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Posted: 6/5/2008 4:02:18 PM EST
please. google, not helpful.

I just want to understand
Link Posted: 6/5/2008 4:02:55 PM EST
in regards to?
Link Posted: 6/5/2008 4:03:16 PM EST
HOW IS GOOGLE NOT HELPFUL GO GET A DAMN DICTIONARY.



Link Posted: 6/5/2008 4:08:47 PM EST
[Last Edit: 6/5/2008 4:25:34 PM EST by Mike_Mills]
Conduction refers to the transport through the bulk of a material.

It is described by Newton's Law of Conduction:

delta Q = k*(T2-T1). Transport (delta Q) is linealy proportional to the differential in potential (T2-T1).

Convection refers to transport from the surface of the material.

(need time to prepare a simple formula describing convection)

Induction refers to the (non-contact) transport via a magnetic field.

It is described by:

L*(d2q/dt2) = (V2 - V1) or L*(dI/dt) = delta V The time rate of change of the rate of transport (the rate at which the transport is accellerating, d2I/dt2) is proportional to the potential difference (V2-V1).
Link Posted: 6/5/2008 4:09:03 PM EST

Originally Posted By Journy:
HOW IS GOOGLE NOT HELPFUL GO GET A DAMN DICTIONARY.





m-w.com
Link Posted: 6/5/2008 4:09:33 PM EST
Conduction is contact transfer of heat between two objects or through an object

Put a penny on the griddle, it gets hot from contact. Heat the end of a copper wire. The heat travels down the wire. This too is conduction. Copper is a good conductor, both thermal and electrical. It works in the similar fashion.

Convection. Hot air rises because it has lower density. The heat rises in a room, making the ceiling hotter than the floor.

Induction is the process where energy is transfered via magnetic fields which alternate. In alternating, these magnetic/radio fields induce electric currents in conductors. The conductors will get warm from electrical resistance.

Putting a CD in the microwave will induce currents in the aluminzation. These currents are more than the aluminum can handle and it will arc and spark until the surface is broken up to where no more induction is possible.
Link Posted: 6/5/2008 4:17:10 PM EST

Originally Posted By Keith_J:
Conduction is contact transfer of heat between two objects or through an object

Put a penny on the griddle, it gets hot from contact. Heat the end of a copper wire. The heat travels down the wire. This too is conduction. Copper is a good conductor, both thermal and electrical. It works in the similar fashion.

Convection. Hot air rises because it has lower density. The heat rises in a room, making the ceiling hotter than the floor.

Induction is the process where energy is transfered via magnetic fields which alternate. In alternating, these magnetic/radio fields induce electric currents in conductors. The conductors will get warm from electrical resistance.

Putting a CD in the microwave will induce currents in the aluminzation. These currents are more than the aluminum can handle and it will arc and spark until the surface is broken up to where no more induction is possible.


thank you very much. I appreciate your time.

thread over.
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