I'm talking about a busbar or a cable. They're with the engine part. I'm not sure you're thinking this through. You can't expect a cable to feel -57C. Convective is a natural way of cooling at a sea level. At higher altitudes around 35000 feet, Radiation looks like the only way. AND, I don't get...
I meant current, so do electrons. DC source will pomp the electrons, but electrons' speed must be variable depends on amount of oxygen in my opinion. Low oxygen, low speed of act of the electrons that's what I thought.
That's okay! Yes, about the heat dissipation differences for the busbar once it is oxidized, and relationship from over the altitude difference. Do you think I'm wrong about what I've written in the previous post?
Well I must confess you made me smile. Any way, I think effects and conditions are quite different than you thought. Let me say what I think, If it goes up to the thousand feets, it means less oxygen, and air density is lower. Lower air density should mean slower movement in copper. Assume it's...
"The surface of copper naturally oxidises, forming a thin hard layer on the surface which normally prevents further oxidation. " I've seen this in a book, higher level oxygen on busbar, means lower the heat and get away with ease, Doesn't it? So, Can I say a thin hard layer musn't be used?