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What are examples conduction convection and radiation?
example of conduction is heating a metal rod. the heat transmits without the movement of particles. convection is heating water. example of radiation is the heat received by sun. in this case, heat travels through vacuum WITHOUT heating the space between the sun and the Earth.
What are some features of cheap microwave ovens?
Some features of cheap microwave ovens are that they can cook things at very high temperatures and some newer microwave ovens even have a convection feaure on them.
How is matter heated by conduction convection radiation?
Heating by conduction takes place when two objects are touching, and heat flows from the hotter object to the cooler object. Heating by convection takes place when a hotter substance (such as air) expands and becomes less dense than the surrounding cooler substance, and therefore rises; the rising hot substance can then come into contact with something and heat it. Heating by radiation takes place by means of various types of electromagnetic radiation which transfer energy and can heat things up; sunlight is an example, which warms things up, or a microwave oven which is designed to rapidly heat water or anything that contains water.
What are the advantages and disadvantages of microwave radiation for heating a room?
The advantages and disadvantages of microwave radiation is that it is extremely harmful to humans and living things in general however it is very useful.
What is non example conduction?
Adhesion is a non example
What is the use for microwaves?
Communications, such as cell phones and sattelites. Microwave ovens, the best invention ever, especially if you are a bachelor :D Detection of speed, that thingy that the cops you use to clock your speed for example
What 3 things set convection currents in motion?
The three main factors that are responsible for setting convection currents in motion are the cooling and heating of fluid, any changes to their density and the force of gravity. These factors combine to set the currents in motion.
What is one safety risk involved with a microwave oven?
Well, it could be many things. Some people say that if you use plastic in a microwave oven could be bad. Some how the plastic will get into whatever you are heating up. There is also the radiation it uses. So, it could be many different things.
Can the convection oven microwave serve as a second oven?
== Why wouldn't the microwave oven part of a combination unit be as "good" as the microwave oven? They're essentially the same. A convection oven has a fan inside that circulates hot air in the oven around inside the cooking space when the "oven" part is in use. This "evens" the heat and promotes cooking efficiency and adds a bit of speed to the processs. But look at the microwave oven. A microwave oven has air blown through the cavity (the cooking space) by a fan when the unit is running. In this light, the ovens may be more similar than they are different. The air blown through the cavity is being forced through the cooling elements of the magnetron, the microwave generating device, and it enters the chamber already preheated. But the convection oven circulates hot air continuously, and this is an advantage. Microwave ovens work by adding energy to the hydrogen-oxygen bonds of water molecules inside food. This translates into an increase of the thermal or heat energy in the water. Because water molecules are the most affected by this method of heat-radiation cooking, it is a good idea to add a little water to your left-overs if they're a little on the dry side before re-warming them in the oven.This is a type of oven that uses a fan to circulate hot air around the object in the oven. This method reduces overall cooking time. The question asked if the microwave part of a microwave-convection oven was as good as a microwave-only unit. Yes, it is. They are the same thing. It's just that the microwave oven in a convection-microwave oven is built into a convection oven. It is unfair (and incorrect) to say that the convection-microwave oven is more efficient than a microwave oven when the performance of the two microwave ovens is compared. Certainly the combination unit has more features than the stand alone unit. It is more flexible; it has extended application and cooking "power" in its ability to prepare food. But the microwave portion of the combination unit is no better or worse than a conventional microwave oven.
Was the microwave oven successful at first?
When the microwave oven was first invented, it was not as successful as it is today. It took a lot of work to get it to where it would work properly in heating things. A lot of the problems at first included getting the wiring right, and evenly cooking whatever was in it.
What kind of oven cooks things particularly fast?
The Sharp R1870 with 850 watts cooks very fast.
Is there any radiation from the mobile tower which will affect the human lives?
Basically no. Microwave radiation only has the effect of heating things up (think of the microwave in your kitchen). There has been some debate whether this could heat up your brain and what effects it would have, but it has generally found to have little or no effect.
