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Threads by latest replies - Page 4

(38 replies)

In Group Variation and Humans

No.11336206 ViewReplyOriginalReport
Why do we have so much more of it than other species? Height, facial features, neurochemistry, etc., all vary widely between even closely related individuals. I can't think of any other creature with such diverse genotypes. Can you?
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(189 replies)

/sqt/ /qtddtot/ - stupid question thread

No.11329155 ViewReplyLast 50OriginalReport
The newest iteration of >>11314509

>what is /sqt/ for
Questions relating to math and science, plus appropriate advice requests.
>where do I go for other SFW questions and requests?
>>>/wsr/ , >>>/g/sqt , >>>/diy/sqt , >>>/adv/ , etc.
>pdfs?
libgen.is (Warn me if the link breaks.)
>book recs?
https://sites.google.com/site/scienceandmathguide/
https://4chan-science.fandom.com/wiki//sci/_Wiki
>how do I post math symbols?
https://i.imgur.com/vPAp2YD.png
>a google search didn't return anything, is there anything else I should try before asking the question here?
https://scholar.google.com/
>where do I look up if the question has already been asked here?
https://warosu.org/sci/
https://boards.fireden.net/sci/
>how do I optimize an image losslessly?
https://trimage.org/
https://pnggauntlet.com/

Question asking tips and tricks:
>attach an image
>look up the Tex guide beforehand
>if you've made a mistake that doesn't actually affect the question, don't reply to yourself correcting it. Anons looking for people to help usually assume that questions with replies have already been answered, more so if it has two or three replies
>ask anonymously
>check the Latex with the Tex button on the posting box
>if someone replies to your question with a shitpost, ignore it

Resources:
Good charts: https://mega.nz/#F!40U0zAja!cmRxsIoiLFZ_Mvu2QCWaZg
Shitty charts: https://mega.nz/#F!NoEHnIyT!rE8nWyhqGGO7cSOdad6fRQ (Post any that I've missed.)
Verbitsky: https://mega.nz/#F!80cWBKxC!ml8ll_vD2Gbw4I1hSLylCw
Graphing: https://www.desmos.com/
Calc problems: https://www.wolframalpha.com/
184 posts and 41 images omitted
(25 replies)

Corona virus is for /pol/ not /sci/

No.11338765 ViewReplyOriginalReport
Everyone who wants to discuss pop science flavor of the month should go back to /pol/. This virus is harmless with a less than 3% kill rate. 2.89% to be exact.
The way everyone is hyping it up proves that its just /pol/tard nonsense.
Even if it was serious, it's just going to kill some chinese boomers thus saving them money on pensions.
Go back to /pol/ virusfags
20 posts and 5 images omitted
(5 replies)
No.11337482 ViewReplyOriginalReport
>recieved a digital textbook for college pre-calc
>homework is practice questions from the textbook
>textbook has an answer appendix, giving answers to said practice questions
>basically cheating but I still have to show my work
They're giving degrees away!
(25 replies)
No.11339140 ViewReplyOriginalReport
Every person infected with coronavirus won't have kids in the future. Virus was genetically engineered to have that effect. The rest of the symptoms are just coverup. It's designed to infect about 72% of the world's population (there are some markers in the blood that prevent people from getting it but i had no time to read more about it. About 28% of the people have them and they are safe).

Whole purpose of this farce is to reduce the population heavily and thus solving a lot of problems we face now. Really don't ask me how i know this because i won't tell you. You can find more info with legit proofs on darknet.
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(66 replies)
No.11335178 ViewReplyLast 50OriginalReport
>Shrodinger's cat
>Superposition
>Quantum mechanics
Why is popsci so obsessed with these topics?
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(5 replies)

How many pounds of thrust would nuclear propulsion create?

No.11339322 ViewReplyOriginalReport
(9 replies)
No.11334606 ViewReplyOriginalReport
Do cats/T.Gondii cause mental illness or decrease IQ?
4 posts omitted
(11 replies)
No.11337689 ViewReplyOriginalReport
If I have a random number generator which generates numbers between 1 and 100, how likely is it percentage-wise that it generates 4 90-99 numbers in a row in 100k rolls?
6 posts omitted
(46 replies)

The venturi effect in bullets

No.11335753 ViewReplyOriginalReport
Can /sci/ apply its knowledge of fluid dynamics to the design of bullet caliber? I think theres some things that could be done by people who know what they are doing in this field, most cartridge designs are well over half a century old at this point.


Weatherby one example of a company that uses modern understanding of fluid dynamics for cartridge design, as far as i can tell it is the only company that uses the venturi effect in order to achieve higher velocity from their bullets, see the weatherby design on the right compared to traditional bullets.

A round with a weatherby double shoulder gains 100 feet per second or more of muzzle velocity compared to a standard bullet. How would /sci/entests design the shoulder of a bottle necked rifle or pistol bullet casing in order to maximize ballistic performance?
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