So you buy

[Crickleymal]

Disagree there Abs, Black retains the heat no matter what, silver on the other hand will be cooler than black as the air passes over it.. So coolant there fore will be hotter I reckon in a black painted part as opposed to a silver painted part.

Put it simply (seeing as you're errrm .."Sunning yourself in a galaxy far far away") Put on a black T shirt and sit in the sun for a while.. measure your temp, then change to a silver top and watch what happens.. I'll bet your cooler..

Black is supposed to be a good radiator as well as an absorber. Hence black body radiation which I vaguely remember from my A level Physics. The absorbtion bit only comes into play when it's subject to sunlight (or possibly an infra red source), which it isn't. The main cooling effect, as others have said, is airflow so it makes not the slightest difference what colour it's painted.

 

[clk320x]

Hence black body radiation which I vaguely remember from my A level Physics

Do you remember Planck’s Law?

 

[Crickleymal]

Nope

 

[clk320x]

Nope

 

[wu56Shoozz]

Only if it refers to you Abs "Planks Law" fnar fnar..

 

[PobodY]

Yeah, I don't think that's the same "black radiation" although I'll admit that I'm not interested enough to look past Plank's constant for calculating wavelengths from energy (specifically atomic emission spectra in argon plasma).

 

[clk320x]

Yeah, I don't think that's the same "black radiation" although I'll admit that I'm not interested enough to look past Plank's constant for calculating wavelengths from energy (specifically atomic emission spectra in argon plasma).

I love physics too

 

[PobodY]

I love physics too

I'm Chemist. I can't stand Physicists...

Not actually true; you can't really do much plasma spectroscopy without a tame physicist to do the complex mathematics. They are an odd bunch though.