Archived threads in /sci/ - Science & Math - 43. page
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I'm a chemist and my cousin, younger than me by 12 years, has asked me for a semestral project they could do. For the love of me, I've been doing post-grad work for the past six years that I can't recommend stuff she could do anymore. I don't want to disappoint so I'm asking for ideas for projects.
They will be in a group of 4 iirc. The project can run for about 2-3 months. They have access to a chemical laboratory.
To give an idea of the level of research they can do, they extracted from leaves last year and tested that for anti-bacterial properties.
>>8172966
This is a short project idea but what about the separation of acetic acid from pyro oil/biocrude? (via extraction and/or distillaiton)
They could use some kind of oil (vegetable or other kitchen oil) to simulate the pyro oil and just add vinegar to it.
For example, they can add water and separate aq phase from the organic phase. Then they measure the amount of acetic acid extracted by the pH. (they could obtain the pH by titration or a calibrated pH probe)
They could check the effects of T, P, acetic acid concentration, or something on the fraction of separation.
>>8172966
Extraction of volatile compounds (like limonene) from fruits
Extraction and identification of lipids, using TLC
Synthesis of aspirin
Coating metal with gold/silver/copper through electrolysis
Extraction of DNA/RNA
Reaction kinetics
Don't.
Labs are dangerous and high schoolers are braindead idiots.
Not to mention you won't learn abything useful in the lab if you don't know anyhing.
Dont know why the mods decided to "DELET THIS" thread. I serriously just wanted to know how to cut out this contour.
Someone last thread said
>lofted surface made into solid.
What the hell is he trying to portray?
>>8172794
Learn to screenshot
>>8172818
In the end it doesn't even matterrrrr
Fug me /sci/, I ended up missing a class in the physical science section of my major. I'm not particularly interested in any of these, but I hope you guys can steer me into the most useful/interesting one for a dude who loves comp sci & math.
My options are:
Environmental Science:
Relationship of living organisms to the environment, including human impact on the atmosphere, hydrosphere, lithosphere and biosphere. Emphasis is placed on understanding of biological and physical science issues currently faced by society.
GEOGRAPHY:
Introduction...
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> click /sci/
> teleport to /a/
how did this happen...
>>8172408
I guess a lot of people on here like anime girls.
[spoiler]I can be your anime girl 2night[/spoiler]
>>8172400
geography. it is the easiest subject from the three choices. don't bother with side classes (or how do you call that? minor?), pick the easiest subjects there desu~
>been contemplating the idea of free will for weeks
>think I may have finally found something which will get me motivated
>studying science will the the key to freeing me from mediocrity and the mundane
>realize I know jack shit about science and it's probably a waste of effort
>dreams once again reduced to nothing
>>8172384
spoiler: free will doesn't exist
Shut up.
>>8172391
Yeah I know, I think that we're all basically biological computers.
Hello guys.
Does anybody knows some online IQ tests which are relevant and closest to those which MENSA use. I want to try some of them before actual application. Thx
reroll
anyone
also roll
Ok, I have tried to understand cell complexes from Hatcher's book.
I have no problem to understand how this torus is made as quotient space, but...
he says to imagine interior of polygon on the picture as open disk ( I assume in R^2) which is attached to union of two circles ( with one point in common? ).
So, is basically 1-cell a line, 2-cell a disk in R^2 and n-cell open disk in R^n?
Do I simply take wedge of two circles and put disk around them, put it in oven and it suddenly gains height?
>>8172148
The beauty of CW complexes is in the attaching maps. So, you look at how the boundary of the disk (so, a 1-sphere) is attached to the wedge of circles. What map S^1 —> (S^1 V S^1) produces a torus when you fill in the boundary you just mapped onto the 1-skeleton?
Hatcher is a shit tier book.
>>8172179
so there is a single point on the boundary of disk which is common point for two circles? Feels like I need to turn disk inside out.
What's the likelihood of the new mini ice age people are talking about?
I mean, we were worried about the exact opposite five years ago, so forgive me if I take climate science with an ocean of salt.
>>8172130
It's a cycle of media propaganda.
They said the same thing in the 70s starting with warming and concluding cooling. Neither happened
>>8172130
climate science isn't a science.
>>8172135
Could you be slightly more informative than a fortune cookie, pls?
How do you deal with people who use magical thinking instead of developing a probably explanation for every single fucking thing they say? How do people like Bill Nye and Sam Harris and Lawrence Krauss and Christopher Hitchens and Morgan Freedman and Carl Sagan and Neil Degrass Tyson and whoever have so much patience for these people? I don't, I just can't fucking stand them and I want to fucking strangle them because they're so annoying, in fact I lament the fact that I live in a society that doesn't base what it thinks on logic and probability, or just...
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Le simple thought is easier
>>8171976
>talks about logic and probability
>P(OP is a brainlet)=1.0
>>8171986
You know what I mean by probability. I'm not a scientist, but you can only give the best possible answer based on what you already know, and you accept that it may not be true if you don't have enough evidence to confirm it. Although when there's a blind spot in a lot of people's understandings, they just fill in the blanks with some other explanation, like consciousness for example. They like to say that consciousness exists outside of this world. WHAT!?!?? NO!!! That's the most retarded thing...
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Is Newtonian physics a meme?
>>8171866
Do you know what a meme is?
In the two-slit experiment, one particle is said to pass through both slots, to form the interference pattern. But each particle leaves a point-like mark on the screen, doesn't it? And the interference pattern is formed with time. Wouldn't it be more logical to suggest, that the interference pattern is formed due to some wave-like properties of time? So each particle passes through one slot, but we do not know which one.
>>8171733
>So each particle passes through one slot, but we do not know which one.
that's exactly what happens.
I don't know why you thought otherwise in the first place.
One photon doesn't create an interference pattern.
10 photons don't create an interference pattern.
you need a lot more.
But the probability of each single photon of being at a certain position on the screen follows the pattern.
> falling for the double slut meme
> current year
I mean COME ON !
>>8171742
>that's exactly what happens.
Not really. Take a look at the path integral formulation of quantum mechanics and see what Feynman and HIbbs says on the double slit experiment.
Are there any major results provable with the Axiom of Choice that aren't provable with the Axiom of Countable Choice?
>>8171727
bamp for interest
Ramsey theory
https://en.wikipedia.org/wiki/Axiom_of_countable_choice
Is economics even a science? Are they lesser creatures compared to us physics and engineering majors?
>>8171625
As someone who majored in math and Econ, at best it's soft science, at worst its sociology. It's not a science in the same way that chemistry and bio are, but that doesn't mean it's not fairly rigorous and useful (given its assumptions). Higher level Econ is also intellectually stimulating, which is what drives people away from that. It's a shame, really. I think I saw here on /sci/ or somewhere that someone was asked, "if you're so smart why are you in Econ? Why didn't you do...
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>>8171625
>Is economics even a science?
>compared to us engineering majors?
>>8171625
No, they choose a model based on previously held ideology, and then accept anything that model seems to say to them.
Is it possible that paranormal phenomena have a scientific basis, but we just don't have the adequate technology to detect/measure it yet?
I'd ask /x/ but those people will believe anything.
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>/x/
>>8171475
Yes. Carbon monoxide and EM fields have long been suspected as the cause behind "haunted houses". All the pictures are fake including this one.
>>8171475
>I'd ask /x/ but those people will believe anything.
Don't act like you're above them, you're just as stupid as they are
Is formal science education worthless?
I have a master's in physics, and now nearly 3 years on from graduating feel no more well informed than when I started uni. Was just taught to pass exams, and that knowledge has vanished once I left academia and went into work.
I mean it got me a job, but I don't feel like I really learned anything.
>>8171452
What is your job?
>>8171465
Work in financial markets for one of the big banks. Mostly FX, some IRM stuff.
>>8171467
And you're surprised that you forgot how to do physics?
What's a quark made of?
>>8171440
Quark-quarks, of course.
Memes
Packets of energy
