En un mensaje con fecha 01/06/2005 11:27:43 AM Mexico Standard Time, [EMAIL PROTECTED] escribe:
>What is the temperature of a meteoroid drifting thrue space ? >Is it too small to absorb radiation-energi from the sun ? Hi Lars, I'm breaking this email in three chapters, first the results, and the second and third parts will be assumptions and most discussion. Part I There is no minimum size to absorb energy from the Sun, even a molecule can do it - heat of everything is actually principally caused by molecular vibrational motion in the Infrared range under normal circumstances - molecular vibrations. So that answers the easy question. On the temperature of a meteoroid traveling in space, that is a complicated question because the question is really millions of questions in one depending on what temperature you mean - and where you measure it. But I think I can give a shot at a satisfying at everything you wanted to know on the first question and weren't afraid to ask, with the following calculations you kept me awake doing. You can make a lot of interesting observations here. I'd add a Eucrite and an Enstatite Achondrite, which I expect the former would not be closer to OC, and the later more on the way to the irons. I guess:) Distance Energy flux <-------T (degrees C)--------> T(Planet av. Surf.) AU W/m2 CC OC Fe-Ni "ideal" note 0.31 14,214 216 195 378 227 Mercury (p) 167 0.47 6,184 124 107 255 133 Mercury (ap) 167 0.72 2,635 48 34 154 55 Venus 464 1.00 1,366 -1 -12 89 6 Earth 15 1.52 591 -52 -62 21 -47 Mars -63 2.80 174 -110 -117 -57 -107 3.00 152 -116 -123 -64 -112 4.00 85 -137 -143 -92 -134 5.00 55 -151 -156 -111 -148 5.2 51 -154 -159 -114 -151 Jupiter -144 9.5 15 -185 -188 -155 -183 Saturn -176 19.2 3.7 -211 -214 -190 -209 Uranus -215 29.7 1.5 -223 -225 -207 -222 Pluto (p) -223 30.1 1.5 -223 -226 -207 -222 Neptune -215 49.3 0.6 -234 -236 -221 -233 Pluto (ap) -223 Kuiper, Comets (ap) 50K 0.000001 -272 -272 -271 -272 Oort Cloud (Table may not display well in text, but if you copy it into excel and use text-to-columns it should look great.) Proximamente: Assumptions ______________________________________________ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list