Archived threads in /sci/ - Science & Math - 1344. page

How cold would it have to be for your pee to freeze mid stream before it hit the ground?

I doubt it would be possible on earth without a manmade area, but who knows.

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Anonymous 2016-10-01 16:50:44 Post No.8384214
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Anonymous 2016-10-01 16:50:44 Post No.8384214 [Report]

>>8384203
cold enough for it to be immensely unhealthy, and likely frostbite inducing on your phallus upon contact with air temperature

Anonymous 2016-10-01 16:54:18 Post No.8384222
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Anonymous 2016-10-01 16:54:18 Post No.8384222 [Report]

>>8384214
What if I designed some kind of insulated cock casing that only exposed the urethra and was able to reseal afterwards?

Anonymous 2016-10-01 16:58:23 Post No.8384234
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Anonymous 2016-10-01 16:58:23 Post No.8384234 [Report]

>>8384222
but why

Anonymous
2016-10-01 16:11:06 Post No.8384161
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Anonymous 2016-10-01 16:11:06 Post No. 8384161 [Report] [View this topic]

>undergraduates complaining that the course i'm TAing is hard.

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Anonymous 2016-10-01 16:12:10 Post No.8384164
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Anonymous 2016-10-01 16:12:10 Post No.8384164 [Report]

what are you TAing?

Anonymous 2016-10-01 16:16:06 Post No.8384168
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Anonymous 2016-10-01 16:16:06 Post No.8384168 [Report]

>>8384164
>Calc 3

Anonymous 2016-10-01 16:29:46 Post No.8384191
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Anonymous 2016-10-01 16:29:46 Post No.8384191 [Report]

>>8384168
>tfw Calc 2 was supposed to be the weed-out course
>tfw I'm in Calc 3 and somehow still surrounded by retards

Kill me.

Anonymous
2016-10-01 14:38:33 Post No.8384039
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Anonymous 2016-10-01 14:38:33 Post No. 8384039 [Report] [View this topic]

Antibiotic resistance can be transferred through horizontal transfer and plasmid conjugation, but can it also be transferred through viruses? I can't find any reliable free researches explaining this.

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Anonymous 2016-10-01 14:54:23 Post No.8384060
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Anonymous 2016-10-01 14:54:23 Post No.8384060 [Report]

>>8384039
It's definitely possible, the term you're looking for is "transduction".

https://en.wikipedia.org/wiki/Transduction_(genetics)

Look for "transduction of antibiotic resistance" or something similar. Afaik it happens, it's just that it's difficult to prove that conferred antibiotic resistance comes from bacteriophages. Transduction of antibiotic resistance is also assumed to be a small source of this acquired resistance compared to other sources, to the best of my knowledge. Look it up if you're interested and report back.

Anonymous 2016-10-01 15:01:36 Post No.8384067
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Anonymous 2016-10-01 15:01:36 Post No.8384067 [Report]

>>8384060
>bacteria and viruses literally conspire against us
god damn it, nature

Anonymous 2016-10-01 16:24:03 Post No.8384177
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Anonymous 2016-10-01 16:24:03 Post No.8384177 [Report]

of course. any means of genetic transfer can result in antibiotic resistance, provided the gene that is transfered codes for resistance to the certain antibiotic

Anonymous
2016-10-01 14:06:57 Post No.8384005
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Anonymous 2016-10-01 14:06:57 Post No. 8384005 [Report] [View this topic]

>the apple dropped on his head and he invented gravity
>invented

Stopped watching right there. Why are academic movies always so shit /sci/?

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Anonymous 2016-10-01 14:17:53 Post No.8384017
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Anonymous 2016-10-01 14:17:53 Post No.8384017 [Report]

>>8384005
He invented the specific concept of Newtonian gravity. Obviously gravity had already been "discovered" as people knew things fell down.

Anonymous 2016-10-01 14:22:51 Post No.8384025
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Anonymous 2016-10-01 14:22:51 Post No.8384025 [Report]

>>8384017
Oh oh, here we fucking go again.

The abstraction of Newton's laws is still a discovery you filthy...non-Platonist.

Anonymous 2016-10-01 14:32:08 Post No.8384030
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Anonymous 2016-10-01 14:32:08 Post No.8384030 [Report]

>>8384025
It's both and neither you autist. Therefore your shitty blog post is meaningless.

Anonymous
2016-10-01 14:05:02 Post No.8384000
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Anonymous 2016-10-01 14:05:02 Post No. 8384000 [Report] [View this topic]

This is the smartest person to ever have lived.

Prove me wrong.

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Anonymous 2016-10-01 14:21:46 Post No.8384022
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Anonymous 2016-10-01 14:21:46 Post No.8384022 [Report]

>>8384000
I'm the smartest person to ever live, therefore your claim must be false.

Prove me wrong.

Anonymous 2016-10-02 08:30:26 Post No.8385735
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Anonymous 2016-10-02 08:30:26 Post No.8385735 [Report]

>>8384022
One must provide proof to disprove another's claim, therefore your claim can be considered invalid.

Prove me wrong.

Anonymous 2016-10-02 08:37:44 Post No.8385745
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Anonymous 2016-10-02 08:37:44 Post No.8385745 [Report]

>>8384000
>>8384022
>>8385735

You're all shifting the burden of proof - that's fallacious.

Prove me wrong.

Anonymous
You know why computer science is so called? 2016-10-01 13:39:50 Post No.8383972
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You know why computer science is so called? Anonymous 2016-10-01 13:39:50 Post No. 8383972 [Report] [View this topic]

Because it does as much science as computers.

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Anonymous 2016-10-01 14:41:05 Post No.8384045
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Anonymous 2016-10-01 14:41:05 Post No.8384045 [Report]

/r computer "science" gif

Anonymous 2016-10-01 18:12:23 Post No.8384361
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Anonymous 2016-10-01 18:12:23 Post No.8384361 [Report]

>>8384045
>>>/r.

Anonymous 2016-10-01 18:18:06 Post No.8384375
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Anonymous 2016-10-01 18:18:06 Post No.8384375 [Report]

>>8383972
Probably the same reason it's called 1 kilobyte, when it's not even 1000 bytes.

Anonymous
2016-10-01 13:35:09 Post No.8383965
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Anonymous 2016-10-01 13:35:09 Post No. 8383965 [Report] [View this topic]

Would anyone be interested in me making short math 'lessons' on /sci/?

I remember OHP making a series of threads on categories and Brave New Algebra. (https://warosu.org/sci/thread/S8182284)
Unfortunately it stopped midway, but it inspired me to do something similar.
I would prefer focusing on elementary subjects, otherwise I'll have a lot of mistakes. Plus, I think covering the basics will be helpful to more people on the board.

I was thinking of either logic+set theory, introduction to number theory or some type of calculus/real analysis. I'll probably do set theory, unless anyone has a specific request.

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Anonymous 2016-10-01 15:08:48 Post No.8384074
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Anonymous 2016-10-01 15:08:48 Post No.8384074 [Report]

sass, is that you?

Anonymous 2016-10-01 15:10:25 Post No.8384077
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Anonymous 2016-10-01 15:10:25 Post No.8384077 [Report]

Go for it, OP. It'd be nice to see a decent thread on here that's actually about math/sci

Anonymous 2016-10-01 15:15:09 Post No.8384080
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Anonymous 2016-10-01 15:15:09 Post No.8384080 [Report]

>>8383965
Number Theory doesn't really make sense to me, although I've been following this playlist by a HS teacher for now and it's okay-tier.

https://www.youtube.com/playlist?list=PLr3WmPgPWZfX1HUpeyKkP6ir2wOFhqXMO

Anonymous
How to get my head around combinatorics? 2016-10-01 12:49:36 Post No.8383914
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How to get my head around combinatorics? Anonymous 2016-10-01 12:49:36 Post No. 8383914 [Report] [View this topic]

I just get confused so easily, lets say I have 8 muffins each of different flavor:

How many ways are there to select 16 muffins? I originally thought 8^16 but assume that we dont care about ordering it should be much much lower than this.

According to my textbook its just "n+k-1 choose k-1" where n = # objects and k = #types which gives us 23c7 = 245157

This doesnt make any sense to me.

If the question were "how many ways can we select 2 muffins" then obviously its 8c2 if we don't allow repetition, and 8c2 + 2*8 if we do allow repetition.

But when r > n in the case of the above, choosing 16 muffins from 8 types I dont know what to do because the question evaluates to 8c16 which is 0, so I have to mindlessly follow the formula which is stupid if I don't even understand it at an intuitive sense.

The book tries to explain it by modeling it into some retarded dogshit using "strings of 1's and 0's" or some retardation because they can't even explain it coherently themselves.

Can anyone explain to me how to pick 16 muffins from 8 different types in an understandable way?

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Anonymous 2016-10-01 12:52:14 Post No.8383916
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Anonymous 2016-10-01 12:52:14 Post No.8383916 [Report]

>and 8c2 + 2*8 if we do allow repetition.

I meant 8c2 + 8

Anonymous 2016-10-01 13:27:51 Post No.8383959
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Anonymous 2016-10-01 13:27:51 Post No.8383959 [Report]

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bump

Anonymous 2016-10-01 13:47:16 Post No.8383987
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Anonymous 2016-10-01 13:47:16 Post No.8383987 [Report]

>>8383914
gonna try to help.
you want to choose 16 muffins. see those 16 as a vector, a list, whatever you wish.

(a) If you care about the order :
muffin 1 : you have 8 possibilities.
muffin 2 : same.
...
muffin 16 : same.
total of possibilities : 8^16

(b) If you don't care about the order :
Let's take an example list. Let's say muffin 1 is 1, etc.
[1,2,1,4,2,3,4,8,8,1,3,3,2,7,6,6]
Saying that you don't care about the order is saying that the above list is the exact same as this one :
[1,1,1,2,2,2,3,3,3,4,4,6,6,7,8,8]
or any other one that have 3 1s, 3 2s, 3 3s, ...

So your list is fully represented by the numbers of 1s, 2s, ... up to 8s. You now have to count the number of lists of 8 integers ranging from 0 to 16 so that the sum of those integers is 16.

Anonymous
Has anyone a funny / interesting / pedagogical proof or illustration of Pythagora's theorem? 2016-10-01 11:08:53 Post No.8383830
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Has anyone a funny / interesting / pedagogical proof or illustration of Pythagora's theorem? Anonymous 2016-10-01 11:08:53 Post No. 8383830 [Report] [View this topic]

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Anonymous 2016-10-01 11:29:05 Post No.8383847
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Anonymous 2016-10-01 11:29:05 Post No.8383847 [Report]

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only one I ever understood

Anonymous 2016-10-01 11:30:54 Post No.8383850
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i would tell you but i'd have to throw you off this boat afterwards

Anonymous 2016-10-01 11:54:43 Post No.8383869
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Anonymous 2016-10-01 11:54:43 Post No.8383869 [Report]

>>8383830

Not a proof but i want to be math

3^2 + 4^2 = 5^2

#euler

Anonymous
2016-10-01 10:15:00 Post No.8383771
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Anonymous 2016-10-01 10:15:00 Post No. 8383771 [Report] [View this topic]

what's going to happen when computers become better at programming than programmers are?

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Anonymous 2016-10-01 10:19:43 Post No.8383776
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Anonymous 2016-10-01 10:19:43 Post No.8383776 [Report]

>>8383771
intelligence explosion into technological singularity into extinction of mankind

Anonymous 2016-10-01 19:40:09 Post No.8384562
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Anonymous 2016-10-01 19:40:09 Post No.8384562 [Report]

Bump. Any serious suggestions?

Anonymous 2016-10-01 19:43:15 Post No.8384569
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Anonymous 2016-10-01 19:43:15 Post No.8384569 [Report]

>>8383776
this

Anonymous
2016-10-01 10:04:50 Post No.8383765
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Anonymous 2016-10-01 10:04:50 Post No. 8383765 [Report] [View this topic]

What is the ultimate life form?

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Anonymous 2016-10-01 10:20:44 Post No.8383777
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Anonymous 2016-10-01 10:20:44 Post No.8383777 [Report]

>>8383765
hey dont post that. toadstools are very dangerous. dont you know that?

Anonymous 2016-10-01 10:34:43 Post No.8383798
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>>8383765

Anonymous 2016-10-01 11:04:19 Post No.8383826
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Anonymous 2016-10-01 11:04:19 Post No.8383826 [Report]

Shadow the Hedgehog

Anonymous
If we put a white person in central Africa 2016-10-01 09:56:30 Post No.8383756
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If we put a white person in central Africa Anonymous 2016-10-01 09:56:30 Post No. 8383756 [Report] [View this topic]

How much time would it take for the sun to damage their skin irreparably and suffer other illnesses? Would it help if they covered themselves in mud like pic related?

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Anonymous 2016-10-01 09:59:22 Post No.8383758
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Anonymous 2016-10-01 09:59:22 Post No.8383758 [Report]

He would build a house and/or invent sunscreen and not have this problem.

Anonymous 2016-10-01 10:00:51 Post No.8383761
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Anonymous 2016-10-01 10:00:51 Post No.8383761 [Report]

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

Anonymous 2016-10-01 10:18:39 Post No.8383774
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Anonymous 2016-10-01 10:18:39 Post No.8383774 [Report]

>>8383758
Perhaps I wasn't clear. I was interested if a white man or woman were to live among the native tribes in their huts and all. How long would it take until exposure to sun posed threat to them due to their lighter skin?

Anonymous
2016-10-01 07:44:39 Post No.8383659
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Anonymous 2016-10-01 07:44:39 Post No. 8383659 [Report] [View this topic]

is there a confirmed way to stop having wet dreams?
no broscience pls

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Anonymous 2016-10-01 07:47:00 Post No.8383664
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Anonymous 2016-10-01 07:47:00 Post No.8383664 [Report]

>>8383659
Why would you want to stop?

I've been trying to have them for years now.

Anonymous 2016-10-01 07:47:06 Post No.8383665
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Anonymous 2016-10-01 07:47:06 Post No.8383665 [Report]

Turn 14

Anonymous 2016-10-01 07:47:11 Post No.8383666
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Anonymous 2016-10-01 07:47:11 Post No.8383666 [Report]

>>8383659
Get sum boipucci you fucking FAGGOT.

Mathematical Fluid M
2016-10-01 05:06:54 Post No.8383507
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Mathematical Fluid M 2016-10-01 05:06:54 Post No. 8383507 [Report] [View this topic]

This was a "challenge" a professor gave us. I've tried to use index notation to solve it, but couldn't get to the end. Can anyone help anyway? Hints, solving part of it, anything

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Anonymous 2016-10-01 05:15:24 Post No.8383518
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Anonymous 2016-10-01 05:15:24 Post No.8383518 [Report]

>>8383507
try using quantum mechanics

Anonymous 2016-10-01 05:52:37 Post No.8383561
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Anonymous 2016-10-01 05:52:37 Post No.8383561 [Report]

Def of D doesn't make sense to me.

Anonymous 2016-10-01 06:10:08 Post No.8383590
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Anonymous 2016-10-01 06:10:08 Post No.8383590 [Report]

>>8383561
agreed... to submit this to a *general* forum you also must define upper-case tau.

Archived threads in /sci/ - Science & Math - 1344. page

I'm aware that Imgur.com will stop allowing adult images since 15th of May. I'm taking actions to backup as much data as possible. Read more on this topic here - https://archived.moe/talk/thread/1694/

I'm aware that Imgur.com will stop allowing adult images since 15th of May. I'm taking actions to backup as much data as possible.
Read more on this topic here - https://archived.moe/talk/thread/1694/