Thursday, October 22, 2009
an example of radiation
Radiation can be used as well in the kitchen such as in microwave ovens where heat comes from “electromagnetic waves” released by the machine.
more about radiation
Radiation is the kind of heat transfer that occurs without the need of heating surrounding molecules but rather directly towards the solid object that stands in the way of the radiant energy.
Wednesday, October 21, 2009
an example of convection
differences and similarities between conduction and convection
Conduction refers to the transfer of heat energy through solids; convection on the other hand refers to the transfer of heat through liquids and gases. (differences)
Tuesday, October 20, 2009
the concept of conduction
In solid objects like a metal rod, when one end of which is heated, the heat is transferred from the area where the heat is applied to the area away from the source of heat through the movement of the molecules that make up that object.
an example of conduction
When toasting marshmallows on a camp fire where heat may be felt on the stick after a few minutes is an example of heat transfer by conduction.
Sunday, October 18, 2009
computers and conduction
conduction
Wednesday, October 14, 2009
heat transfer categories
Thursday, October 8, 2009
radiation properties
types of convective heat transfer
Tuesday, October 6, 2009
radiation
convective heat transfer
fundamental process of heat transfer
There are three fundamental processes by which heat is transferred. Fluids usually act differently with other matter on Earth. In this case, heat transfer between fluids hold separate process because of its property. This kind of heat transfer process is termed to as conduction. In conduction, the heat moves internally because the fluid does not flow. The atoms and molecules vibrate independently, thus, electrons carry heat fast. Metals for example are good conductors of heat because they contain free electrons that move randomly.