Archived threads in /sci/ - Science & Math - 918. page

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Serious question, guys. Would this Y-32 Xi'an (from the game Arma 3 Apex) work in real life? I mean, it's a bit complicated for a VTOL/Plane with such a wingspan.

https://www.youtube.com/watch?v=rnnW8KF5C8o

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https://www.youtube.com/watch?v=XF7DPveRuGY

https://www.youtube.com/watch?v=4faZx2TWsL4

https://www.youtube.com/watch?v=_308KNAuFkg

The four year old girls didn't had much time to train given their age.

Yet they are surprisingly good to say at least.

Is there a way to go again in that state of mind when you are a child?

I've already read about the critical period, drugs, meditation, etc...

https://en.wikipedia.org/wiki/Dhy%C4%81na_in_Buddhism

https://en.wikipedia.org/wiki/Critical_period

Kids have an opportunity window in which they can learn absolute pitch.

After that window it becomes substantially impossible to develop the skill.

I wonder what kind of wiring we missed not doing mathematics at young age.

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Hi. I made my first YT video on this topic. I'd appreciate any feedback :)
https://youtu.be/kMjatLsmO6E

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Is actuarial Science a meme? Passed my first two exams pretty easily as an applied math major...

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In a previous thread of mine I had shared my thought on how before the big bang occurred out Mr universe may have been zero dimensional having no size and it suddenly crated 3 new spacial dimensions this allowing 2 dimensional meter to exist. But I hear fewer and fewer people who know little to nothing about the spacial dimensions beyond our own 3 dimensional view. If you don't know 4 spacial dimensions creates duration, where every point of the past can be viewed almost as if the universe is recording everything. And 5 dimensional space is probablity, every time where every outcome is possible and can be viewed by a anyone, that is saying there are 5th dimensional creatures that is. This leads to probability, I believe our universe is SUB 5th dimensional meaning we are a 3 dimensional outcome of a probability, and there are infinite number of probabilities for every action, and thus there are more universes. When one door close an infinite of doors will open, each universe is on its own path. Some may be exactly the same as ours until a split in the path is revealed and we no longer have the same outcome, but there will be infinite more that are still walking the same path as us. And there are infinite people who are writing this thread, some will make typos that others wont, some will not even be here. And infinite have died, by any means even suicide. You can say our lives are next to nothing in an unimaginable sea of infinity where all we are is a possiblity, a probablity.

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do you think intersectionality belongs in a science march?

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Would it be effective (not to imply efficient) to decontaminate water by electrolyzing it into hydrogen + oxygen, then burning both gases back into water? What effect would this have on sodium fluoride present in the water, either during the electrolysis or in combustion?

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Climatologist is a term constantly used by the media, and scientific articles. Can you get a degree in Climatology? I've been looking everywhere and can't find anyone who holds a Phd. in Climatology, or any degree for that matter? I can find when the first degree in Biology or Chemistry was awarded, but Climatology...nope.
Please help me out if you know who the first person to hold a Climatology degree was, and when it happened. Also any universities offering a degree in Climatology.
Thank you for your time /sci/.

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>3.1415926535897932384626433832795028841971693993751058209749445923078164062862089986280348253421170679821480865132823066470938446095505822317253594081284811174502841027019385211055596446229489549303819644288109756659334461284756482337867831652712019091456485669234603486104543266482133936072602491412737245870066063155881748815209209628292540917153643678925903600113305305488204665213841469519415116094330572703657595919530921861173819326117931051185480744623799627495673518857527248912279381830119491298336733624406566430860213949463952247371907021798609437027705392171762931767523846748184676694051320005681271452635608277857713427577896091736371787214684409012249534301465495853710507922796892589235420199561121290219608640344181598136297747713099605187072113499999983729780499510597317328160963185950244594553469083026425223082533446850352619311881710100031378387528865875332083814206171776691473035982534904287554687311595628638823537875937519577818577805321712268066130019278766111959092164201989380952572010654858632788659361533818279682303019520353018529689957736225994138912497217752834791315155748572424541506959508295331168617278558890750983817546374649393192550604009277016711390098488240128583616035637076601047101819429555961989467678374494482553797747268471040475346462080466842590694912933136770289891521047521620569660240580381501935112533824300355876402474964732639141992726042699227967823547816360093417216412199245863150302861829745557067498385054945885869269956909272107975093029553211653449872027559602364806654991198818347977535663698074265425278625518184175746728909777727938000816470600161452491921732172147723501414419735685481613611573525521334757418494684385233239073941433345477624168625189835694855620992192221842725502542568876717904946016534668049886272327917860857843...

>is less than 4

>a number with infinite quantity is less than 4

fucking how?

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>start MS in statistics because it leads to a huge variety good paying jobs
>It's way less interesting than math
Did I goof?

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(1/2)

Hi /sci/, how are you guys?

First of all:

1-apologies for my bad English – it is not my first language.

2-apologies for the personal-blog post species.

>3-tl;dr: best way of learning math by yourself, for example: best order of areas and subjects to follow, best book to read, best websites to visit, etc.

So, I started to learn mathematics by my own recently. When I was at school I was terrible at it because of several reasons, like:

>a) Math scared the hell out of me.

>b) My father was extremely demanding and severe and somehow crippled me with fear and anxiety toward things I did not had natural aptitude (it was even worse with math, since it was a domain that he himself understood quite well).

>c) I couldn’t find math interesting because I wasn’t able not create anything with it, just solve exercises that all the other students were also solving (so I spend the classes reading, writing poetry and drawing). Of course, I knew that mathematicians - like artists - also create, but getting at such a high level is something I never felt capable of achieving.

>d) I hated being tested and was smashed by the pressure (in the exam-weeks I remembered that I was always affected by diarrhea: one of the reflexes of my nervousness).

>e) When I was interested in certain subjects I could not stop reading about it to focus on other, more practical or useful matters. For example: when I was reading the Greek plays and books about the Greek civilization I could not find within me the strength to put those material down and pick up the math books.

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Explain Hawking Radiation to me please

1) As far as I understand, the radiation is caused by particles with negative mass falling into the event horizon while the particles with positive mass escape. Shouldn't particles with negative mass escape just as often as positivie particles, thus cancelling out the effect?

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How many people frequent /sci/?

Am I just having arguments with the same handful of people?

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I am sophomore in pure mathematics and at my university they are teaching kids who will participate in the local olympiad. One day I saw this question written in one of the classrooms:

Let [math] \square ABCD[/math] be a quadrilateral. Let [math] E [/math] be the midpoint of [math] \overline{\rm BC} [/math] and [math] F [/math] be the midpoint of [math] \overline{\rm DC} [/math]. If the lines connecting [math]A[/math] and these midpoints trisect the diagonal [math] \overline{\rm DB} [/math] then prove the quadrilateral is a parallelogram.

I wrote it down thinking it was a trivial kids problem and then started trying it to prove it by the usual tricks. Construct some parallel lines. some similar triangles and boom. But no. I HAVE BEEN DOING THIS FOR DAYS. Until now. This is my proof:

Consider the arbitrary points [math]B,C,D[/math] in space such that they make a triangle. Let the midpoint of [math] \overline{\rm BC} [/math] be [math] E [/math] and the midpoint of [math] \overline{\rm CD} [/math] be [math] F [/math]

By construction there exists a point A such that [math] \square ABCD[/math] is parallelogram and if it is a parallelogram then it can be proven that the lines [math] \overline{AE} [/math] and [math] \overline{AF} [/math] trisect the line [math] \overline{BD} [/math]

(this fact can be proven almost directly).

Lets also name [math]X[/math] as the point where [math] \overline{AE} [/math] intersects [math]\overline{BD}[/math] and [math]Y[/math] as the point where [math] \overline{AF} [/math] intersects [math]\overline{BD}[/math]

As [math]B,C,D[/math] are arbitrary, the original statement is equivalent to saying:
The only point [math]A[/math] such that [math]\overline{AE}[/math] and [math]\overline{AF}[/math] trisect the diagonal is the point [math]A[/math] such that the quadrilateral is a parallelogram.

(cont)
Fuckng word limit.

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>tfw too strong to do mental math
If I don't have a calculator with me, I'm a literal cripple in my classes. How do you deal with this, /sci/?