On Friday, November 29, 2019 at 8:57:16 AM UTC-6, John Clark wrote: > > All this talk about energy conservation has got me thinking about > Perpetual Motion Machines, there are 2 types, both are impossible but one > is more impossible than the other. One type would violate the known laws of > physics, or maybe not; it seems to me that in an accelerating universe it > would be possible, at least in theory, to extract work (force over a > distance) from nothing and keep doing so forever. > > The other type of Perpetual Motion Machine would violate the second law of > thermodynamics, you couldn't create energy from nothing but you could keep > recycling the same energy and keep extracting work out of it forever. That > would violate not just a law of physics but a law of logic too. If you > could do that then you could also make entropy decrease, but that would > be illogical because there is no getting around the fact that there are > just more ways something can be disorganized than organized. > > John K Clark >
All of this is based on premises that are, basically. only mere presumptions. Nothing is settled truth here. @philipthrift [image: Time's Arrow and Archimedes' Point: New Directions for the Physics of Time] <https://www.goodreads.com/book/photo/175546.Time_s_Arrow_and_Archimedes_Point> Want to Read Rate this book 1 of 5 stars <https://www.goodreads.com/book/show/175546.Time_s_Arrow_and_Archimedes_Point#>2 of 5 stars <https://www.goodreads.com/book/show/175546.Time_s_Arrow_and_Archimedes_Point#>3 of 5 stars <https://www.goodreads.com/book/show/175546.Time_s_Arrow_and_Archimedes_Point#>4 of 5 stars <https://www.goodreads.com/book/show/175546.Time_s_Arrow_and_Archimedes_Point#>5 of 5 stars <https://www.goodreads.com/book/show/175546.Time_s_Arrow_and_Archimedes_Point#> Preview <https://read.amazon.com/nc/?kcrFree=only&tag=x_gr_w_preview_sin_kcr-20&asin=B004SL4KIU> Time's Arrow and Archimedes' Point: New Directions for the Physics of Time by Huw Price <https://www.goodreads.com/author/show/102431.Huw_Price> 3.70 · Rating details <https://www.goodreads.com/book/show/175546.Time_s_Arrow_and_Archimedes_Point#> · 132 ratings <https://www.goodreads.com/book/show/175546.Time_s_Arrow_and_Archimedes_Point#other_reviews> · 9 reviews <https://www.goodreads.com/book/show/175546.Time_s_Arrow_and_Archimedes_Point#other_reviews> Why is the future so different from the past? Why does the past affect the future and not the other way around? What does quantum mechanics really tell us about the world? In this important and accessible book, Huw Price throws fascinating new light on some of the great mysteries of modern physics, and connects them in a wholly original way. Price begins with the mystery of the arrow of time. Why, for example, does disorder always increase, as required by the second law of thermodynamics? Price shows that, for over a century, most physicists have thought about these problems the wrong way. Misled by the human perspective from within time, which distorts and exaggerates the differences between past and future, they have fallen victim to what Price calls the "double standard fallacy": proposed explanations of the difference between the past and the future turn out to rely on a difference which has been slipped in at the beginning, when the physicists themselves treat the past and future in different ways. To avoid this fallacy, Price argues, we need to overcome our natural tendency to think about the past and the future differently. We need to imagine a point outside time - an Archimedean "view from nowhen" - from which to observe time in an unbiased way. Price then turns to the greatest mystery of modern physics, the meaning of quantum theory. He argues that in missing the Archimedean viewpoint, modern physics has missed a radical and attractive solution to many of the apparent paradoxes of quantum physics. Many consequences of quantum theory appear counter-intuitive, such as Schrodinger's Cat, whose condition seems undetermined until observed, and Bell's Theorem, which suggests a spooky"nonlocality, " where events happening simultaneously in different places seem to affect each other directly. Price shows that these paradoxes can be avoided by allowing that at the quantum level the future does, indeed, affect the past. This demystifies nonlocality, ... @philipthrift -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to everything-list+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/e3f3b3ec-3c5f-4326-9f63-c43e8c6a238c%40googlegroups.com.
