DIYbanter - View Single Post - Conduction, Radiation, and Convection? Is that all there is?

krw

In article .com,
says...

Keith Williams wrote:
In article ,
says...
In high school physics, the three methods of heat dispersal were
presented as conduction, radiation, and convection?

Is that all there is? Is diffusion a fourth or is it subsumed by
convection?

I'd say conduction, rather then convection. Heat is transfered by
the molecules bouncing off each other = conduction.

depends what's diffusing. If it's just the heat, that's conduction. if
it's hot molecules diffusing, that's convection.

I disagree. How do you track which molecule is which? Convection
would only allow hotter molecules to rise (and colder sink).
Diffusion would allow the reverse too. As such, diffusion may be a
fourth mechanism but it's not likely to be significant as the
molecules transfer heat by conduction to each other.

--
Keith