Naked Science Forum

Non Life Sciences => Physics, Astronomy & Cosmology => Topic started by: Nicolas Campbell on 27/03/2011 20:30:02

Title: How does heat move during radiation, convection, and conduction?
Post by: Nicolas Campbell on 27/03/2011 20:30:02

Nicolas Campbell asked the Naked Scientists:
   
How does heat move during radiation, convection, and conduction?

What do you think?

Title: How does heat move during radiation, convection, and conduction?
Post by: CZARCAR on 27/03/2011 22:25:58

radiant=like a  flashlight & unaffected by gravity
convection= hot "air" rises, relative & dependent on cold air to displace it?
conduction= physical contact of cold to hot material

Title: How does heat move during radiation, convection, and conduction?
Post by: JMLCarter on 27/03/2011 22:52:52

Agreed except for the unexpected and ad-hoc shot at general relativity?? Why state that light is unaffected by gravity?

Radiative heat includes transfer by light (including microwaves) and other particles.

Title: How does heat move during radiation, convection, and conduction?
Post by: CZARCAR on 27/03/2011 23:00:54

Quote from: JMLCarter on 27/03/2011 22:52:52

Agreed except for the unexpected and ad-hoc shot at general relativity?? Why state that light is unaffected by gravity?

Radiative heat includes transfer by light (including microwaves) and other particles.

radiant heat can travel down as well as up? unlike convective & conductive