Is the Universe Infinite?

Free Documentaries Online

Free Documentaries Online

Find us on:
  

Who's Online

We have 263 guests and 8 members online


Is the Universe Infinite?
Close Ad
Lights off
Rate:
0 ratings
Views: 525

From: silichip
Videos: 1981
Added: 08-09-2012 18:27:40
Watch this and other space videos at http://SpaceRip.comExplore the biggest question of all... in 1080p. How far do the stars stretch out into space? And what's beyond them? In modern times, we built giant telescopes that have allowed us to cast our gaze deep into the universe. Astronomers have been able to look back to near the time of its birth. They've reconstructed the course of cosmic history in astonishing detail.From intensive computer modeling, and myriad close observations, they've uncovered important clues to its ongoing evolution. Many now conclude that what we can see, the stars and galaxies that stretch out to the limits of our vision, represent only a small fraction of all there is. Does the universe go on forever? Where do we fit within it? And how would the great thinkers have wrapped their brains around the far-out ideas on today's cutting edge? For those who find infinity hard to grasp, even troubling, you're not alone. It's a concept that has long tormented even the best minds.Over two thousand years ago, the Greek mathematician Pythagoras and his followers saw numerical relationships as the key to understanding the world around them. But in their investigation of geometric shapes, they discovered that some important ratios could not be expressed in simple numbers.Take the circumference of a circle to its diameter, called Pi. Computer scientists recently calculated Pi to 5 trillion digits, confirming what the Greeks learned: there are no repeating patterns and no ending in sight.The discovery of the so-called irrational numbers like Pi was so disturbing, legend has it, that one member of the Pythagorian cult, Hippassus, was drowned at sea for divulging their existence. A century later, the philosopher Zeno brought infinity into the open with a series of paradoxes: situations that are true, but strongly counter-intuitive. In this modern update of one of Zeno's paradoxes, say you have arrived at an intersection. But you are only allowed to cross the street in increments of half the distance to the other side. So to cross this finite distance, you must take an infinite number of steps.In math today, it's a given that you can subdivide any length an infinite number of times, or find an infinity of points along a line. What made the idea of infinity so troubling to the Greeks is that it clashed with their goal of using numbers to explain the workings of the real world.To the philosopher Aristotle, a century after Zeno, infinity evoked the formless chaos from which the world was thought to have emerged: a primordial state with no natural laws or limits, devoid of all form and content.But if the universe is finite, what would happen if a warrior traveled to the edge and tossed a spear? Where would it go? It would not fly off on an infinite journey, Aristotle said. Rather, it would join the motion of the stars in a crystalline sphere that encircled the Earth. To preserve the idea of a limited universe, Aristotle would craft an historic distinction.On the one hand, Aristotle pointed to the irrational numbers such as Pi. Each new calculation results in an additional digit, but the final, final number in the string can never be specified. So Aristotle called it
Url:
Embed:

Related Videos
0:25:00
Owner: silichip
Views: 493
Date: 08-09-2012
0:20:13
Owner: silichip
Views: 492
Date: 08-09-2012
0:56:05
Owner: silichip
Views: 3792
Date: 12-05-2010
0:56:07
Owner: silichip
Views: 3125
Date: 12-05-2010
0:55:51
Owner: silichip
Views: 5521
Date: 12-05-2010
0:20:06
Owner:
Views: 2082
Date: 17-08-2010
0:21:41
Owner:
Views: 1824
Date: 17-08-2010
0:21:50
Owner:
Views: 2358
Date: 17-08-2010
0:20:18
Owner:
Views: 2209
Date: 17-08-2010
0:21:27
Owner:
Views: 1903
Date: 17-08-2010
0:21:11
Owner:
Views: 2957
Date: 17-08-2010
0:44:29
Owner: silichip
Views: 870
Date: 01-01-2011
Owner: silichip
Views: 1265
Date: 01-01-2011
Owner: silichip
Views: 1011
Date: 01-01-2011
0:44:26
Owner: silichip
Views: 781
Date: 29-06-2011
0:45:03
Owner: silichip
Views: 947
Date: 29-06-2011
0:58:03
Owner: silichip
Views: 2271
Date: 01-09-2012
0:18:48
Owner:
Views: 9713
Date: 13-05-2010
0:44:51
Owner: silichip
Views: 4479
Date: 18-09-2010
0:48:11ᅠ
Owner:
Views: 1776
Date: 22-06-2010

Category
Owner: silichip
Views: 1316
Date: 15-06-2013
Owner: silichip
Views: 1737
Date: 14-06-2013
Owner: silichip
Views: 1722
Date: 11-05-2013
0:59:36
Owner: silichip
Views: 1491
Date: 11-05-2013
0:59:11
Owner: silichip
Views: 1057
Date: 11-05-2013
0:59:13
Owner: silichip
Views: 1129
Date: 11-05-2013
0:59:09
Owner: silichip
Views: 1061
Date: 11-05-2013
0:58:07
Owner: silichip
Views: 1103
Date: 11-05-2013
0:58:34
Owner: silichip
Views: 993
Date: 01-05-2013
0:58:48
Owner: silichip
Views: 772
Date: 01-05-2013
0:58:28
Owner: silichip
Views: 495
Date: 01-05-2013
0:59:04
Owner: silichip
Views: 534
Date: 01-05-2013
0:58:05
Owner: silichip
Views: 782
Date: 01-05-2013
0:57:39
Owner: silichip
Views: 723
Date: 01-05-2013
0:44:04
Owner: silichip
Views: 1466
Date: 14-04-2013
0:44:03
Owner: silichip
Views: 1135
Date: 14-04-2013
0:44:03
Owner: silichip
Views: 830
Date: 14-04-2013
0:44:03
Owner: silichip
Views: 771
Date: 14-04-2013
0:44:00
Owner: silichip
Views: 909
Date: 14-04-2013
0:44:00
Owner: silichip
Views: 547
Date: 14-04-2013
0:44:03
Owner: silichip
Views: 886
Date: 14-04-2013
Owner: silichip
Views: 1036
Date: 13-04-2013
Owner: silichip
Views: 897
Date: 12-04-2013
Owner: silichip
Views: 668
Date: 12-04-2013
Owner: silichip
Views: 515
Date: 12-04-2013
Owner: silichip
Views: 528
Date: 12-04-2013
Owner: silichip
Views: 717
Date: 12-04-2013
Owner: silichip
Views: 561
Date: 12-04-2013
Owner: silichip
Views: 510
Date: 12-04-2013
Owner: silichip
Views: 414
Date: 12-04-2013
 
Free Joomla Templates at JoomlaShack
Watch Free Movies