How does a Microwave work?

[rmorse]

I know it does something with the water molecules, but I dunno how exactly it works. Anyone know?

 

[Onion01]

The microwaves emitted by the magnetron tube cause molecules in the food to vibrate rapidly. The friction makes heat which then cooks the food.

 

[ewurm]

The radiation causes the water and other particles to move, creating heat

 

[rmorse]

=) thank you!


So its all molecules, not just water molecules....

 

[bigspizz]

Dielectric heating....

 

[Dan F]

=) thank you!


So its all molecules, not just water molecules....

Not all molecules are affected the same. An empty water glass doesn't get hot, tin foil practically explodes! Not sure of the physics...

 

[radioaktiv]

www.howstuffworks.com

 

[BIGgourami]

=) thank you!


So its all molecules, not just water molecules....

only fluids, mostly liquids, gasses aren't too effected

scince the most predominate liquid in your food is water.. it's a logical assertion to just say 'it heats the water'

 

[headbanger_jib]

just a word of caution here as onion has already explained the physics
never use metallic objects in a microwave oven
and careful while heating liquid items as usually they get superheated and while being superheated if any thing is added to the liquid it may cause some serious burns

 

[bigspizz]

just a word of caution here as onion has already explained the physics
never use metallic objects in a microwave oven
and careful while heating liquid items as usually they get superheated and while being superheated if any thing is added to the liquid it may cause some serious burns

Yes...This is true...Water can be heated hotter then a boil, without it boiling in a microwave....Instant coffee drinkers all have probably had at least burnt fingertips...I have seen water explode after being super heated...