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Hey physics undergrad here.
Idk if this belongs in /adv/ or not, but I was talking to my profs and they said that in physics if you don't plan on going for PhD (which I am) then you've wasted your undergrad. They also said that a really popular job for people in physics while they're in grad school is teaching high school. Is this true? If it is, is it that bad?
Pic unrelated
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>>9164961
Yes. If you go to any employer they'll tell you you need at least a master's in physics to be a chad. Its literally the only accurate portrayal of physics in all of the big bang theory.
If you're lucky, you can find a finance or engineering job with just a bachelor's but you're competing with other majors then. You can also teach high school with a bachelor's if you become certified.
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>>9165027
Is that smart at all to do teaching while in doctoral school or is it waste of time putting me behind on Industry experience
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>>9165034
Guys I know in grad school are either doing research or industry work. My long term plan is teaching tho it sounds p good
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Sci, we're reaching a massive paradigm shift, and we can either accept reality or fervently deny it, as the inferior caste denied the heliocentric model of the solar system. You may have realized that I am talking about race.
Why do I still see so many people getting upset by the assertion that races are inherently different -- on a purported 'science' forum? This is some really basic statistics/probability, and, frankly, it shouldn't be this difficult to understand.
Studies and statistics aside, this should be obvious from a very rudimentary understanding of evolutionary biology. Populations separated by space and time tend to evolve and adapt differently. Why would anybody believe that all differences are only skin deep?
The best part is that I can say this without an ounce of hate in my body. This is not a call to begin hating or committing violence against certain races. This is simply the reality of the situation we have found ourselves in. It would be unscientific to deny it any longer.
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>>9164934
>as the inferior caste denied the heliocentric model of the solar system
What the fuck are you going on about.
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>>9164934
Something something reddit spacing
Something sometime /pol/
Something something nigger
Something something people ignoring statistics
The thread goes nowhere and we all wasted our time, The End.
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>>9164942
People dogmatically held onto the idea that the Earth must be at the center of the universe... This kind of thinking is not new. My wording was quite clear.
>>9164944
This is a waste of time? What a brainlet response.
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>What is the mass of the sucrose in a 500mL solution with 10% sucrose?
Why are biologists such massive retards? I'm a senior in college and I'm finishing a chemistry and physics double degree this year yet these intro-to-bio TA cunts have the tenacity to take points off my quiz when I told them their questions are impossible to answer.
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Don't be such a faggot. How hard is it to ask if they meant wt% or % by volume.
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>>9164924
I'm pretty sure they're not even aware of the distinction. They gave a powerpoint presentation (that they made themselves) where they gave an example of a '%' problem where they once again neglected to specify by weight or by volume.
They also do stupid shit like writing g/mL^3 when talking about density.
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>>9164929
I hope this in not in the US of A
Anonymous
Quantum State Vectors - Dirac Notation 2017-09-12 10:48:57 Post No.9164567
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Quantum State Vectors - Dirac Notation 2017-09-12 10:48:57 Post No.9164567
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Quantum State Vectors - Dirac Notation
Anonymous
2017-09-12 10:48:57
Post No. 9164567
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Hey all, I'm slightly lost on the meaning and methods of the dirac notation for quantum state vectors. Specifically, pic related #1.2a.
It's telling me to find a normalized vector |φ> that is orthogonal to each |ψ>.
I'm not quite sure what I'm supposed to be solving for here. I know that: <+|+> = <-|-> = 1 AND <+|-> = <-|+> = 0.
So... so I pick some |φ> = a|+> + b|-> and say: <φ|ψ> = 0 = <ψ|φ> (because they are orthogonal?) and solve?
I know that this board isn't for homework problems to be solved, and that's not what I'm looking for explicitly. I'm wondering what resources you guys would recommend to get a handle on this dirac notation and the concepts behind these things.
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>mfw physicist can't into elementary linear algebra
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>mfw physicists still teach QM with bra-cuck notation.
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>>9164577
It's so stupid. It's throwing me off. Matrix notation is so much better.
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literally what? wouldn't t be a free variable here? wouldn't the solutions just be
x1=6y-3t-2
x2=y
x3=-34t+7
x4=-5t+8
x5=t
why was this whole "make it in terms of w" needed? am i insane here?
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>>9164419
In the first step it says that t is not a free variable. Whoever wrote this solution is retarded though.
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>>9164463
I dont understand. Its not a leading variable.
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>>9164481
It clearly is. Since it was defined that way. Would help if you showed the entire problem though.
Anonymous
/sci/, why is my right elbow different than my left elbow? 2017-09-12 07:01:01 Post No.9164213
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/sci/, why is my right elbow different than my left elbow? 2017-09-12 07:01:01 Post No.9164213
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/sci/, why is my right elbow different than my left elbow?
Anonymous
2017-09-12 07:01:01
Post No. 9164213
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If your right elbow was the same as your left elbow, then you would have two left elbows, or, equivalently, two right elbows. This would completely destroy the logic behind the definitions of "left" and "right".
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>>9164268
I meant the way it comes together, Right comes together in a straight line while the left makes a triangle
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>>9164279
You think we give a fuck about your weirdly-shaped elbows you inbred baboon? We're trying to do science and math over here.
Intellectuals only ITT.
Today we will be discussing mass-energy equivalence. Did you know it's a proven fact that the total mass (weight) of a system changes based on how much energy is in that system? This explains the other fact of why the weight of all atoms is less than the combined weight of their constituent parts. When energy is adding mass, the amount of mass that is added by energy is equal to the amount of energy divided by c-squared. That is the "equivalence" of mass and energy. Energy is the same thing as small mass without inertia and vice versa.
Discuss mass-energy equivalence and share information.
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Do hotter objects have more mass then?
If I had, for example, 1 mole of sodium chloride, would it be measurably more massive at 100 degrees than at 0 degrees?
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>>9164020
Yes that's actually true. But remember in practice, the amount of mass added by energy is very low relatively speaking. C-squared is an enormous number.
But, if you have two objects that are the same mass before heating, and heat one up, and your tools are accurate enough, you would notice a difference where the hotter object weighs more.
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>>9164016
"Weight" is measured in units of Newton (like Force), but okay, yeah.
>>9164020
"yes"
The point is to simply drop mass from the vocabulary. In Quantum field theory, "mass" is only a coeffcient in some energy density expression (Lagrangian) and notions associated with mass are "effective" ones that emergy. If you were to accept quantum field theory and general relativity, then there is only space and time and energy and mass and a bunch of derived quantities are really just [spoiler]frequency[/spoiler], i.e. quantity per time, i.e. one over time.
In the raw system, Entropy is also unitless and Temperature is just energy (which is just frequency)
Anonymous
Does anybody else underdog your class mates 2017-09-12 03:54:41 Post No.9164001
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Does anybody else underdog your class mates 2017-09-12 03:54:41 Post No.9164001
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Does anybody else underdog your class mates
Anonymous
2017-09-12 03:54:41
Post No. 9164001
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How to underdog brainlets and seem like a genius:
step 1: when in class slack and joke around with people without doing any work.
step 2: spend every single second outside the classroom studying to get top grades.
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Lol what?
why would anybody do this?
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>>9164054
overcompensating for undersized genitalia
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This type of behaviour is typically driven by massive insecurities. Are you a loser by any chance?
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why are brainlets seemingly so incapable of making rough approximations and averages? why do they always respond with shit like "it depends" or "every day is different" to simple questions like ones assign about the length of their daily commute?
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Well it depends.
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>>9164000
Every brainlet is different.
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What, me generalize?
Anonymous
11-D Structures in the brain? 2017-09-12 03:53:05 Post No.9163997
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11-D Structures in the brain? 2017-09-12 03:53:05 Post No.9163997
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11-D Structures in the brain?
Anonymous
2017-09-12 03:53:05
Post No. 9163997
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Hey /Sci/, layperson here with a casual interest in science and mathematics.
I recently came across this paper that presents a case for higher dimensional structures in the human brain.
What conclusions can we draw from this?
If I assert, for example, that this seems to imply that this lays the groundwork for defining human consciousness as a mathematical dimension, is this a leap too far?
What else might this imply? What hypotheses can we formulate from this paper?
Any help decoding this paper into layspeak would be much appreciated.
http://journal.frontiersin.org/article/10.3389/fncom.2017.00048/full
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You're asking the wrong place.
We're all concerned solely with triple parentheses and large foreheads here.
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>>9163997
It's crap
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>>9164053
The paper is crap?
Why?
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Can someone help a brainlet out?
How do I show that
[math]\mathscr{T}= \{U \subseteq \mathbb{N} \mid \mathbb{N} - U \hspace{2mm} \textrm{is finite or} \hspace{2mm} 1 \in (\mathbb{N} - U) \} [/math]
Is
1) A topology
2) Is Hausdorff
I get how to show the cofinite topology is a topology but I don't know how to include the case where 1 is in the set difference.
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>>9163804
1) a topology
Just check that intersection of 2 open sets is open and any union of open sets is open. Which of these is not obvious?
2) is Hausdorff
For each n \in \N holds {n} \in T. So each 2 point can be divided.
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>>9163804
>those tits
I would help you if I was a mathead
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level 4, took 2 hours, drank quite a bit tho. interested in what yall got
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>>9163352
Playing rn
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>>9163367
lol I fucked up
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How do you catch up with more advantaged minds when you've fallen behind? I grew up wasting my time playing video games and watching anime all day instead of kindling a fascination with an intellectual pursuit. I didn't do anything special in high school. I wasted about the first two years of college before settling on the degree path I'm on now. It really bothers me that there are college freshmen out there who know more than I do because they were already interested in the subject in high school and studied by themselves.
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>>9163204
In the grand scheme of things, 3-4 years doesn't actually matter. Especially not high-school level "self study". All that matters is how you spend your time now.
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>>9163204
Find an intellectual niche no one else has thought to get into or wants to get into.
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>>9163239
>high school level "self study"
Fite me, been studying programming and CS hardcore for the past year and I have a job now
Anonymous
How deeply have you been washed by a foreign adversary anon? 2017-09-12 03:54:26 Post No.9163198
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How deeply have you been washed by a foreign adversary anon? 2017-09-12 03:54:26 Post No.9163198
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How deeply have you been washed by a foreign adversary anon?
Anonymous
2017-09-12 03:54:26
Post No. 9163198
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How does it feel knowing that all climate skepticism and/or denial ideas perpetuated on this board/other boards on this site are a result of the endless barrage of propaganda from Russian operatives in order to maintain resistance within the public. This is also true with most pro Trump political posts on pol. Russia has everything to gain from climate change, trade routes, arable farmland from melted permafrost, and a completely flooded western civilization. Stop being a worthless sheep getting fucked down your gullible throat with Russian cock. Fight for truth and death to traitors.
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>>9163198
wait i thought it was the jewwwwwws
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what's wrong with climate skepticism?
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>>9163200
Not a time to joke anon. Do your geopolitical research instead of stroking yourself. The truth is in your face
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Why doesn't this shit ever work?
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Because medfags are glorified chemmonkeys.
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>>9162887
Aspirin and salicylic acid are much better painkillers.
Take at your own risk though.
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>>9162895
you mean acetylsalicylic acid?