OT: Microwaves

[MobNet Wolf]

I have wondered this for a few days.



How come you need to set the microwave for more time if you put more things in?



ie, 1 box of microchips is 2.15, while 2 boxes in together is 3.45



Why is this?



In the oven, it doenst affect it doenst matter how many chips etc you put in.



I know that microwaves dont generate heat themselves, they emit
microwaves which heat the water molecules in food, but you would still
expect the time to remain constant.

[paddingtonwolf]

that is the most biscuit barrel thread start ever.


Mobnet you are a loon.


May I recommend Physics A level followed by a degree. This subject could be your thesis.


smileys/smiley36.gif


I forgot one point - Microwave chips are rancid. They are the slaaaaaaggggggs of the chip world.Edited by: paddingtonwolf

[wwfc_till_death]

mobnet has been hacked by grinder smileys/smiley36.gif

[paddingtonwolf]

what a terrifying thought

[peckhamwolf]

you need to reinstall XP

[Guildford Wolf]

I know the answer but I'm not tellingsmileys/smiley17.gif

[MobNet Wolf]

I know the answer but I'm not tellingsmileys/smiley17.gif




go onsmileys/smiley2.gif

[Sparky]

Less space = more time. i'd rather eat my own hand than microchips. Oven chips, now there's some improved grub.

[Guildford Wolf]

Do physics A level and then a physics degree - i don't see why I should pay for that lot and then divulge it for freesmileys/smiley2.gif

[MobNet Wolf]

Less space = more time. i'd rather eat my own hand than
microchips. Oven chips, now there's some improved grub.



but what has less space got to do with it?



Im just thinking along the lines of heat (even though technically its
not heat) is the same no matter how many things are in there.

[R6 Wolf]

Do you have anythingwith the micro chips, or do you just have a micro chip buttie

[Guildford Wolf]

Im just thinking along the lines of heat (even though technically its
not heat) is the same no matter how many things are in there.You're getting there, how does a microwave actually *work*

[wwfc_till_death]

you need to reinstall XP


smileys/smiley36.gif

[MobNet Wolf]

Do you have anythingwith the micro chips, or do you just have a micro chip buttie



yeah i had a micro pizzasmileys/smiley36.gifsmileys/smiley36.gif

[Guests]

A high-voltage transformer along with a special diode and capacitor arrangement serve to increase the typical household voltage, of about 115 volts, to the shockingly high amount of approximately 3000 volts! While this powerful voltage would be quite unhealthy -- even deadly -- for humans, it is just what the magnetron tube needs to do its job -- that is, to dynamically convert the high voltage in to undulating waves of electromagnetic cooking energy.


Given that the voltage is constant during a given time period, this willl generate a constant number of these undulating waves.


The microwave energy is transmitted into a metal channel called a waveguide , which feeds the energy into the cooking area where it encounters the slowly revolving metal blades of the stirrer blade . Some models use a type of rotating antenna while others rotate the food through the waves of energy on a revolving carousel. In any case, the effect is to evenly disperse the microwave energy throughout all areas of the cooking compartment. Some waves go directly toward the food, others bounce off the metal walls and flooring; and, thanks to special metal screen, microwaves also reflect off the door. So, the microwave energy reaches all surfaces of the food from every direction.


When each wave collides with the food, in this case flacid chips, then each wave will be transformed (mainly) into heat. This heat raises the temperature of the soggy crap you are trying to cook. The amount of heat generated varies, but it averages itself out over time.


Consequently, you need more microwaves to raise the temperature of more food, and the only way to get moremicrowaves is to run the oven for longer.


The obvious question is why is the the time not doubled when the mass of the food is doubled. This can be explained by reduced wastage of microwaves (they have more chance of hitting the food while they have more energy) and also that the food is proximal to more hot food which transfers heat by means of conduction and convection to that adjacent to it.


Moxey Out!

[MobNet Wolf]

Im just thinking along the lines of heat (even though technically its
not heat) is the same no matter how many things are in there.You're getting there, how does a microwave actually *work*





it goes round and round and goes mmmmmmmmmmmmmmmmmmmmmsmileys/smiley2.gif

[theinvisibleman]

since when was this a physics forum? I freely admit I am a nerd but this is to much.