. The boundaries between far infrared, terahertz radiation, microwaves, and ultra-high-frequency radio waves are fairly arbitrary and are used variously between different fields of study.
Microwaves travel by line-of-sight; unlike lower frequency radio waves they do not diffract around hills, follow the earth's surface as ground waves, or reflect from the ionosphere, so terrestrial microwave communication links are limited by the visual horizon to about 40 miles (64 km). At the high end of the band they are absorbed by gases in the atmosphere, limiting practical communication distances to around a kilometer. Microwaves are widely used in modern technology, for example in point-to-point communication links, wireless networks, microwave radio relay networks, radar, satellite and spacecraft communication, medical diathermy and cancer treatment, remote sensing, radio astronomy, particle accelerators, spectroscopy, industrial heating, collision avoidance systems, garage door openers and keyless entry systems, and for cooking food in microwave ovens.

View More On Wikipedia.org
  1. Microwaveable Storage Containers

    Microwaveable Storage Containers

    Microwaveable Storage Containers
  2. Morning Glory

    Recipe Garlic Gold Dust

    Here is the thing. Its garlic gold dust. What you do is zap cloves of garlic (skin on) in the microwave for 1 minute 20 seconds. Times may vary according to your microwave so be prepared to sacrifice a few cloves. Take out and allow to cool for a few minutes. Slip off the skin. It should look...
  3. TastyReuben

    Microwaves - Love 'Em Or Hate 'Em

    Carried over from another topic, do you have/use a microwave? If so, how do you use it? If not, why not? As I mentioned in the other topic, I do have one, but's it's mainly to heat water, milk, or to melt butter or shortening. How about you?
  4. Morning Glory

    Recipe Cranberry & Clementine Sponge Pudding

    A few minutes in the making and you have a comforting and rather festive sponge pudding. Traditionally, a pudding like this would be steamed but the microwave works wonders here. Serve the puddings with cream or custard. You’ll need 2 dariole sized microwaveable moulds or one larger mould. You...
  5. A

    the crisper dish for microwave that does not exist...

    Hi there, I am an italian middle aged fat guy, so food and cooking are a huge part in my life :) My mother owns a microwave crisper dish, the one in the attached pictures, that works better than any other crisper dish i have found: when you use that dish food doesn't burn, is always crisp and...
  6. I

    Microwave Cake-making

    I may not yet qualify to post an image, though I am anxious to do so. At any rate, one of my favorite cakes from childhood was a Marble Cake my Mother made for me often. Around age 10, I succeeded in getting her to allow me to make one myself. Nowadays, in possession of her old recipe box...
  7. Morning Glory

    Recipe How to boil an egg in the microwave

    Thanks to @Elawin who discovered this link:Back to Basics: How to boil an egg in the microwave oven from the Microwave Technologies Association I was skeptical but thought I'd try it out. I was convinced it was impossible to boil eggs in a microwave! How wrong can I be? This is so easy and fast...
  8. SatNavSaysStraightOn

    Microwaving Bowls and Plates

    My hubby always serves food on a hot plate. It can be as little as a round of toast or even a hot milk, and I can guarantee you that the ceramic vessel containing the food/drink will be hot. If the oven has been on, then often he will use the oven to warm the plates, but when it is something...
  9. Morning Glory

    Recipe Easy Microwave Chocolate Fudge

    It doesn't get much easier than this. Just two ingredients for the fudge. The topping is up to you although I do think flakes of sea-salt really work well. I used pistachio nuts which I smashed up using a pestle and mortar and pressed into the surface of the fudge as well as sea-salt...
  10. Elawin

    Recipe Chocolate Mug Cake

    Serves: 1 Cooking time: 3 1/2 minutes Ingredients: 2 tbsp self-raising flour 2 tbsp caster sugar 1 tbsp cocoa 1 small egg 1 tbsp milk 1 tbsp sunflower oil To serve: Icing sugar, cream, ice cream, or natural yoghurt Method: Put dry ingredients into a large mug and mix well. Add the egg...
  11. Herbie

    Recipe Microwaved syrup pudding

    A microwaved syrup pudding is nothing compared to a proper syrup pudding. However, a microwaved pudding is good for a sugar hit :) Based on this recipe:https://www.bbcgoodfood.com/recipes/2205641/microwave-sponge-pudding 100g (vegan) Margarine 100g Granulated Sugar 100g (GF) SR Flour 2 Eggs...
  12. The Late Night Gourmet

    Reheating Brussel Sprouts in the Microwave

    I work in an office, and while I would happily use a stove, toaster oven, or oven, the only option I have here when I want to reheat food is a microwave. I'm well aware that some things just don't do well in the microwave, so I don't bother with most bread-related things like pizza. But, I've...
  13. GadgetGuy

    Magnetic Microwave Cover.

    Has anyone seen this yet? Its a microwave cover that stays in the microwave unless you have to wash it. Four magnets hold it to the microwave's ceiling for easy storage when not in use...
  14. Morning Glory

    Microwave magic?

    There has been some mention elsewhere on the forum about using microwaves (or in some cases not using them!). A lot of people who consider themselves serious about food scorn microwaves and state that they would never own or use one. There is a mythology that microwaves are only any good for...
  15. SatNavSaysStraightOn

    Cooking Corn on the Cob

    I want to thank the person who told us about a really easy way of cooking corn on the cob by actually putting the cob into the microwave exactly as you buy it, without peeling it or pulling off all those stringy bits. It has completely changed the way I cook corn on the cob and made it so much...
  16. SatNavSaysStraightOn

    Microwaves: Are you a 99 seconds or 1 minute 40 person?

    Microwaves. Last night, my husband made me a hot milk. He brought it over wanting to know if it was warm enough, so I naturally asked him how long it had had in the microwave. I usually give it 1 minute 45 seconds. Anything passed 1 minute 50 seconds on full power and it will boil over which...
  17. Elawin

    Recipe Syrup sponge in the microwave

    This light, fluffy steamed pudding cooks in just four minutes in the microwave. Serve it with golden syrup, or jam and custard. Preparation time: less than 30 mins Cooking time: less than 10 mins Serves: 4-6 Ingredients: 125 g/4 oz butter, melted, plus...
  18. alexander

    Using the Microwave

    We live in a small London flat with a small kitchen but it does have a built in microwave. I must say that I don't use it much. I mostly use it to heat up left overs or to cook a ready meal. I was wondering if you guys have some good ideas of how to use it more creatively. And also how much do...
Top Bottom