Lecture 2 | String Theory and M-Theory
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(September 27, 2010) Professor Leonard Susskind discusses how the forces that act upon strings can affect the quantum mechanics. He also reviews many of the theories of relativity that contributed to string theory today. String theory (with its close relative, M-theory) is the basis for the most ambitious theories of the physical world. It has profoundly influenced our understanding of gravity, cosmology, and particle physics. In this course we will develop the basic theoretical and mathematical ideas, including the string-theoretic origin of gravity, the theory of extra dimensions of space, the connection between strings and black holes, the "landscape" of string theory, and the holographic principle. This course was originally presented in Stanford's Continuing Studies program. Stanford University: http://www.stanford.edu/ Stanford Continuing Studies Program: http://csp.stanford.edu/ Stanford University Channel on YouTube: http://www.youtube.com/stanford
Comments
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I want some coffee now :)
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Infinitely massive string with a volume of 0 => Stringularity?
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It is interesting
His chewing is putting me off. -
When finished watching this you arrive at one solid conclusion. We know very little about our universe. Therefore, we utilize fancy/tong twisting terminology to describe this unknown web of complex physics confronting us. The unrealistic theory of Multiverse has numerous holes which are NOT addressed to date.
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Just impose some known boundary conditions and see the results.
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The sum of (Too many holes+ Assumptions with no solid foundation+ Ignoring the verified elements governing the Universe) = To 10 ^ 500 Solutions = A Multiverse?
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string theory is mathematical gibberish
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14:37 :D
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He should get a sponsorship from Starbuck's...
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students on board dont know about the value of cosin at 0
wow -
i love listening to his B>S>
...i listen to it while cooking in the Kitchen
i dont understand everything for sure
but i love listening to smart people
i had seven years of grad level Chemistry and physics
so i can sort of follow him
better than the six o clock news with all that stupid violence....middle east
etc
and stupid violent football
or borring...boring baseballlttttennis.....spelled with one word ? maybe they are equally boring
and merge into or blend together as David Bohm would say...he should have gotten the Noble Prize
but he ran...brazil...england
because america was persecuting commies
and
leonard....uhhh...Dr Susskind,,,sweet child in German ?,,,,wonderful Brooklyn Accent
...
GMG -
Violin strings are made from 'catgut' which may be so-called from 'cattle gut' (walls of intestines from cows, pigs or goats...but never from cats, thank Buddha!)
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Does not any system look like a collection of harmonic oscillators if you expand it as a Fourier series? Where do specific properties of the spring come into the equation?
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"Sometimes I set things like 3 equal to 2." --- classic!
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Congratulations on being crazy enough to advance to the second lecture. less than 20% made it this far. M-theory is too abstract for the closed minded and too complicated for the feeble minded. Even if you are just beginning to comprehend M-theory, consider yourself part of the 1-3% of the planet who can actually got this far in scientific inquiry.
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Fine ok Dirichlet was GERMAN ok guys!So he did one mistake!
This lectures arent about nationality of some scientists but about giving simplistic and clear concepts for understanding the nature! -
it was amazing to feel my mind click after watching this and see the roots of holographic principle in the mathematics.
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Nambu-goto? Nambu-goto?How to quantise I don't know. Polyakov!
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He uses an approximation to see that the projection of the string onto the plane perpendicular to the boost behaves non relativistically. Also he says that the resulting formulas are exact. Can someone explain this?
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Funny how Part 1 of this series has 300K+ views and this a meagre 50K.
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