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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><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><b><span style='font-size:14.0pt'>From:</span></b><span style='font-size:14.0pt'> extropy-chat <extropy-chat-bounces@lists.extropy.org> <b>On Behalf Of </b>John Clark<br><b>Sent:</b> Sunday, July 15, 2018 10:17 AM<br><b>To:</b> ExI chat list <extropy-chat@lists.extropy.org><br><b>Subject:</b> Re: [ExI] The tools humanity will need for living in the year 1 trillion<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:14.0pt'><o:p> </o:p></span></p><div><div><p class=gmail-p1><span style='font-size:14.0pt'>On Sat, Jul 14, 2018 at 4:33 PM, Adrian Tymes <<a href="mailto:atymes@gmail.com">atymes@gmail.com</a>> wrote:<o:p></o:p></span></p><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in'><p class=MsoNormal><span style='font-size:14.0pt'>> > Why couldn’t the same argument also be used to show you could get work out of the expansion of the universe?<o:p></o:p></span></p></blockquote><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in'><p class=MsoNormal><span style='font-size:14.0pt'> <o:p></o:p></span></p></blockquote><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in'><p class=MsoNormal><span style='font-size:14.0pt'>><i> Static friction,</i><o:p></o:p></span></p></blockquote><p class=gmail-p1><span style='font-size:14.0pt'>That was just one example, it you don't like friction then tie one end of a VERY long string to a bowling ball and the other to a bar magnet inside a solenoid…<o:p></o:p></span></p><p class=gmail-p1><span style='font-size:14.0pt'>…<o:p></o:p></span></p><p class=gmail-p1><span style='font-size:14.0pt'>The string and the solenoid expand, so the expansion of space in that thought experiment does not pull the magnet.<o:p></o:p></span></p><p class=gmail-p1><span style='font-size:14.0pt'> <o:p></o:p></span></p><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in'><p class=MsoNormal><i><span style='font-size:14.0pt'>…>> Expansion of the universe seems likely to remain substantially weaker than most detectable gravitational waves.</span></i><span style='font-size:14.0pt'><o:p></o:p></span></p></blockquote><div><p class=MsoNormal><span style='font-size:14.0pt'> <o:p></o:p></span></p></div><p class=MsoNormal><span style='font-size:14.0pt'>>…Not if the acceleration is accelerating, if it is we're heading for The Big Rip and that will be very detectable indeed, even atoms will be ripped apart and soon after that protons and neutrons. <o:p></o:p></span></p><p class=gmail-p1><span style='font-size:14.0pt'>John K Clark<o:p></o:p></span></p><p class=gmail-p1><span style='font-size:14.0pt'><o:p> </o:p></span></p><p class=gmail-p1><span style='font-size:14.0pt'>This one is more compelling because we tend to think of protons and neutrons being pulled apart as requiring energy, but even that isn’t clear to me if it happened because space expanded them apart.<o:p></o:p></span></p><p class=gmail-p1><span style='font-size:14.0pt'>spike<o:p></o:p></span></p></div></div></div></body></html>