Making sense of string theory | Brian Greene
http://www.ted.com In clear, nontechnical language, string theorist Brian Greene explains how our understanding of the universe has evolved from Einstein's notions of gravity and space-time...
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In the year 1919,a virtually unknown German mathematician, named Theodor Kaluzasuggested a very bold and, in some ways, a very bizarre idea.He proposed that our universemight actually have more than the three dimensionsthat we are all aware of.That is in addition to left, right, back, forth and up, down,Kaluza proposed that there might be additional dimensions of spacethat for some reason we don't yet see.Now, when someone makes a bold and bizarre idea,sometimes that's all it is -- bold and bizarre,but it has nothing to do with the world around us.This particular idea, however --although we don't yet know whether it's right or wrong,and at the end I'll discuss experiments which, in the next few years,may tell us whether it'...
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In the year 1919,a virtually unknown German mathematician, named Theodor Kaluzasuggested a very bold and, in some ways, a very bizarre idea.He proposed that our universemight actually have more than the three dimensionsthat we are all aware of.That is in addition to left, right, back, forth and up, down,Kaluza proposed that there might be additional dimensions of spacethat for some reason we don't yet see.Now, when someone makes a bold and bizarre idea,sometimes that's all it is -- bold and bizarre,but it has nothing to do with the world around us.This particular idea, however --although we don't yet know whether it's right or wrong,and at the end I'll discuss experiments which, in the next few years,may tell us whether it'...
