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Help Understand Quantum Phyisics And String Theory

Posted: Tue Oct 13, 2009 2:53 am
by 76794p
I have recently purchased "Elegant Universe" and am a little confused with the whole Quantum physics and mechanics thing and as well as string theory>

RE: Help Understand Quantum Phyisics And String Theory

Posted: Tue Oct 13, 2009 4:07 am
by Flighty
You already did step 1, which is buy that book.

Now, open the book. I did. I don't understand f--- all in that book really, but it is a nice story anyhow. It has to do with curly particles you can't see, and they bend time and errrr, I don't really understand, sorry.

RE: Help Understand Quantum Phyisics And String Theory

Posted: Tue Oct 13, 2009 4:07 am
by akiss20
What aspects about it? Ask some specific questions and I can try and answer to the best of my ability, I have done a good amount of reading on such things/am surrounded by nerds constantly who I can ask. Just asking "What is quantum mechanics and string theory" though is a HUGE question.

RE: Help Understand Quantum Phyisics And String Theory

Posted: Tue Oct 13, 2009 4:37 am
by DocLightning
I have some light physics background. Not much, though. But that book does the best job that can be done at explaining it. It's really tough stuff to comprehend.

RE: Help Understand Quantum Phyisics And String Theory

Posted: Tue Oct 13, 2009 4:46 am
by nighthawk
you may wish to start here: http://en.wikipedia.org/wiki/String_theory  Silly

RE: Help Understand Quantum Phyisics And String Theory

Posted: Tue Oct 13, 2009 5:01 am
by 76794p


Quoting AKiss20 (Reply 2):
What aspects about it?

I would like to know about a little of everything, especially how the strings are held together.

RE: Help Understand Quantum Phyisics And String Theory

Posted: Tue Oct 13, 2009 5:50 am
by N104UA
Here watch these you tube videos that explain string theory

Part 1: http://www.youtube.com/watch?v=JkxieS-6WuA
Part 2: http://www.youtube.com/watch?v=ySBaYMESb8o&feature=related

These really explain what string theory is up to the 10th dimension

RE: Help Understand Quantum Phyisics And String Theory

Posted: Tue Oct 13, 2009 8:43 am
by Mir


Quoting 76794p (Thread starter):
Help Understand Quantum Phyisics And String Theory 

42.

That is all.  Smile

-Mir

RE: Help Understand Quantum Phyisics And String Theory

Posted: Tue Oct 13, 2009 12:40 pm
by Aaron747
A good understanding at a basic level of all these wacky fields in theoretical physics can be had by reading Dr. Michio Kaku's "Parallel Worlds". Enjoy!

RE: Help Understand Quantum Phyisics And String Theory

Posted: Tue Oct 13, 2009 12:44 pm
by Airstud
Isn't string theory starting to fall out of fashion in physicist circles?

RE: Help Understand Quantum Phyisics And String Theory

Posted: Tue Oct 13, 2009 12:54 pm
by AustrianZRH
To understand them, you have to specialize yourself in them. I got my MSc in Physics 2.5 years ago and am currently working on my PhD, both in experimental solid-state physics. And guess what - I haven't really understood those theories. Basic QM questions, ok, but quantum field theory, string theory, all that stuff, forget it without in-depth lectures and loads of reading.

RE: Help Understand Quantum Phyisics And String Theory

Posted: Tue Oct 13, 2009 4:36 pm
by Yellowstone


Quoting Airstud (Reply 9):
Isn't string theory starting to fall out of fashion in physicist circles?

Quite a few experimentalists and non-string theoreticians aren't especially fond of it. It's an interesting mathematical exercise to come up with a set of rules that fits what we know about how particles interact, but so far string theory has not provided any quantitative predictions that could be confirmed by experiment. And if your theory can't be confirmed by experiment or observation, it's not scientifically rigorous.

RE: Help Understand Quantum Phyisics And String Th

Posted: Wed Oct 14, 2009 12:50 am
by Evan767


Quoting Nighthawk (Reply 4):
you may wish to start here: http://en.wikipedia.org/wiki/String_theory  

That's the last place you want to go if you're trying to make sense out of string theory. It's something difficult to grasp, but this website helped me gain a general understanding of string theory: www.superstringtheory.com

One of the first things I'd try and do to grasp both quantum mechanics and string theory is to try and understand leptons, bosons, and quarks.

RE: Help Understand Quantum Phyisics And String Theory

Posted: Wed Oct 14, 2009 2:11 am
by akiss20
Depending on your interest/freshness with multi-variable calculus and topology, I would recommend Road to Reality: A Complete Guide to the Laws of the Universe by Roger Penrose. I received that book when I was about 12, but now that I am a freshman in college and actually learning multi-variable and the like, I am going to start going through it. I have read very good things of it, it is considered one of the better guides to these things.

RE: Help Understand Quantum Phyisics And String Theory

Posted: Wed Oct 14, 2009 6:57 am
by flanker
If you want to understand STRING THEORY or the latest about it, i STRONGLY suggest you find any video that you can of MICHIO KAKU. He is the modern Carl Sagan of connecting and explaining to people these complex subjects.

search "michio kaku string theory"

Start with the link below and then go to his personal page and watch everything he has! its brilliant!

http://www.youtube.com/watch?v=ZnQLsERqTIg

http://mkaku.org/home/

I think his myspace page also has numerous videos!

[Edited 2009-10-14 00:07:38 by flanker]

RE: Help Understand Quantum Phyisics And String Theory

Posted: Wed Oct 14, 2009 8:08 am
by flanker