Archived threads in /sci/ - Science & Math - 408. page
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What do you guys think of the Primer Fields theory by David LaPoint? If you aren't familiar with it, here's the link
https://youtu.be/9EPlyiW-xGI
I'm not exactly as educated as many of you in this region. Do you think there's any truth to it, or is his research flawed? Discuss
look at what the drop in oil prices has done to the world economy and tell me free energy is still a good idea
>>7803406
It's pure bullshit. No scientific evidence or even theoretical explanation is given for why this magnetic field should replace the one that actually describes how we see magnets work and are described completely by Maxwell's electrodynamics. He just shows a bunch of pretty pictures. Don't come here to post youtube crackpottery without doing some basic wikipedia research.
>>7803412
It turns out that basing your entire economy on oil is retarded.
Is time travel possible?
Sure is, OP - I myself am a time traveler from the year 1967 and let me tell you, things sure have changed a lot since then!
Yea you're doing it right now
>>7803168
yes
citations pls
>epidemiology
>epidemiology
>epidemiology
>science
>epidemiology
>>7802978
>poodle
>poodle
>poodle
>dog
>poodle
>tfw dynamics
>>7802926
Grow up, your still at the easy part.
>>7802926
keep going, work hard my friend, it pays up
>>7802926
>dynamics
fuck me
>make silicon using thermite
>use sulfur and silica
>dump powder into water
>fume hood is on max
>lab still smells like shit
>>7802681
Silicon dioxide + sulphur + the heat of a thousand suns = still doesn't burn
I'm calling hax on your sulphur thermite
>>7802702
forgot to include aluminium
>>7802704
Why did you use any sulphur
How much should I limit my screen time to keep my eyes healthy? Should I eat carrots for healthier eyes, or something else?
Do night themes help my eyes? How important is the fact that my monitor is literally a Dynex TV? Roughly 2 ft by 1ft. I don't have a ruler on hand and it was a gift so I never got the exact measurements.
Just avert your gaze every half hour or so. Try not to sit in the dark
>>7802499
I started using f.lux a while back, don't know if it's really all that effective but I noticed way less blood-shot eyes since I started using it.
>>7802498
Also nearsightedness is negatively correlated to the time spent outside.
So spent some time going outside and looking at far away object to avoid fucking up your eyes. Look out of the window every half hour or so
So ye... I am enthusiastic 11th grade student who wants to learn integrals for personal reasons. What other aspects do I need to know before starting?
>>7802461
Lol, enthusiastic. Well, if you're ahead of your peers then I suppose I understand your current opinion on your status. Anyway, if you know what a derivative is and don't want the theory, then you're fine. If you want the theory, you should probably understand some set theory, a very small bit of topology, and limits.
start here for some background
https://en.wikipedia.org/wiki/Riemann_integral
Read Calculus by Apostol.
You need no previous math knowledge.
I am a mathmatician who has been put in charge of a largeish engineering project despite my complete lack of qualifications. I will take control from the old team leader on Tuesday.
How can I be a good manager and not piss off my engineers?
details to follow
I am incharge of 7 junior engineers who pretty much can only build basic shit, 3 highly competent "old hands" who can do anything, 2 electrical engineers and one aerospace engineer.
We are building a small one-seater car.
This was my organisational plan so far, I figure I will only have to keep in regular contact with the "Heads" of the various project parts, each of whom are very competent. Does it seem ok?
You're not there to micromanage them.
Especially since you admit you are underqualified, you're not really in a position to second guess them and you already understand that they are better engineers than you. That shouldn't stop you from floating ideas out there, but don't be the PHB who suggests things beyond the realm of possibility or deadlines.
You're there to remove any impediments the engineers face when completing the project. You do all the bullshit bureaucratic administrative stuff so the engineers can focus on what matters. Do...
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>>7802111
Right.
How far should I be willing to go vis a vis making people meet boundaries, checking that progress is being made, etc
![logo%20ENS[1].jpg](https://i.imgur.com/38TERUD.jpg "logo%20ENS[1].jpg")
forget putnam exams, let's get some worthy oral exams in here
I will try to post regularily some funny challenges.
If no one has found in less than say 24h, I'll post a solution. Will try to add hints before if necessary.
If you already know the solution, please let the others try before posting.
Show that every matrix [math] M \in \mathcal{M}_2(\mathbb{R}) [/math] can be written as [math] A^2 + B^2[/math], with [math]A,B \in \mathcal{M}_2(\mathbb{R}) [/math]
What is [math] \mathcal{M}_2(\mathbb{R}) [/math]?
Is it the ring of [math]2 \times 2[/math] matrices with real entries or what?
>>7801917
yes
sorry I thought it was like that everywhere.
>>7801905
> pesage de couilles façon normale sup'
FGN ftw
![virus[1].jpg](https://i.imgur.com/pLLJ2SS.jpg "virus[1].jpg")
Something that has always bothered me.
Viruses are considered non living.
Its hard for me to call anything that can replicate non living.
One of the larger arguments I see is that because they can not replicate on their own, that they need another living cell to insert their genetic material into to replicate.
Well there are multiple parasites that can not breed unless they have a host.
So what makes something "living"
>Living things are made of cells.
I've read that they are not an actual cell but just...
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>>7801160
Viruses are not alive because, quite simply, they do not have any metabolism. They are just DNA wrapped up in protein coating. They're closer to machines than living things.
>>7801160
Labels like living and nonliving only exist for humans to easily classify information. Most things when scrutinized have gray areas in their definition or classification. When people describe viruses as nonliving, they are saying that viruses do not have all of the typical requirements of a living creature, not that viruses aren't actually alive. Obviously a virus is not nonliving the same way a rock is nonliving.
>>7801160
>They don't use it on their own, but the host cell needs energy for the virus replication to complete
That's because the virus isn't reproducing. The cell produces the virus. To be classified as 'living', it must be able to reproduce itself, not to simply be produced by external factors.
>They don't use it on their own, but the host cell needs energy for the virus replication to complete
Aside from the last...
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ITT: You rage you loose
Pseudoscience edition.
https://www.youtube.com/watch?v=DaDeiBRifm8
You do know germ theory, plate tectonics, atoms, heliocentrism used to be considered pseudoscience?
>>7801072
I'm not mad... just sad bro
Yea i saw this a couple days ago. It made me feel embarrassed for taking this shit slightly seriously three years ago
Are there guys with a masters degree in physics here? What is your job now and where are you hoping to work in the future?
What are some interesting branches you can work in later except doing research at an uni?
Thanks for answers
>>7800820
>degree in physics
kek
get a real degree
>>7800820
bump
>Mfw the mean IQ of doctors in the U.S. is 114
>Mfw that means there will be a substantial amount of doctors below that, some even in the 100-105 range.
>Mfw our lives are literally in the hands of brainlets
If you're so smart, why don't you cure yourself, huh?
>>7800059
>You have to be smart to be a doctor
When will this meme die? Memorization is easy, even easier when you can just check a database of info.
>>7800065
because you can't write yourself prescriptions if you're not a doctor.
>learn2lobby
Any mentally ill /sci/entists here?
I'm bipolar, and had an almost perfect grade in economics for "original essays", and being "far above my peers' academic level", as my professor put it. He even befriended me with another professor who does original research.
They found talking to me interesting and even added me on Facebook.
Since then, however, I dropped out, and cut off all the previous academic connections. Now, I tend to believe that any academia-related ideas I have are just crazy delusions, and that my aspirations are just...
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No. You need to focus on one single, extremely tough, multifaceted project.
Contact you old prof. Explain just as you have here, ask if there are any top drawer questions that need solving.
Took 12 grad math classes as an undergrad, straight A's, but had to drop out twice due to depression and drug use. Could have been a notable mathematician otherwise.
>>7802669
>I have so many good and revolutionary ideas I tell you!
>B-but I've had no chance to enact of them because of some contrived, obviously made up bullshit reason
Or
>T-they are so revolutionary they are beyond everyone's imaginations! Crazy right!
This is the new 'smart but lazy'.
If you had good ideas, you would be living a good life. Fuck right off to dumbfuck fucking town.
>religion is legal
>we could have advanced ages ago if we allowed human experimentation
>thousands of homeless people
>instead of exchanging food shelter and some money for their contracted service for experimentation we give it to them for free and leave them homeless
>religious fags out there actually get mad when people do stem cell research or experiment on any living thing
>vegetarian/vegan...
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>he thinks it's the religious who oppose human experimentation
it's the medical community shunning it, human experimentation wouldn't give us any meaningful breakthroughs or insight that we haven't already gotten.
>>7799013
>Why are people so fucking stupid
I don't know, why are you?
>>7799018
But how do we know? Who is adamantly doing live experimentation on humans as we speak that isn't illegal?
Sure we have had many breakthroughs, but what if it could speed up progress so that breakthroughs take a shorter amount of time.
We don't know everything about death even, what's stopping us from finding out.
