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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><b>From:</b> extropy-chat <extropy-chat-bounces@lists.extropy.org> <b>On Behalf Of </b>Adrian Tymes via extropy-chat<br><b>Subject:</b> Re: [ExI] Update on the Hawaiian observatory shutdown<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal>On Fri, Aug 23, 2019 at 8:55 AM spike jones via extropy-chat <<a href="mailto:extropy-chat@lists.extropy.org">extropy-chat@lists.extropy.org</a>> wrote:<o:p></o:p></p></div><div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in'><div><div><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'><b>From:</b> <a href="mailto:spike@rainier66.com" target="_blank">spike@rainier66.com</a> <<a href="mailto:spike@rainier66.com" target="_blank">spike@rainier66.com</a>> <o:p></o:p></p></div></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:14.0pt'> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:14.0pt'>>…Failing that, we could make a closed system oxygen-enriched office/sleeping space. It would not be pressurized but more like a warm car on a cold day, with that kind of doors, a rubber seal but at ambient pressure. Instead of about 20% oxygen in there it would be about 33%, so that the oxygen level is about the same as down at the women’s locker room where the invisible man lives. spike</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:14.0pt'>Another idea: to compensate for the elevated fire risk in an oxygen-enriched chamber, the proles could wear wool clothing.</span><o:p></o:p></p></div></div></blockquote><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><span style='font-size:14.0pt'>>…Or, y'know, just don't enrich the oxygen. Add nitrogen as well as oxygen, keeping the fraction of oxygen the same as at ground level and making it 1 atmosphere pressure, similar to the ISS and Shuttle. The airlock environment itself could be useful for science, in addition to the observatory.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:14.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:14.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:14.0pt'>Ja, that’s what I meant. The atmosphere is about 20% oxygen and about 80% nitrogen (ja I know, there is about a percent which is everything else combined) so the notion is to enrich the oxygen so that the partial pressure of O2 is about 0.2 atm in the chamber, as it is on the ground, but the partial pressure of N2 is about 0.4 atm instead of 0.8, so the percentage of oxygen would be about a third instead of a fifth of the air, even though the pressure is lower. The cooking would still be funky (85C boiling point ( I boiled the hell outta my ramen up there for about 15 minutes and it was still chewy as a bunch of rubber bands (but I was crazy starving so it still tasted great (particularly on the second night on my way back down (hey simple solution, use pressure cookers at the observatory.))) In a 0.6 atm chamber the astronomers should still be able to concentrate in that environment. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:14.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:14.0pt'>The fire risk would be elevated somewhat because there would be less inert nitrogen available to carry away heat, even though the partial pressure of oxygen is about the same.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:14.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:14.0pt'>The reason I might lean away from a pressurized environment is that it would take a lot of sturdy building material and crews, giving the protestors even more to complain about. They would argue the invisible man has never needed any of this stuff (they deny what we all know already: that guy lives in the women’s dormitory down at the U of Hawaii now.)<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:14.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:14.0pt'>spike<o:p></o:p></span></p></div></div></div></div></body></html>