Heat Conduction...?

Question

I need to know about heat conduction. Like, the different types of heat conduction. Nothing specific. Just some info would be nice :-).
Thanks!

Answer 1

Heat conduction happens mainly in solids where the particles are close to each other. Electrons in metals also help to conduct heat faster. Hence metals conduct better than non-metals.
The particles in the hot end kind of nudge the particles in the cooler neighboring areas and heat is then transferred from the hot end to the cold end. Hence heat conduction does not effectively happen in stationary liquids and gases.
In the liquids and gases, heat TRANSFER is mainly brought about by convection. The main consideration of convection happening is the appreciable change(decrease) in the density of the heated portion of the liquid or gas.
Hence hot liquid and hot gas rise, while cooler liquid and cooler gas sink as the former has lower density than the latter.

Answer 2

Heat conductivity: The material with the highest heat conductivity listed by my source is purified synthetic diamond with a score of over 2000 W/(m*K). The lowest in the list is silica with .003. Water scores 0.6. Soil is just a bit higher and fibre-reinforced plastic is just below in the list. So I'd say water is medium-low, a slight insulator of heat.

Some links:
http://en.wikipedia.org/wiki/Thermal_conductivity
http://en.wikipedia.org/wiki/Heat_conduction

Answer 3

Glass remains a extra effectual thermal conductor than air, yet mostly its because of the specific warmth of the glass. (the quantity of potential it takes to heat the glass by using a defined temperature distinction) Greenhouses get warm because of the fact solar passes by using the glass however the warmth does not pass back out by using the glass. Glass is a undesirable conductor of heat, thermal conductivity of one million to one million.5 W/(m ok), in the comparable selection as many plastics. chrome steel is 17 W/(m ok), aluminum is 240 w/(m ok), copper is 4 hundred W/(m ok), and air is 0.000002 W/(m ok)