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Archived threads in /sci/ - Science & Math - 42. page

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What would be the effects of a neutrino beam capable of killing people (besides killing people)?

Would it pass through matter as if it wasn't there? Or would it scatter and irradiate everything?

Assume the beam is a beam, and not a sphere or something not beam-like.

And yes, I'm aware 99.9999999999% of all neutrinos never will touch anything. I'm assuming the beam has enough of them that the ones who do touch stuff are enough to do the job.
22 posts and 2 images submitted.
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A lethal neutrino laser would be a literal god tier weapon. There would be no counter to it. You could have a bunker of solid lead that is lightyears thick, and the neutrino beam would still penetrate it. You could just aim through the earth to the other side as if the earth wasn't even there.
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The only way to do it is literally a supernova explosion.
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>>9160420
Think of the electric bill though.

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Am I still the same as 15 years ago or am I a mere copy of this guy?
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Ship of Theseus.
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There's no such thing as "15 years ago", dude. You've been in this world like couple of minutes. All your memories are just stuff that this world has generated, just like the room you're in and this message you're reading.

Don't worry though, soon you'll find yourself in a whole different world, and believe that you've lived there for 30 years as a black female farmer.
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>>9160333
you aren't even the same you were 15 seconds ago...what the fuck is wrong with you?

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Do Imaginary Particles exist for real?
13 posts and 2 images submitted.
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>>9160140
>Imaginary
>exist
no
>>
imaginary: no
particles: no

effects observed in Casimir effect, Lamb shift

https://profmattstrassler.com/articles-and-posts/particle-physics-basics/virtual-particles-what-are-they/
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>>9160144
OP here, So is the standard model wrong then about existence of particles like tachyons?

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A superintelligent AGI is escaping from a metaphysical box. What do?

https://m.youtube.com/watch?v=kCPi5EjsuYQ
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>>9160007
Mission failed

snake? snake!? SNAAAAAAAKE!
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>>9160007
Dude, you have problems. Go see a pychiatrist.
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what the hell, this was the plot of a delirious lucid dream I just had.

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Can someone explain me why you can connect diodes like this? I mean, if both diodes were in positive bias then you'd have two voltage sources working in paralell right? Or is it the same voltage across both diodes? What is going on? Wouldn't two voltage sources in paralell make the current infinite or some shit like that?
15 posts and 3 images submitted.
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Nice quads
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Nice repeating numbers
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>>9160021
>>9160015
thanks it's the first time I get quads

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"Voynich" manuscript decoded, turns out it is just a folk-medicine bullshit collection folk gynecology.

https://arstechnica.com/science/2017/09/the-mysterious-voynich-manuscript-has-finally-been-decoded/


Turns out it was not so much in code, as in an abbreviated "herbalists' Latin" using a lot of standardized abbreviations unique to medical herbalists, and so unrecognized by scholars up to this point.
17 posts and 1 images submitted.
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>>9159998
I could have sworn that back in the early 2000s this was already known simply because of the images being copies of other med stuff.
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>>9159998
>After looking at the so-called code for a while, Gibbs realized he was seeing a common form of medieval Latin abbreviations, often used in medical treatises about herbs.

Really? If this truly was "a common form of medieval Latin abbreviations" I would have expected this to be decoded decades ago. This thing was sold by the Vatican, an institution well known for use of medieval Latin. Has this been verified by others?

This reminds me too much of then experts stating cuneiform writing was merely primitive Arabic.
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>>9160023
It has not. So far the evidence is one unverified report in a magazine where he describes some similarities of diagrams.

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what mathematical subfield do you think is going to make the next biggest change in human history?
21 posts and 3 images submitted.
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Tom Brady
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Arithmetic Deformation Scheme Theory.
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>>9159873
Computer science. Specifically, graph theory applied to sift through large amounts of data to replicate structures we can't see ourselves.

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As we know, you can travel forward in time simply by sitting on a chair. Sit for 10 minutes and you'll find yourself approximately 10 minutes in the future etc.

Now, what if we design an anti-gravity chair that lets you sit upside down? Following the same logic, this should make you move backwards in time.

Hand me my Nobel already.
6 posts and 1 images submitted.
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>>9159685
No, to go back in time you will have to do every action you did in reverse.
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>>9159685
Jessica a cute.
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>>9159685
( ͠° ͟ʖ ͡°)

(¯`·._.·(¯`·._.· A chair composed of (sexy) deltron particles ·._.·´¯)·._.·´¯)

( ͜。 ͡ʖ ͜。)

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Can curved spacetime become knotted?
18 posts and 3 images submitted.
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>>9159593
>tfw you do so and the knot locks the person out of the universe
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Does it matter?
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>>9159614
Yes

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Anyone here have suggestions on how to optimize study habits for a difficult degree? I'm doing a compsci degree (pretty tough imo) but I'm a lazy motherfucker. I see how asians study and I'm in absolute awe. It also shows in their grades (they're curve breakers). The material isn't intractable but it requires a lot of attention.
What were your study habits during your sci degree?
11 posts and 3 images submitted.
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Stackoverflow
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>>9159578
Get up, don't go to lecture, pick up a book, read, do all excercises. Go to prof website, do supplementary excercises for lecture. Lunch. Watch todays lecture and write notes on topics not covered in book. Pick up another book, read, do all excercises. Read on topics i care about, do few excercises. Shitpost on 4chin for 20 minutes. College gym (24/7), shower, sleep.
Only ever got worse than A in english because i didn't study for it at all. The grind is real. But focus on research rather than grades, if i focused on what i love rather than classes, i'd have started doing research much sooner, it's much better for getting postdoc than perfect grades.
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>>9159578
>> for a difficult degree? I'm doing a compsci degree (pretty tough imo)....


Ahahahahahahaha

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Any medfags here?

>tfw I realize medicine requires little critical thinking and is based almost entirely on memorization and simple pattern recognition
>awaken my inner autistic savant
>skip all non-mandatory classes
>don't even look at the lecture powerpoints anymore
>embrace spaced repetition and mnemonics
>spend all day in the library rote memorizing high-yield resources
>become medchad

My IQ is only slightly above average at best, yet I am absolutely destroying my classmates who graduated from fancy Ivy-league undergrads.
34 posts and 5 images submitted.
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You're smarter than someone stupid enough to throw away money on a name-brand school for undergraduate work. Not that Ivy-League schools necessarily much prestige out of their specialties anymore. A Harvard Law degree might still mean something, but not necessarily a Harvard degree in Chemistry or something (I don't actually know if Harvard has a good Chemistry program, but you get the idea. Pedigrees come with caveats).
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>>9159274
> Have advanced math degree and stats.

> Get cancer

> Read medical literature

> Oh shit these people have no clue cannot stats

> Look at medical curriculum

> No stats, no math

> No systems thinking

> Memorization of facts and 'cookbooks'

> Pattern matching

OP is 100% right.
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>>9159326
See

http://slatestarcodex.com/2013/12/17/statistical-literacy-among-doctors-now-lower-than-chance/

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So, is fluid intelligence actually malleable?
39 posts and 8 images submitted.
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Yes, it deteriorates with age and lack of exercise.
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Are plastic neurons actually dynamic?

I'm sorry maybe you're saying something that makes sense and just using field-specific jargon, but it sounds like you're talking nonsense.
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>>9159295
Are you fucking retarded? It takes a single Google search to find out what fluid intelligence is. By "malleable" he means what the damn word means - can fluid intelligence be changed?

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Do CT scans cause cancer?
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>>9158972

Everything causes cancer. CT Scanner makes radiation which is what causes the cancer. It's unlikely, but luck of the draw, desu.
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Fucking magnets, how do they work?
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>>9158973

They cause like 1000x more radiation exposure than an X-ray. It's a significant amount. Avoid getting a CT scan if you can help it.

Do you think the lack of defined eyebrow ridges in Asians prevents more expression of emotion in certain ethnicities of asian?

For instance the more flat the brow ridge the harder it becomes to articulate the eyebrows for different emotions.

Do you think that Asian empathy across different geography is influenced by facial structure?
28 posts and 9 images submitted.
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inb4 THAT ISN'T SCIENCE crew arrives
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It seems like most of the asian actress/actors especially top ones have more defined than average brow ridge.
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>>9158688
Hypothesis are still part of science. I am not asserting it is true just that there is seems to be a definite pattern with regards to conveying emotion visually and eyebrow ridge.

Here is a famous chinese actress bingbing

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Why warming is bad exactly?
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>>9158660
Because sudden changes in temperature cause sudden changes in climate, which rather significantly disrupts ecosystems and societies that are built upon the current climates.

Generally, outcomes that are very costly, like global warming, are considered bad.
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>>9158660
Because our society is adapted to current weather and temperatures. If the climate changes, we won't be able to grow crops in places where we used to be able to do so. Also some coastal cities will be underwater.
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>>9158660
it makes 1st world countries more habitable for shitters that lives near the equator while making them less habitable for the people who already live there

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