2007-06-17 06:27:06 · 19 answers · asked by nick 1 in Science & Mathematics ➔ Physics
Black.
2007-06-17 06:28:48 · answer #1 · answered by Christina 5 · 3⤊ 0⤋
The sun radiates heat. A white surface is reflecting that heat and is therefore the best radiator...In the home, I've never seen black central heating radiators.
2007-06-17 13:04:34 · answer #2 · answered by Norrie 7 · 0⤊ 0⤋
the heat transfer tell us that the black colour is the best which is the radiation factor is =1
2007-06-17 07:10:32 · answer #3 · answered by satfuhrer 1 · 0⤊ 0⤋
Dark rough surfaces both absorb and emit heat radiation best, depending on the temp diff between ambient being +/-. Dark surfaces, being microscopically 'rough' have a larger effective surface area for emission- Energy emitted per unit time is proportional to the surface area and fourth power of the temp difference. (T1^4-T2^4)
2007-06-17 08:12:08 · answer #4 · answered by RTF 3 · 0⤊ 0⤋
Black. The experiment in 19th/20th century dealt with "black body radiation". This dealt with how much radiation is given off from a pure black object. In this sense, black is black to all colors, including infrared, ultraviolet, etc. Other colors are only that one color, and they reflect that color, not radiate. See wiki link for more info.
2007-06-17 06:38:24 · answer #5 · answered by Mik K 2 · 0⤊ 0⤋
Black. Matt black best of all due to the maximised surface area.
Yes, I know radiators are normally white but that's down to fashion. The radiator in my car (and yours) is black, isn't it?
2007-06-20 09:22:59 · answer #6 · answered by Anonymous · 0⤊ 0⤋
White.
2007-06-21 05:16:13 · answer #7 · answered by johnandeileen2000 7 · 0⤊ 0⤋
Your assertion is unsuitable. i think of you will locate the replace in temperature develop into as a results of molecular nature of the ingredients no longer the colour. dark ingredients tend to be warmer whilst uncovered to sunlight as a results of transference of sunshine capability to warmth capability. gentle is made out of the colorations of the rainbow, ingredients that are colored seem colored as a results of fact they take up all different wavelengths of sunshine aside from their very own. The capability of those wavelengths is then transfered to warmth capability that's why dark ingredients develop into warmer.
2016-10-09 09:44:53 · answer #8 · answered by ? 4 · 0⤊ 0⤋
I believe it's actually white (although, technically, it's not a colour).
Black ABSORBS best.
2007-06-17 07:05:22 · answer #9 · answered by mataharu 2 · 0⤊ 0⤋
Rarely would you find electric heaters, hot water heaters, and steam type heaters painted black. They are most always silver or some reflective color.
Perhaps you meant conductive colors?
2007-06-17 06:30:25 · answer #10 · answered by mickkooz 4 · 2⤊ 0⤋
I think you meant reflect, not radiate. Chrome.
black absorbs, therefore 'feels' warmer....... but it does not radiate. white reflects, but not as well as chrome.
2007-06-17 06:31:25 · answer #11 · answered by Squirrley Temple 7 · 0⤊ 1⤋