http://www.socioclub.org/culture/proknigax/ http://www.socioclub.org/styles/steelblue/logo.gifhttp://www.socioclub.org/culture/proknigax/ ru Fri, 12 Dec 2008 19:25:13 +0300 http://www.socioclub.org/culture/proknigax/p123533.htm#pp123533 http://www.socioclub.org/culture/proknigax/p123533.htm#pp123533 admin@openproj.ru (slonoslon) Fri, 12 Dec 2008 19:25:13 +0300 http://www.socioclub.org/culture/proknigax/p122897.htm#pp122897 http://www.socioclub.org/culture/proknigax/p122897.htm#pp122897 This multiplicative difficulty leading to the need for greater and greater<br />precision in assumptions can be illustrated with the following simple exercise<br />concerning the prediction of the movements of billiard balls on a<br />table. I use the example as computed by the mathematician Michael Berry.<br />If you know a set of basic parameters concerning the ball at rest, can compute<br />the resistance of the table (quite elementary), and can gauge the<br />strength of the impact, then it is rather easy to predict what would happen<br />at the first hit. The second impact becomes more complicated, but possible;<br />you need to be more careful about your knowledge of the initial<br />states, and more precision is called for. The problem is that to correctly<br />compute the ninth impact, you need to take into account the gravitational<br />pull of someone standing next to the table (modestly, Berry's computations<br />use a weight of less than 150 pounds). And to compute the fifty-sixth<br />impact, every single elementary particle of the universe needs to be present<br />in your assumptions! An electron at the edge of the universe, separated<br />from us by 10 billion light-years, must figure in the calculations, since it<br />exerts a meaningful effect on the outcome.<br /> admin@openproj.ru (slonoslon) Fri, 28 Nov 2008 23:19:01 +0300 http://www.socioclub.org/culture/proknigax/p122885.htm#pp122885 http://www.socioclub.org/culture/proknigax/p122885.htm#pp122885 admin@openproj.ru (aRT) Fri, 28 Nov 2008 22:03:33 +0300 http://www.socioclub.org/culture/proknigax/p121598.htm#pp121598 http://www.socioclub.org/culture/proknigax/p121598.htm#pp121598 admin@openproj.ru (anush) Fri, 07 Nov 2008 17:55:34 +0300 http://www.socioclub.org/culture/proknigax/p121490.htm#pp121490 http://www.socioclub.org/culture/proknigax/p121490.htm#pp121490 admin@openproj.ru (aRT) Tue, 04 Nov 2008 21:14:25 +0300 http://www.socioclub.org/culture/proknigax/p119862.htm#pp119862 http://www.socioclub.org/culture/proknigax/p119862.htm#pp119862 :LOL: admin@openproj.ru (Isolda) Wed, 15 Oct 2008 09:40:11 +0400 http://www.socioclub.org/culture/proknigax/p119846.htm#pp119846 http://www.socioclub.org/culture/proknigax/p119846.htm#pp119846 admin@openproj.ru (aRT) Wed, 15 Oct 2008 00:35:29 +0400 http://www.socioclub.org/culture/proknigax/p119836.htm#pp119836 http://www.socioclub.org/culture/proknigax/p119836.htm#pp119836 admin@openproj.ru (aRT) Wed, 15 Oct 2008 00:17:46 +0400 http://www.socioclub.org/culture/proknigax/p119835.htm#pp119835 http://www.socioclub.org/culture/proknigax/p119835.htm#pp119835 admin@openproj.ru (aRT) Wed, 15 Oct 2008 00:16:14 +0400 http://www.socioclub.org/culture/proknigax/p119834.htm#pp119834 http://www.socioclub.org/culture/proknigax/p119834.htm#pp119834 admin@openproj.ru (Isolda) Wed, 15 Oct 2008 00:14:55 +0400 http://www.socioclub.org/culture/proknigax/p119833.htm#pp119833 http://www.socioclub.org/culture/proknigax/p119833.htm#pp119833 admin@openproj.ru (aRT) Wed, 15 Oct 2008 00:12:47 +0400 http://www.socioclub.org/culture/proknigax/p119764.htm#pp119764 http://www.socioclub.org/culture/proknigax/p119764.htm#pp119764 admin@openproj.ru () Tue, 14 Oct 2008 13:43:20 +0400 http://www.socioclub.org/culture/proknigax/p119762.htm#pp119762 http://www.socioclub.org/culture/proknigax/p119762.htm#pp119762 admin@openproj.ru (milena 7) Tue, 14 Oct 2008 13:39:14 +0400 http://www.socioclub.org/culture/proknigax/p119746.htm#pp119746 http://www.socioclub.org/culture/proknigax/p119746.htm#pp119746 admin@openproj.ru () Tue, 14 Oct 2008 12:11:41 +0400 http://www.socioclub.org/culture/proknigax/p119737.htm#pp119737 http://www.socioclub.org/culture/proknigax/p119737.htm#pp119737 admin@openproj.ru () Tue, 14 Oct 2008 10:40:36 +0400 http://www.socioclub.org/culture/proknigax/p119722.htm#pp119722 http://www.socioclub.org/culture/proknigax/p119722.htm#pp119722 admin@openproj.ru (Mona) Tue, 14 Oct 2008 09:06:02 +0400 http://www.socioclub.org/culture/proknigax/p119715.htm#pp119715 http://www.socioclub.org/culture/proknigax/p119715.htm#pp119715 admin@openproj.ru (milena 7) Tue, 14 Oct 2008 08:32:53 +0400 http://www.socioclub.org/culture/proknigax/p119710.htm#pp119710 http://www.socioclub.org/culture/proknigax/p119710.htm#pp119710 admin@openproj.ru () Tue, 14 Oct 2008 03:55:25 +0400 http://www.socioclub.org/culture/proknigax/p119678.htm#pp119678 http://www.socioclub.org/culture/proknigax/p119678.htm#pp119678 admin@openproj.ru (aRT) Mon, 13 Oct 2008 22:46:58 +0400 http://www.socioclub.org/culture/proknigax/p119677.htm#pp119677 http://www.socioclub.org/culture/proknigax/p119677.htm#pp119677 admin@openproj.ru (Isolda) Mon, 13 Oct 2008 22:46:25 +0400 http://www.socioclub.org/culture/proknigax/p119675.htm#pp119675 http://www.socioclub.org/culture/proknigax/p119675.htm#pp119675 admin@openproj.ru (aRT) Mon, 13 Oct 2008 22:35:07 +0400 http://www.socioclub.org/culture/proknigax/p119674.htm#pp119674 http://www.socioclub.org/culture/proknigax/p119674.htm#pp119674 admin@openproj.ru (Isolda) Mon, 13 Oct 2008 22:32:35 +0400 http://www.socioclub.org/culture/proknigax/p119657.htm#pp119657 http://www.socioclub.org/culture/proknigax/p119657.htm#pp119657 admin@openproj.ru (aRT) Mon, 13 Oct 2008 21:34:54 +0400 http://www.socioclub.org/culture/proknigax/p78067.htm#pp78067 http://www.socioclub.org/culture/proknigax/p78067.htm#pp78067 admin@openproj.ru () Sat, 02 Feb 2008 00:02:07 +0300 http://www.socioclub.org/culture/proknigax/p71938.htm#pp71938 http://www.socioclub.org/culture/proknigax/p71938.htm#pp71938 admin@openproj.ru () Thu, 27 Dec 2007 00:09:40 +0300