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realfuzzhead



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anyone here actually understand Quantum Physics?
#14463061 - 05/16/11 04:33 PM (12 years, 8 months ago) |
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I know quite a few of us here are familiar with Schrödinger's experiments and the apparent wave/particle duality of microscopic particles, I know alot of us here have a decent understanding of the Qualitative explanations of Quantum Physics but does anyone have a Quantitative understanding of it?
Like does anyone here actually understand the Standard Model? OR the Feynman Diagrams? Or the probability density of particles?
Ive been reading very heavily into Quantum physics, and man it is some HARD SHIT. Common sense has absolutely no place here.. but it is all so interesting. I plan on taking at least some classes that tie into this but I was wondering if anyone here has done this before?
how hard was it?
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Doc_T
Random Dude




Registered: 03/06/09
Posts: 42,395
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Re: anyone here actually understand Quantum Physics? [Re: realfuzzhead]
#14463074 - 05/16/11 04:35 PM (12 years, 8 months ago) |
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I wish I did. 
Hope DieCommmie pops in, I want his viewpoint.
-------------------- You make it all possible. Doesn't it feel good?
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realfuzzhead



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Re: anyone here actually understand Quantum Physics? [Re: Doc_T]
#14463087 - 05/16/11 04:38 PM (12 years, 8 months ago) |
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Like the book im reading, The Universe & the Atom by Don Lichtenburg is an amazing book, and alot of it is about quantum mechanics and what not. But man I have to reread these chapters 2 or 3 times to understand it, and it is mostly qualitative explanations. I can't even imagine trying to crunch actual numbers on this stuff
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DeadHearts


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Re: anyone here actually understand Quantum Physics? [Re: realfuzzhead]
#14463098 - 05/16/11 04:39 PM (12 years, 8 months ago) |
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Math is some real shit.
I find it easy to "understand" after delving into for days at a time. But when you are not working with it all day everyday you lose it.
"A brief history of time" breaks things down nicely to where its easier to grasp all the complicated happenings of theorys that can be so complicated.
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learningtofly
Ancient Aliens



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Re: anyone here actually understand Quantum Physics? [Re: realfuzzhead]
#14463145 - 05/16/11 04:46 PM (12 years, 8 months ago) |
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you're confusing common sense with intuition
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mellowparty
legitimate researcher


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Re: anyone here actually understand Quantum Physics? [Re: realfuzzhead]
#14463188 - 05/16/11 04:56 PM (12 years, 8 months ago) |
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I know that tiny particles can behave as waves but thats about it really 
Now this kinda stuff is easier to understand:
Looks pretty too
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DeadHearts


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Re: anyone here actually understand Quantum Physics? [Re: mellowparty]
#14463194 - 05/16/11 04:57 PM (12 years, 8 months ago) |
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Something that blows my fucking mind is the apparent fact that matter reacts differently when its being observed.
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Eshu
Sean.



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Re: anyone here actually understand Quantum Physics? [Re: mellowparty]
#14463198 - 05/16/11 04:58 PM (12 years, 8 months ago) |
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Quantum Physics fascinates me.
But has me lost all at the same time.
--------------------
  ~^*>~.Life is the hyphen between matter and spirit.~^*>~
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aNeway2sayHooray
Cresley Wusher




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Re: anyone here actually understand Quantum Physics? [Re: Eshu]
#14463205 - 05/16/11 04:59 PM (12 years, 8 months ago) |
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Quote:
Eshu said: Quantum Physics fascinates me.
But has me lost all at the same time.

-------------------- Mad_Larkin said: Death is just a thang.
MrJellineck said: Profits, prophets. That's all you jews think about. sheekle said: life is drugs... and music... and cat...
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BoneMan
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Re: anyone here actually understand Quantum Physics? [Re: DeadHearts]
#14463214 - 05/16/11 05:02 PM (12 years, 8 months ago) |
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Quote:
DeadHearts said: Something that blows my fucking mind is the apparent fact that matter reacts differently when its being observed.

thats a common misconception.. see, in order to observe sub-atomic particles you can't just use a super microscope with an enormous lens or something. quantum physics papers use the term "observe" so loosely and usually fail to explain that in order to observe what the particles are doing, they need to use a detector that necessarily interacts with the particle in some way, most likely being hit by a laser or something. its definitely not just watching that changes the result. the "watching" in this case, involves touching the waves/particles with a detection instrument.
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Caine
lab rat



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Re: anyone here actually understand Quantum Physics? [Re: Eshu]
#14463216 - 05/16/11 05:02 PM (12 years, 8 months ago) |
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The problem with gaining a quantitative understanding of quantum physics is that you have to get far more specific than just "quantum physics," people spend years trying to prove a single theory, and they reference tons and tons of previous work that even the peer review board probably has to look up a good portion of.
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CaptainAhab


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Re: anyone here actually understand Quantum Physics? [Re: learningtofly]
#14463220 - 05/16/11 05:03 PM (12 years, 8 months ago) |
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No one can explain quantum physics to you on here, I'm afraid.
If you're genuinely interested, though, a good place to start would be by reading Feynman's Lectures on Physics, and then moving on.
To understand quantum physics, you have to understand other topics, first. Feynman's Lectures on Physics books are arranged sequentially for that purpose.
Here's a quote from wikipedia on the issue: "The first volume focuses on mechanics, radiation, and heat. The second volume is mainly on electromagnetism and matter. The third volume, on quantum mechanics..."
I have pdf's of the different volumes, if you want me to send them to you.
http://en.wikipedia.org/wiki/Feynman%27s_Lectures_on_Physics
The wave-particle duality you're referring to can be derived from calculus-based equations. You have taken calculus, right?
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BoneMan
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Re: anyone here actually understand Quantum Physics? [Re: BoneMan]
#14463234 - 05/16/11 05:06 PM (12 years, 8 months ago) |
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check out the book "the fabric of the cosmos" by brian greene. he does the best job possible at explaining quantum physics, relativity, and other scientific weirdness to non-scientist lay-persons. he's got another book called "the elegant universe" which I haven't read but he's been a professor of physics and mathematics at Colombia University since 1996.
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millzy


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Re: anyone here actually understand Quantum Physics? [Re: Caine]
#14463240 - 05/16/11 05:07 PM (12 years, 8 months ago) |
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i have a family member who is fairly prominent in the physics community. they played a pretty significant role in texas's super collider project and fraternizes with nobel laureates on the reg. really interesting person to sit and have a conversation with over a glass or four of wine. as for me i don't have the mind for math to truly comprehend anything beyond the simpler concepts that my relative or a documentary can show me.
-------------------- I'm up to my ears in unwritten words. - J.D. Salinger
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DeadHearts


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Re: anyone here actually understand Quantum Physics? [Re: BoneMan]
#14463256 - 05/16/11 05:11 PM (12 years, 8 months ago) |
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Quote:
BoneMan said:
Quote:
DeadHearts said: Something that blows my fucking mind is the apparent fact that matter reacts differently when its being observed.

thats a common misconception.. see, in order to observe sub-atomic particles you can't just use a super microscope with an enormous lens or something. quantum physics papers use the term "observe" so loosely and usually fail to explain that in order to observe what the particles are doing, they need to use a detector that necessarily interacts with the particle in some way, most likely being hit by a laser or something. its definitely not just watching that changes the result. the "watching" in this case, involves touching the waves/particles with a detection instrument.
I feel like a child posting this but whatever.
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Doc_T
Random Dude




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Re: anyone here actually understand Quantum Physics? [Re: mellowparty]
#14463258 - 05/16/11 05:11 PM (12 years, 8 months ago) |
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Quote:
mellowparty said: I know that tiny particles can behave as waves but thats about it really 
With several years of math that I don't have, and a couple years of physics I also don't have, apparently you can tell when the light is likely to be a wave vs particle, and where it will be when it is either one.
Which is interesting and all, but not something I would get much use out of.
-------------------- You make it all possible. Doesn't it feel good?
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realfuzzhead



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Re: anyone here actually understand Quantum Physics? [Re: DeadHearts]
#14463261 - 05/16/11 05:12 PM (12 years, 8 months ago) |
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Quote:
DeadHearts said: Something that blows my fucking mind is the apparent fact that matter reacts differently when its being observed.

yeah but this has a different meaning than what most people think. Its not the fact that me, having concsiousness, observing smoething happening changes something that is happening, it is that since to observe something I must shine light on what im observing and therefor interact with it, me interacting with it changes the results
and The elegant Universe is neext on my "To-read" list.
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learningtofly
Ancient Aliens



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Re: anyone here actually understand Quantum Physics? [Re: Doc_T]
#14463268 - 05/16/11 05:13 PM (12 years, 8 months ago) |
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Quote:
Doc_T said:
Quote:
mellowparty said: I know that tiny particles can behave as waves but thats about it really 
With several years of math that I don't have, and a couple years of physics I also don't have, apparently you can tell when the light is likely to be a wave vs particle, and where it will be when it is either one.
Which is interesting and all, but not something I would get much use out of.
understanding the world around us is always useful
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realfuzzhead



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Re: anyone here actually understand Quantum Physics? [Re: learningtofly]
#14463276 - 05/16/11 05:15 PM (12 years, 8 months ago) |
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and no calculus yet, im just a freshman. Next year though..
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CaptainAhab


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Re: anyone here actually understand Quantum Physics? [Re: millzy]
#14463280 - 05/16/11 05:16 PM (12 years, 8 months ago) |
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My physics prof is a particle physicist who's worked at the LHC -- Large Hadron Collider -- and CERN. He also helped design the particle accelerator they use at CERN. He gave us the Feynman books to understand quantum mechanics.
Read the Feynman books.
Love the Feynman books.
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learningtofly
Ancient Aliens



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Re: anyone here actually understand Quantum Physics? [Re: realfuzzhead]
#14463281 - 05/16/11 05:16 PM (12 years, 8 months ago) |
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calculus is easy peasy
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Doc_T
Random Dude




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Re: anyone here actually understand Quantum Physics? [Re: learningtofly]
#14463283 - 05/16/11 05:16 PM (12 years, 8 months ago) |
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Yes, yes it is. Understanding why a particular photon manifests wavelike effects vs particle effects is somewhat less useful.
-------------------- You make it all possible. Doesn't it feel good?
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aNeway2sayHooray
Cresley Wusher




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Re: anyone here actually understand Quantum Physics? [Re: CaptainAhab]
#14463290 - 05/16/11 05:18 PM (12 years, 8 months ago) |
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There are some good reading suggestions in this thread.. Thanks guys!!!! I am bookmarking this.
-------------------- Mad_Larkin said: Death is just a thang.
MrJellineck said: Profits, prophets. That's all you jews think about. sheekle said: life is drugs... and music... and cat...
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ShroomBerry
Stranger

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Re: anyone here actually understand Quantum Physics? [Re: realfuzzhead]
#14463295 - 05/16/11 05:19 PM (12 years, 8 months ago) |
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Carefully reading a book (The Physics of Stargates) that's helping me understand some of that. But, man, I gotta re-read the deep stuff about parallel universes, 'cause it blows my mind!
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ifoundwaldo


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Re: anyone here actually understand Quantum Physics? [Re: realfuzzhead]
#14463301 - 05/16/11 05:21 PM (12 years, 8 months ago) |
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Quote:
realfuzzhead said: and no calculus yet, im just a freshman. Next year though..
derivative is the rate of change. integral is the area under the curve.
you're 20% done.
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millzy


Registered: 05/12/10
Posts: 12,404
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Re: anyone here actually understand Quantum Physics? [Re: realfuzzhead]
#14463322 - 05/16/11 05:24 PM (12 years, 8 months ago) |
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Quote:
realfuzzhead said: and The elegant Universe is neext on my "To-read" list.
watch the nova episode. i'm sure the book goes a lot more in depth, but it's like 3 hours. one of the best doc's i've seen on the subject. you can watch it online on pbs's nova website too.
-------------------- I'm up to my ears in unwritten words. - J.D. Salinger
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mellowparty
legitimate researcher


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Re: anyone here actually understand Quantum Physics? [Re: realfuzzhead]
#14463342 - 05/16/11 05:28 PM (12 years, 8 months ago) |
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Quote:
realfuzzhead said: and no calculus yet, im just a freshman. Next year though..
Calculus 101
∫kxndx=k∫xndx=kxn+1/(n+1)+C
Its essentially the opposite of derivatives. I spent last summer reading calculus and how it relates to real life situations like radioactive decay or water leaking out of broken barrels and shit Its quite fun 
Now do this 2x0.5 
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pfxtc
RUEXP?


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Re: anyone here actually understand Quantum Physics? [Re: mellowparty]
#14463358 - 05/16/11 05:30 PM (12 years, 8 months ago) |
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I can't understand math for a fucking second... I left High School in Geometry and had a hard time with that 
It just makes NO sense to me.
-------------------- koods said: Young male going by the name "Bassfreak" entered Worcester General complaining of a sharp pain in his buttock region after attending EDM event. Attending physician considered a possible diagnosis of acute rave anus, but upon further investigation it was determined there was nothing cute about patient's anus. Life-long trip report
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mellowparty
legitimate researcher


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Re: anyone here actually understand Quantum Physics? [Re: pfxtc]
#14463383 - 05/16/11 05:33 PM (12 years, 8 months ago) |
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Probably cause you had a bad teacher. I've taught myself a bunch of stuff and it was fucking hard sitting down trying to understand the concept behind stuff like complex numbers and integration etc. But once you get the basics it all builds up easily on it afterwards.
I think amphetamines are good for maths. Pimps you brain n shit.
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DeadHearts


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Re: anyone here actually understand Quantum Physics? [Re: mellowparty] 1
#14463393 - 05/16/11 05:35 PM (12 years, 8 months ago) |
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Quote:
mellowparty said: Probably cause you had a bad teacher. I've taught myself a bunch of stuff and it was fucking hard sitting down trying to understand the concept behind stuff like complex numbers and integration etc. But once you get the basics it all builds up easily on it afterwards.
I think amphetamines are good for maths. Pimps you brain n shit.
Gotta have the right teacher a good memory. Because if you dont have a solid fuckin memory and you do not use the math everyday like most people do not. You will lose the knowledge.
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mellowparty
legitimate researcher


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Re: anyone here actually understand Quantum Physics? [Re: DeadHearts]
#14463448 - 05/16/11 05:43 PM (12 years, 8 months ago) |
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What I like about maths is that you dont really have to remember much. Just some basic rules, a couple of formulas and you can suck the rest out of your fingers. The lazy mans way
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pfxtc
RUEXP?


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Re: anyone here actually understand Quantum Physics? [Re: mellowparty]
#14463465 - 05/16/11 05:46 PM (12 years, 8 months ago) |
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I have a hard time with things I can't touch I suppose..
and I forget what mathemetician (sp?) it was but he said if you stared at a blank piece of paper sober, nothing would come, but if he took amphetamines a million ideas would implant themselves on the paper, all he had to do was write.
-------------------- koods said: Young male going by the name "Bassfreak" entered Worcester General complaining of a sharp pain in his buttock region after attending EDM event. Attending physician considered a possible diagnosis of acute rave anus, but upon further investigation it was determined there was nothing cute about patient's anus. Life-long trip report
Edited by pfxtc (05/16/11 05:52 PM)
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millzy


Registered: 05/12/10
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Re: anyone here actually understand Quantum Physics? [Re: pfxtc]
#14463503 - 05/16/11 05:50 PM (12 years, 8 months ago) |
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some people are just not wired for math, with myself being one of them. i excel at assimilating and analyzing chunks of data, writing and dealing with abstract philosophical concepts, but i struggle with math. it takes a specific type of mind to be good at it, like anything else.
-------------------- I'm up to my ears in unwritten words. - J.D. Salinger
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mellowparty
legitimate researcher


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Re: anyone here actually understand Quantum Physics? [Re: pfxtc]
#14463526 - 05/16/11 05:53 PM (12 years, 8 months ago) |
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Paul Erdős
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pfxtc
RUEXP?


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Re: anyone here actually understand Quantum Physics? [Re: millzy]
#14463533 - 05/16/11 05:53 PM (12 years, 8 months ago) |
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As a kid I was REALLY creative but as I got older it seemed like I was more "in the middle" as far as the left brain VS right brain thing goes... so I'm incredibly average at both "logic thinking" and "creative thinking"... I'm weird
-------------------- koods said: Young male going by the name "Bassfreak" entered Worcester General complaining of a sharp pain in his buttock region after attending EDM event. Attending physician considered a possible diagnosis of acute rave anus, but upon further investigation it was determined there was nothing cute about patient's anus. Life-long trip report
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millzy


Registered: 05/12/10
Posts: 12,404
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Re: anyone here actually understand Quantum Physics? [Re: pfxtc]
#14463581 - 05/16/11 05:59 PM (12 years, 8 months ago) |
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i think it's more of a problem solving mindset than anything. it's the engineer mentality versus the philosopher mentality, so to speak. neither are superior to the other. i wish i was better at math and definitely admire people with that ability, but when i talk to my friends who work in heavily math driven fields, they sometimes learn from me when we get into more philosophical territory.
-------------------- I'm up to my ears in unwritten words. - J.D. Salinger
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realfuzzhead



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Re: anyone here actually understand Quantum Physics? [Re: millzy]
#14463621 - 05/16/11 06:04 PM (12 years, 8 months ago) |
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...
mind still blown at Quantum physics..
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realfuzzhead



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Re: anyone here actually understand Quantum Physics? [Re: learningtofly]
#14463637 - 05/16/11 06:06 PM (12 years, 8 months ago) |
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Quote:
learningtofly said: you're confusing common sense with intuition 
Yeah I meant to say counter-intuitive,
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starfire_xes
I Am 'They'



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Re: anyone here actually understand Quantum Physics? [Re: realfuzzhead]
#14463642 - 05/16/11 06:07 PM (12 years, 8 months ago) |
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Yes.
--------------------
    [/url] [/url]
IF THE NEIGHBORS COMPLAIN BECAUSE THE MUSIC'S TOO LOUD, TURN IT UP SO YOU CAN'T HEAR THEM BITCH
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pfxtc
RUEXP?


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Re: anyone here actually understand Quantum Physics? [Re: millzy]
#14463656 - 05/16/11 06:09 PM (12 years, 8 months ago) |
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Quote:
millzy said: i think it's more of a problem solving mindset than anything. it's the engineer mentality versus the philosopher mentality, so to speak. neither are superior to the other. i wish i was better at math and definitely admire people with that ability, but when i talk to my friends who work in heavily math driven fields, they sometimes learn from me when we get into more philosophical territory.
Yeah well I can spout shit about "philosophy" all day but in the end I don't really "know" a fucking thing. Math is the opposite, math is proof, at least some times... that's why I wish I was better at it.
-------------------- koods said: Young male going by the name "Bassfreak" entered Worcester General complaining of a sharp pain in his buttock region after attending EDM event. Attending physician considered a possible diagnosis of acute rave anus, but upon further investigation it was determined there was nothing cute about patient's anus. Life-long trip report
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thoughts
imagining.


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Posts: 16,816
Loc: here.
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Re: anyone here actually understand Quantum Physics? [Re: pfxtc]
#14464104 - 05/16/11 07:26 PM (12 years, 8 months ago) |
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All i remember is learning thangs about electrons being able to be in 2 places at once...so that means we could be in two places at once (parallel universes)
Is it possible all of this (the universe) is just what the inside of an electron is made of?
-------------------- I need Jesus.
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Mr. Anderson
πριν από το χρόνο κάποιου


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Re: anyone here actually understand Quantum Physics? [Re: thoughts]
#14464112 - 05/16/11 07:27 PM (12 years, 8 months ago) |
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I spend a lot of time pondering the same things trying to piece together the theory of everything.
I remember learning the same thing about the electrons of an atom, I know where your coming from with this.
This is the stuff that fascinates me.
tuned in for debate
--------------------
Disclaimer: All posts are completely fictional and or for educational purposes only.
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thoughts
imagining.


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Re: anyone here actually understand Quantum Physics? [Re: Mr. Anderson]
#14464158 - 05/16/11 07:36 PM (12 years, 8 months ago) |
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What's a good book on this subject?
-------------------- I need Jesus.
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KrishnaDreamer
I bleed nicotine...


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Re: anyone here actually understand Quantum Physics? [Re: thoughts]
#14464207 - 05/16/11 07:44 PM (12 years, 8 months ago) |
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i once read that there was a one in (insert obscenely large number here) chance that your hand could go through a wall due to all the electrons lining up.
-------------------- Everybody's a ninja...
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Vsnares.Zappa
bend over


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Re: anyone here actually understand Quantum Physics? [Re: thoughts]
#14464215 - 05/16/11 07:45 PM (12 years, 8 months ago) |
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"I think I can safely say that nobody understands Quantum physics" - Richard feynman “Science is the belief in the ignorance of the experts”- Richard feynman
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thoughts
imagining.


Registered: 10/06/07
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Re: anyone here actually understand Quantum Physics? [Re: KrishnaDreamer]
#14464221 - 05/16/11 07:46 PM (12 years, 8 months ago) |
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That's awesome, i did that in this lucid dream i had.
-------------------- I need Jesus.
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realfuzzhead



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Re: anyone here actually understand Quantum Physics? [Re: Mr. Anderson]
#14464383 - 05/16/11 08:10 PM (12 years, 8 months ago) |
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Quote:
Mr. Anderson said: I spend a lot of time pondering the same things trying to piece together the theory of everything.
I remember learning the same thing about the electrons of an atom, I know where your coming from with this.
This is the stuff that fascinates me.
tuned in for debate
man I could read books about this stuff for decades. From Carl Sagan blowing my mind putting everything into perspective, to Quantum Physics twisting my reality like a drunk driver around a metal pole.. to Hawking and other experts talking about string theory.
So epic. IWasaclown and anyone else I would HIGHLY suggest going to your local library RIGHT NOW and getting Pale Blue Dot by Mr. Sagan.
Best book i have ever read. Sparked my interest in reading like no other..
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realfuzzhead



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Re: anyone here actually understand Quantum Physics? [Re: thoughts]
#14464431 - 05/16/11 08:16 PM (12 years, 8 months ago) |
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Quote:
KrishnaDreamer said: i once read that there was a one in (insert obscenely large number here) chance that your hand could go through a wall due to all the electrons lining up.

Quote:
iwasaClown said: All i remember is learning thangs about electrons being able to be in 2 places at once...so that means we could be in two places at once (parallel universes)
Is it possible all of this (the universe) is just what the inside of an electron is made of?
its not so much that they are in two places at once, it that each space throughout the field has a particular "probability-density" that the electron will be there at that point in time. It was first interpreted to mean that they are nowhere in between point A and B, but was then realized in can equally mean they are everywhere inbetween point A and B. They take all possible paths and by adding up through a process known as "sum over histories" you get the probability density very near 1 that an electron will take a specific path more closely recognizable by the Newtonian laws of motion.
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Carl Sagan
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Re: anyone here actually understand Quantum Physics? [Re: Mr. Anderson]
#14464447 - 05/16/11 08:19 PM (12 years, 8 months ago) |
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The mysterious quantum world... I try to read about some of the laws and stuff, but it
is tough reading. All I really remember was that standard Newtonian psychics, along
with general relativity could explain/predict our world as we see it through the
classical laws. The laws that govern the quantum world of sub-atomic particles/waves
also apply the the "macro world". Because everything in our world is made up of atoms
and molecules that are made up of sub atomic particles. It is very interesting though.
I seems very likely that quantum science will be on the forefront of innovation in the
coming century. Understanding things like dark matter and energy, and being able to
predict (mathematically) how they will act under different circumstances will give us
a much greater understanding of the universe. Science is on like a hyper drive of
innovation right now. Consider just the past hundred years. Einstein, Tesla, and all
of the engineering advances. Each field of study pulls and feeds another. With each
advancement in electrical engineering/mechanics giving new tools to another field
its almost as if the advances are becoming compound or even exponential. It is a
very exciting time to be alive! With the Large Hadron Collider searching for particles
like higgs-boson, to give us a greater understanding of the details involved in creating
the universe. If found this will be a huge advance in quantum science, and helping
to further quantum science on the path of developing the TOE Theory Of Everything.
Answering ALL of the questions that humans have pondered since we had the ability.
Questions like why am I here, what is the purpose of my existence, i don't want to
dive deep into philosophy, but these are huge questions that have been a part of the
human condition since there was a human condition. 
If im wrong about something in the preceding paragraph feel free to message me with racial slurs, riddled with references to homosexuality.
-------------------- “Sacred cows make the best hamburger” Mark Twain Independant Research Foundation
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The Whale

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Re: anyone here actually understand Quantum Physics? [Re: Carl Sagan]
#14464470 - 05/16/11 08:22 PM (12 years, 8 months ago) |
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Vsnares.Zappa
bend over


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Re: anyone here actually understand Quantum Physics? [Re: Carl Sagan]
#14464485 - 05/16/11 08:23 PM (12 years, 8 months ago) |
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DieCommie

Registered: 12/11/03
Posts: 29,258
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Re: anyone here actually understand Quantum Physics? [Re: realfuzzhead]
#14464495 - 05/16/11 08:25 PM (12 years, 8 months ago) |
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Quote:
realfuzzhead said: I know quite a few of us here are familiar with Schrödinger's experiments and the apparent wave/particle duality of microscopic particles, I know alot of us here have a decent understanding of the Qualitative explanations of Quantum Physics but does anyone have a Quantitative understanding of it?
Like does anyone here actually understand the Standard Model? OR the Feynman Diagrams? Or the probability density of particles?
Ive been reading very heavily into Quantum physics, and man it is some HARD SHIT. Common sense has absolutely no place here.. but it is all so interesting. I plan on taking at least some classes that tie into this but I was wondering if anyone here has done this before?
how hard was it?
I got my degree in physics, took lots of quantum both in undergrad and in grad school. Its great stuff, fun and trippy. All science is interesting, but quantum and relativity make physics the most interesting IMO. There are a few of us with some quantum knowledge in the science forum if you have any questions or thoughts.
edit - You are wondering how hard it is to get a physics degree? Its hard work, but most anybody can do it with enough drive and sacrifice. Undergraduate quantum can be fairly easy, not all programs go into it that deep in undergrad. Or it can be really hard, and over the top. It varies alot depending on your school and teacher.
Edited by DieCommie (05/16/11 08:32 PM)
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realfuzzhead



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Re: anyone here actually understand Quantum Physics? [Re: DieCommie]
#14464526 - 05/16/11 08:29 PM (12 years, 8 months ago) |
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Read some bad reviews on The Elegant Universe.. supposedly there are alot of people spreading String Theory and passing off speculation as fact. Think I might hold off on that book for a while
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DieCommie

Registered: 12/11/03
Posts: 29,258
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Re: anyone here actually understand Quantum Physics? [Re: realfuzzhead]
#14464565 - 05/16/11 08:34 PM (12 years, 8 months ago) |
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Quote:
realfuzzhead said:

Read some bad reviews on The Elegant Universe.. supposedly there are alot of people spreading String Theory and passing off speculation as fact. Think I might hold off on that book for a while
The best parts, I think, are where he describes quantum and relativity. Most pop-physics books follow a similar recipe, attempt to describe quantum and relativity as well as you can for 2/3 of the book and then spend the last third on whatever crazy notion the author is writing about.
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realfuzzhead



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Re: anyone here actually understand Quantum Physics? [Re: DieCommie]
#14464577 - 05/16/11 08:36 PM (12 years, 8 months ago) |
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cool cool yeah you are right about that.. Ptolmic model to Galileo to Newton to Einstien to Maxwell to Feymann etc et all.
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Carl Sagan
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Re: anyone here actually understand Quantum Physics? [Re: DieCommie]
#14464590 - 05/16/11 08:38 PM (12 years, 8 months ago) |
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Dark Energy is tearing the universe apart.... We don't really know why the electron follows
it's path around the nucleus. We can predict where it will be 90% of the time.
We know how many there are in 118 elements, and then to think about the
nucleus and all the sub-atomic particles and the work of quantum mechanics. 
For all we know, the grater polarity of our planet, or even some greater force that
we don't truly understand is one big fucking proton. And the nuclear (neutron) forces from
the sun hold us in our orbital path. Like the neutron in a nucleus of an atom.
We do not know what Dark Energy is. It is a force,
maybe its one big proton without any neutrons to bind it to anything. Dark Matter
constitutes 75% of all mass energy in the universe, and we have no idea where any of this
energy comes from. All we know is that its a force that is stretching the universe
apart. Then we have Dark Matter holding galaxies together. That's all we really know.
Oh and that Dark Matter constitutes 83% of all matter in the universe. Man we really
have no fucking idea whats going on at the sub-atomic level or on the macrocosmic
level. Its so exciting. The electrons in an atom bind to other atoms together to make
complex molecules. The energy released creates the bond. For all we know Dark
Matter is the neutron, and Dark Energy is the proton, and the planet earth is just
one big electron.
This was just stoned babble that was running through my head the other night. I figured i would post it here hoping that someone with a greater understanding about the laws of psychics would be able to tear this all part with facts. I am aware of Einstein's space time fabric explanation of gravity. And I can think of one area in my writing that could be destroyed by the application. I know that quantum science is investigating what the space time fabric consists of. I just don't know where they are yet?
-------------------- “Sacred cows make the best hamburger” Mark Twain Independant Research Foundation
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Carl Sagan
Time Dilation Analyst


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Re: anyone here actually understand Quantum Physics? [Re: DieCommie]
#14464644 - 05/16/11 08:46 PM (12 years, 8 months ago) |
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Quote:
DieCommie said:
Quote:
realfuzzhead said:

Read some bad reviews on The Elegant Universe.. supposedly there are alot of people spreading String Theory and passing off speculation as fact. Think I might hold off on that book for a while
The best parts, I think, are where he describes quantum and relativity. Most pop-physics books follow a similar recipe, attempt to describe quantum and relativity as well as you can for 2/3 of the book and then spend the last third on whatever crazy notion the author is writing about. 
I did not think that quantum theory could be applied to general relativity? I guess I missed something. Which is highly probable as I am only able to dip a toe or two into the subatomic universe before I melt.
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realfuzzhead



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Re: anyone here actually understand Quantum Physics? [Re: Carl Sagan]
#14464772 - 05/16/11 09:07 PM (12 years, 8 months ago) |
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you can't. I believe its because you can't quantize the field for gravity without getting infinity somewhere in the answer. This is where string play supposedly comes in, giving the gravatron more mass than zero and a length larger than the plank length therefor in would weed out the infinity.
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shroomer33
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Re: anyone here actually understand Quantum Physics? [Re: realfuzzhead]
#14476434 - 05/19/11 12:47 AM (12 years, 8 months ago) |
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Quote:
realfuzzhead said: I know quite a few of us here are familiar with Schrödinger's experiments and the apparent wave/particle duality of microscopic particles, I know alot of us here have a decent understanding of the Qualitative explanations of Quantum Physics but does anyone have a Quantitative understanding of it?
Like does anyone here actually understand the Standard Model? OR the Feynman Diagrams? Or the probability density of particles?
Ive been reading very heavily into Quantum physics, and man it is some HARD SHIT. Common sense has absolutely no place here.. but it is all so interesting. I plan on taking at least some classes that tie into this but I was wondering if anyone here has done this before?
how hard was it?
Quantum mechanics is easy. Quantum field theory is a bitch.
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Diabolical prismatic streaks of bitterness frame the grim and frostbitten dawn; their furious glow enthroned upon arctic heavens, destined to reign above Lucifer’s Windows XP desktop wallpaper for all eternity.
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shroomer33
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Re: anyone here actually understand Quantum Physics? [Re: BoneMan]
#14476472 - 05/19/11 12:59 AM (12 years, 8 months ago) |
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Quote:
BoneMan said:
Quote:
DeadHearts said: Something that blows my fucking mind is the apparent fact that matter reacts differently when its being observed.

thats a common misconception.. see, in order to observe sub-atomic particles you can't just use a super microscope with an enormous lens or something. quantum physics papers use the term "observe" so loosely and usually fail to explain that in order to observe what the particles are doing, they need to use a detector that necessarily interacts with the particle in some way, most likely being hit by a laser or something. its definitely not just watching that changes the result. the "watching" in this case, involves touching the waves/particles with a detection instrument.
I think he's talking more about nonlocality, which is truly freaky. Check out Bell's Theorem and the related experiments. Basically, a particle can decay into, say, an electron and a positron. Both fly off in different directions. Each have a wavefunction that is a mixture of two states, spin up and spin down. When one of the particles is observed, the wavefunction collapses into a definite spin state. AT THE SAME TIME, the other particle's wavefunction collapses to conserve angular momentum. This means that somehow information has traveled faster than light. What changed the wavefunction of the unobserved particle? Was it the observation of the observed particle? It looks that way.
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Diabolical prismatic streaks of bitterness frame the grim and frostbitten dawn; their furious glow enthroned upon arctic heavens, destined to reign above Lucifer’s Windows XP desktop wallpaper for all eternity.
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shroomer33
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Re: anyone here actually understand Quantum Physics? [Re: realfuzzhead]
#14476509 - 05/19/11 01:17 AM (12 years, 8 months ago) |
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Quote:
realfuzzhead said:
Quote:
KrishnaDreamer said: i once read that there was a one in (insert obscenely large number here) chance that your hand could go through a wall due to all the electrons lining up.

Quote:
iwasaClown said: All i remember is learning thangs about electrons being able to be in 2 places at once...so that means we could be in two places at once (parallel universes)
Is it possible all of this (the universe) is just what the inside of an electron is made of?
its not so much that they are in two places at once, it that each space throughout the field has a particular "probability-density" that the electron will be there at that point in time. It was first interpreted to mean that they are nowhere in between point A and B, but was then realized in can equally mean they are everywhere inbetween point A and B. They take all possible paths and by adding up through a process known as "sum over histories" you get the probability density very near 1 that an electron will take a specific path more closely recognizable by the Newtonian laws of motion.
Also, there is the uncertainty principle that allows particles to be two places at once, or smeared out, if you will. With all of this quantum mechanics stuff, there is a lot that is just interpretation. There are also different mathematical methods to get the same answers. Bohm had a completely different interpretation of quantum mechanics than what gets taught in school, but even he came to some really bizarre conclusions about quantum mechanics. Do a google search for Bohm and quantum mechanics. You should find some cool shit.
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Diabolical prismatic streaks of bitterness frame the grim and frostbitten dawn; their furious glow enthroned upon arctic heavens, destined to reign above Lucifer’s Windows XP desktop wallpaper for all eternity.
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bryguy27007
Cosmonaut



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Re: anyone here actually understand Quantum Physics? [Re: shroomer33]
#14476542 - 05/19/11 01:34 AM (12 years, 8 months ago) |
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I'm posting for my threads. I read a lot of pop-science in high school and got really interested in quantum physics and science. I started going to school for astrophysics and changed shortly afterwards. I will leave the number crunching to the professionals, just tell me the implications. It is all very interesting, but I will keep the reading to laymen level and keep it as a hobby and not a profession.
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shroomer33
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Re: anyone here actually understand Quantum Physics? [Re: realfuzzhead]
#14476543 - 05/19/11 01:35 AM (12 years, 8 months ago) |
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Quote:
realfuzzhead said: I know quite a few of us here are familiar with Schrödinger's experiments and the apparent wave/particle duality of microscopic particles, I know alot of us here have a decent understanding of the Qualitative explanations of Quantum Physics but does anyone have a Quantitative understanding of it?
Like does anyone here actually understand the Standard Model? OR the Feynman Diagrams? Or the probability density of particles?
Ive been reading very heavily into Quantum physics, and man it is some HARD SHIT. Common sense has absolutely no place here.. but it is all so interesting. I plan on taking at least some classes that tie into this but I was wondering if anyone here has done this before?
how hard was it?
Thats what she said.
I get most of the standard model and its formulation. Any questions?
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Diabolical prismatic streaks of bitterness frame the grim and frostbitten dawn; their furious glow enthroned upon arctic heavens, destined to reign above Lucifer’s Windows XP desktop wallpaper for all eternity.
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ifoundwaldo


Registered: 09/28/10
Posts: 8,389
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Re: anyone here actually understand Quantum Physics? [Re: thoughts]
#14476985 - 05/19/11 05:34 AM (12 years, 8 months ago) |
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Quote:
iwasaClown said: What's a good book on this subject?
Haven't read many books on the subject, but I used to search around the Internet and find all the information my little head could contain.
I really enjoyed Hawking's "A Brief History of Time." It is definitely written for the layman. It starts with the basics (Newtonian physics) and covers most of the interesting topics of relativity and quantum physics.
The chapters are short, but the writing is very dense in points. This would be my only complaint: Hawking sometimes compounds a lot of hard-to-visualize concepts into a single sentence, and some of these sentences took multiple reads before I could say, "I think I have an idea of what he's saying." 
I guarantee that even if you only read chapter 2, you'll enjoy the read.
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Fungal-one
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Re: anyone here actually understand Quantum Physics? [Re: ifoundwaldo]
#14477047 - 05/19/11 06:05 AM (12 years, 8 months ago) |
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This is why vortex based mathematics are sofa king awesome. It shows that nature has a deeper, more elegant pattern that doesn't need greek symbols in her description. The days of chemistry and physics and higher science in general being dependent upon long cumbersome equations are coming to an end.
-------------------- Never judge a man until you walk a mile in his shoes. But, by that time you're a mile away and you got his shoes, so fuck em.
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