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25 Comments Already

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andrew09211 Said,
May 12th, 2010 @12:59 pm  

this is a very interesting subject and id like to learn it. but ts just too long complicated and hard.

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fassterblade Said,
May 12th, 2010 @1:40 pm  

at the risk of sounding slow. if i follow this correctly; it would seem that it would truly be mathematically impossible to violate the uncertainty principle since there would always be a value associated with you looking at the system.

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eaglefer Said,
May 12th, 2010 @2:27 pm  

They also could be called quantum coin, and quantum dice.

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krastapopolos Said,
May 12th, 2010 @3:25 pm  

oppenheimer,kaesspatzomator you have my humble gratitudes :-) .

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kaesspaetzlomator Said,
May 12th, 2010 @4:08 pm  

It’s just the definition of the dot product in that space. As the guy is saying it satisfies the necessary requirements of a dot product. Dot products can be defined differently in all different kinds of spaces.

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oppenheimer12 Said,
May 12th, 2010 @4:12 pm  

@krastapopolos
The integral version and vector version satisfy the same rules. You can see in the 57-58mins that he does the dot product for vectors and that produces a sum. An integral is like a sum over an interval. Wavefunctions are infinite dimensional, the vectors aren’t.

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krastapopolos Said,
May 12th, 2010 @4:20 pm  

at 56 min. I dont get it? Why is the dot product of the function vetors the same as the integral of the functions? Tip anyone?

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thisislizzz Said,
May 12th, 2010 @4:30 pm  

@fantar132 could you elaborate because susskind is saying that indeed a single particle is affected by the uncertainty principle

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German1184 Said,
May 12th, 2010 @5:30 pm  

Definition: a *vector space* is a set that is closed under finite vector addition (+) and scalar multiplication (.).

Definition: a *complex vector space*
is a vector space whose field of scalars is the complex numbers.

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joeloud1 Said,
May 12th, 2010 @5:38 pm  

@independence8: “our hunter gatherer? brain is NOT evolved intrepret quantum phenomena”

Sure it is. QM is counter-intuitive, but not outside the realm of human understanding.

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Mattprole Said,
May 12th, 2010 @6:29 pm  

Complex as in complex numbers … a bad pun

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1kingconan Said,
May 12th, 2010 @7:05 pm  

@mrelectron111 good question hadn’t thought about that i’m sure it migght be posible one day

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1kingconan Said,
May 12th, 2010 @7:06 pm  

@Mattprole NOT REALLY I’M NEW TO THIS AND IT SEEMS SIMPLE

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lstop1day9243 Said,
May 12th, 2010 @7:17 pm  

23:00 Are we done talking about vector spaces yet…

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myclicks Said,
May 12th, 2010 @7:48 pm  

Why some people insist Susskind should explain “clearly”? QM is not something you can find the analogy from our macroscopic experience. Just get used to it.

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independence8 Said,
May 12th, 2010 @7:58 pm  

in fact…kids or not…our hunter gatherer brain is NOT evolved intrepret quantum phenomena……………

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mrelectron111 Said,
May 12th, 2010 @8:47 pm  

“”TO ALL PEOPLE WHO ARE READING THIS : DOSE THE ELECTRICITY OF BRAIN CAN BE HACKED VIA SOME TECHNOLOGY? Can ANY Microwaves or ELF Waves Manipulate the Electricity of the brain?
My Clear Question : Do some people Reading OUR MINDS And manipulating our subconscious regions of mind-brain via having the electricity of our brain in thier computers?

I hope for search, curiosity.

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Mattprole Said,
May 12th, 2010 @8:55 pm  

@Travellersfees I agree with you actually. y original comment was a bad pun

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Travellersfees Said,
May 12th, 2010 @9:32 pm  

@Mattprole Eucledian geometry is no less difficult, it’s just more familiar.

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drillsargentadog Said,
May 12th, 2010 @10:14 pm  

Getting a degree is FAR more than casually listening to lectures. The courses themselves demand that you 1) do much supplementary reading 2) work through difficult homework problems and 3) take midterms/finals to pass. Not to mention the countless hours of laboratory work and student research which are required. Merely listening to a lecture, while both fun and informative, is actually a very small portion of the educational experience leading to a degree, which is why employers rarely go for it

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Mattprole Said,
May 12th, 2010 @10:55 pm  

Quantum Mechanics is a genuinely complex subject ~_~

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acr08807 Said,
May 12th, 2010 @11:51 pm  

It is a mathematical model that fits a number of experimental results. No experiment has ever shown it to be wrong. There are things that QM doesn’t explain, though. Would you say that is an explanation for reality?

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NeoOneOrg Said,
May 13th, 2010 @12:36 am  

But what is it that QM represents? The explanation for reality?

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acr08807 Said,
May 13th, 2010 @1:05 am  

To teach QM, neo.

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NeoOneOrg Said,
May 13th, 2010 @1:22 am  

What is the intent in the explanation of Quantum Mechanics?

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