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Sandwich




Ethanol Synthesis

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- Wed, 15 Apr 2020 10:50:34 EST Df20hsai No.79841
File: 1586962234428.jpg -(12787B / 12.49KB, 1280x472) Thumbnail displayed, click image for full size. Ethanol Synthesis
How do I easily make ethanol from common/easily accessible items? Going to use it as a disinfectant (concentrating it comes later). I want to do it chemically so no yeast.
8 posts omitted. Click View Thread to read.
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Albert Murdworth - Thu, 30 Apr 2020 13:28:31 EST Brp5wD14 No.79860 Reply
>>79843
>Is there REALLY no way to make literally one of the simplest molecules out there without yeast?
I'm afraid no. Think about for long long alcohol has been around. If there would be some easier way, people would've figured it out by now (remember we had the prohibition and the immediate post-war era in Europe).
There are several routes you can take, all of them are very rough and not feasible in your basement:

  • Reduction of acetic acid or acetaldehyde (sodium hydride)
  • Oxidation of ethylene (oxygen + catalyst + pressure)
  • Basic hydrolysis of ethyl esters (sodium hydroxide)

You won't get around fermentation. Just ferment some paper like NileRed did and distill to 98 Vol.-%. You can quench the remaining water either by using a molecular sieve, by addition of acetic anhydride or by adding a decent amount of sodium sulfate and subsequent filtration.

You could also just try and distill vodka I guess lol
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Sidney Brigglegold - Tue, 30 Jun 2020 22:51:22 EST FFiTLgCF No.79911 Reply
>>79841
>>79841
i was under the impression it pees out alcohol and farts out co2. Is it really yeast poop? i think its yeast pee
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trypto - Sat, 04 Jul 2020 22:26:59 EST nN2cbQXL No.79913 Reply
>>79911
Yeast aren't animals, so it's neither. Pee/poop is just a metaphor. Alcohol is a byproduct of their metabolism. The technical term for what alcohol is to yeast is a "metabolite" or "metabolic waste".

Pee/poop are acceptable metaphors. It's liquid, so "pee" might be a bit more true. But poop is funnier, so it's definitely recommended

Net Zero homes

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- Thu, 28 May 2020 13:08:58 EST 1Kyv+UG+ No.79893
File: 1590685738348.png -(373169B / 364.42KB, 1196x934) Thumbnail displayed, click image for full size. Net Zero homes
do you think we'll have a "net zero" home in our lifetime? A house that, once you got it all bought and set up, costs NOTHING. No electricity bills or anything.
1 posts omitted. Click View Thread to read.
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ANTRUSTEDENGINEEEEEER - Wed, 24 Jun 2020 16:48:36 EST tmpDgDo/ No.79908 Reply
IM AN ENGINEERRRRRRRRRRR AND WHAT YOU SAY, YEA ITS POSSIBLE TO USE HEAT PUMPS TO MOVE THE HEAT FROM X SOURCE, ONLY ONE FUCKING DETAIL TO WORK IT NEED WORK!!!!!!!!! AND IF YOU WANT TO PUMP HEAT FROM ONE MEDIUM TO ANOTHER YOU NEED WORKKKKKK, THE WORK CAN BE DONE BY A COMPRESSOR OR SOMETHING LIKE THAT WHICH REQUIERES ENERGY (SORRY FOR MAY BAD ENGLISH)
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Clara Gagglewock - Fri, 31 Jul 2020 15:09:24 EST wn+wI+7I No.79929 Reply
>>79904
Heat pumps are basically AC that can cool or heat.

As the caned engineer says, you need energy to move heat. Which means more heat.

In cooling AC is wasteful and we need to cut down the use of it, but as a heater it's actually as efficient as it gets. Gas is as good but heat pumps don't directly rely in a non renewable (and around here, Schooln controlled) source and could be run off renewables with enough energy storage or renewables and nuclear if we make sure the contractors building them don't act as you'd expect them to.

Neural experiment

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- Wed, 05 Feb 2020 15:28:16 EST KskywJ2d No.79763
File: 1580934496409.jpg -(68450B / 66.85KB, 730x564) Thumbnail displayed, click image for full size. Neural experiment
If you look at this moving picture for a while
https://www.youtube.com/watch?time_continue=3&v=KzHBB9vCoX8&feature=emb_logo
https://www.youtube.com/watch?v=F-GG0i9VgBM&feature=emb_logo

What do you experience after viewing ?
3 posts omitted. Click View Thread to read.
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Priscilla Novingwater - Sat, 20 Jun 2020 22:47:03 EST 6NKw3Abc No.79906 Reply
hurt like the right side of of my brain

Complex Analysis Reading Group (Stein)

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- Sat, 20 Jun 2020 14:52:16 EST rAZBH9s8 No.79902
File: 1592679136082.jpg -(14984B / 14.63KB, 262x262) Thumbnail displayed, click image for full size. Complex Analysis Reading Group (Stein)
hey guys, I'm pretty bored this summer and dont have anything to do because of the lockdown. I need to brush up on some math so I'm going to end up self studying some complex analysis (Stein's book)

If anyone would like to join in and form a reading group, we could meet up once a week over voice/text chat and discuss the content and exercises. If you're worried about timezones I'm available all day and dont mind making accommodations between North America, EU, and more.

Brain and illusions

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- Fri, 10 Jan 2020 11:23:33 EST ZwEVdfrb No.79737
File: 1578673413450.jpg -(30765B / 30.04KB, 580x290) Thumbnail displayed, click image for full size. Brain and illusions
When we watch illusions https://www.youtube.com/watch?v=RgNcjak0bQU&feature=emb_logo https://www.youtube.com/watch?v=G6CiuRQHv3w&list=LL8Hl4wSKvUUL8qKlFE4P0Zg&index=2&t=35s , does your brain rearrange and adapt to the illusion, or is it the fault of our brain and its limitations ?
7 posts omitted. Click View Thread to read.
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birn - Fri, 29 May 2020 14:28:39 EST AliR2rVm No.79895 Reply
>>79737
0000000000 illusions doesnt dwell in any form of your auctal reali
atari for life
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Edward Nicklestone - Wed, 10 Jun 2020 17:36:20 EST NlteSJoF No.79900 Reply
u dont smoke dmt ? huh.

shoe science

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- Thu, 14 May 2020 19:42:20 EST /34S98i5 No.79877
File: 1589499740558.jpg -(118523B / 115.75KB, 1000x588) Thumbnail displayed, click image for full size. shoe science
so im having relatively high arches like in pic related. now i want to buy myself some high heels, but the problem is, when i step the heel comes off. i dont know why. i want you to help me figuering out the physical leverage, so that i can buy online successfully.
please explain the physics so that i understand why the heel comes off and so that i can estimate wether the shoe will fit.
5 posts and 5 images omitted. Click View Thread to read.
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Phoebe Bribberpat - Sat, 16 May 2020 16:51:56 EST P9DeFS5a No.79884 Reply
>>79877
What do you mean the heel came off? Which way?
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Samuel Brucklechack - Sun, 17 May 2020 03:39:27 EST V73/pyI6 No.79885 Reply
1589701167267.jpg -(101079B / 98.71KB, 2000x2574) Thumbnail displayed, click image for full size.
>>79884
thank you for replying!

when i take a step i put the (high) heel first down, then i shift my weight to the metatarsal and when i roll onto the ball of my feet and lift the high heel off the ground, thats when the heel strap comes off.or, in the case of the blue shoes, my heel itself lifts off the cap. so like the moment of demi pointe like pic related, the heel is almost vertically in line with the ball of my foot, and i still dont get it which straps need to be in order that the inner sole sticks somewhat close. so i just assume its the mobility in ankle that needs a strap but its so weird, because i tried a modell similar to the red one only with thinner curved strap and heel came off. i think its like a redirection of forces and basically same pattern but just different placement of straps, im confused which placement i should go for.please shed some light.
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Polly Bublingforth - Tue, 09 Jun 2020 14:52:39 EST vEY3fKlq No.79899 Reply
>>79885
right. if i buy the wrong modell its your fault

thread‘s end bastards

Math mystery: Langston's ant

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- Mon, 25 May 2020 03:29:05 EST d9X/ura4 No.79891
File: 1590391745451.gif -(93536B / 91.34KB, 353x353) Thumbnail displayed, click image for full size. Math mystery: Langston's ant
Years ago I watched a documentary about weird math mysteries and there was one bit about patterns emerging from seemingly random systems. One of them, called Langton's ant, consisted of a virtual ant on an infinite grid. The rules were simple, and IIRC, they went something like this: the ant begins on an all-white grid. Moving forward one space, if it enters a white square, the square turns black and the ant makes a right turn and moves forward one square. If the ant encounters a square that is already black it turns right andoves forward. The ant proceeds to move very chaotically until suddenly, at around 5000 moves, it falls into a repeating pattern that it never escapes from. This blew my mind all those years ago and I still wonder why the hell the pattern emerges from the chaos. Obviously, it's not actually chaos since there are rules that the ant follows and it's probably those constraints that give rise to the pattern, but then why does it take 5000-odd moves for the pattern to crop up? Is there some additional rule that can let the ant avoid the trap and continue moving randomly?

Someone here probably has this thing figured out, right?
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birn - Fri, 29 May 2020 14:26:08 EST AliR2rVm No.79894 Reply
>>79891
its just about highsnse tv with a inbetween. qwe call it a dead pixel. the true mystryies is if anyone has the balls

subject

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- Fri, 31 Mar 2017 00:52:19 EST 8Bqb2ojy No.78616
File: 1490935939445.jpg -(217743B / 212.64KB, 1674x670) Thumbnail displayed, click image for full size. subject
>hehe yeh bro meth is super simple to make just shake and bake my dude heh
4 posts and 1 images omitted. Click View Thread to read.
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jet fuel paint hardner meth in a crockpot - Thu, 12 Apr 2018 13:23:45 EST 2Sv5WqAP No.79061 Reply
when i was in prison every one talkn about orange crush rc fuel an dupont acrylic paint hardner mix together in a crock pot 12 low 12 high and wala rc fuel has nitromethane andpaint hardner has well fuck i dunno but we on ta sumthin
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Martin Pickfuck - Sat, 28 Mar 2020 06:08:07 EST 2jHBGjxs No.79818 Reply
>>79061
Uhm, yes this method works tried and true. Just got done doing it. Any acrylic enamel hardener. 110 octane racing fuel. Must filter to get lead out. P2p short method
>>
EasyE - Fri, 22 May 2020 02:02:47 EST 74Ra0Krc No.79889 Reply
>>79818
What happens after you put the 2 together for 12 hrs on hi and let cool for 12


Roulette System

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- Mon, 06 Apr 2020 16:25:02 EST YxLJBIAo No.79831
File: 1586204702162.png -(816204B / 797.07KB, 1324x656) Thumbnail displayed, click image for full size. Roulette System
I've created a system for roulette that of course is not a 100% certain profit over time, but depending on your starting bankroll, the odds can be a fraction of a percent.

Essentially on my system I place 8 chips on the final 3rd section, so if the ball lands here I will get my exact money back (3 to 1)

Including 0 that leaves 25 numbers. I cover 11 of those with a few split bets too. The strategy is that if I miss a final 3rd or my numbers, I double the bet. If I hit a number that is not in the final 3rd, go back to the starting bet which in total is $6 with $0.25 chips. If I get a final 3rd result (the 3 to 1) I repeat the bet whatever the amount.

So we can negate the final 3rd section and set the odds to 11/25 as a win, however it depends on your starting balance. If I start with $6 and miss I double to $12, miss again double to $24 and so on. The odds of say missing a 11/25 spin 6 times in a row is what? I don't actually know which is why I am here, but I think it's 2. something.. Anyway, you can see that if you have say $11,000 you can make money on this method easily. I play on live tables and not computer generated games. I often play up to a double of $192, which as a total of all losses plus the 192 is $380 plus. When I get $200 profit I leave and cash out the profit.

Thoughts?
4 posts omitted. Click View Thread to read.
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Nell Murdbanks - Fri, 24 Apr 2020 15:46:46 EST QW41opDA No.79851 Reply
My father, back in the 90's, was trying to write a computer program to come up with lotto numbers that hadn't won yet, as he was convinced that somehow there was a greater chance they would be picked.
He was kind of stupid that way. Clever, but stupid, you know?
>>
Clara Sullywedge - Tue, 28 Apr 2020 00:23:50 EST vEIr/ZBw No.79853 Reply
I think you would make a lot more profit if you got a real job.
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Cyril Fiblingkere - Tue, 05 May 2020 00:03:45 EST gadeAzJC No.79875 Reply
>>79835
> I am speaking about the same bet over the course of 6 plus bets
So are the casinos. I once found an online casino that calculated the odds wrong on black jack when making their rules. I got them for a couple grand and they went out of business shortly after. If they've been in business for more than a year, good luck.

fear of the electromagnetic spectrum

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- Sun, 24 Nov 2019 07:41:22 EST W+fNKKVr No.79692
File: 1574599282211.jpg -(97371B / 95.09KB, 500x1141) Thumbnail displayed, click image for full size. fear of the electromagnetic spectrum
So with this 5G coming up we're hitting a new wave of protests, meetings etc etc about the alleged dangers of all kinds of microwaves, and I noticed a lot of people around me are absolutely convinced wifi, cellphones and even microwave ovens are horrible for their health.

I'm not well versed on the subject of the effects of certain wave lengths, but aren't all wavelengths we use in the modern world non-ionizing and incapable of causing cancers? Are there any real reasons to be afraid or is it just people being afraid of things they do not understand?
13 posts omitted. Click View Thread to read.
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Charles Dartham - Fri, 01 May 2020 22:35:12 EST bTDTgq6J No.79869 Reply
https://emfscientist.org/index.php/emf-scientist-appeal
>Numerous recent scientific publications have shown that EMF affects living organisms at levels well below most international and national guidelines. Effects include increased cancer risk, cellular stress, increase in harmful free radicals, genetic damages, structural and functional changes of the reproductive system, learning and memory deficits, neurological disorders, and negative impacts on general well-being in humans. Damage goes well beyond the human race, as there is growing evidence of harmful effects to both plant and animal life.
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S1759078711000122
>Nevertheless, they showed a modest increase in the intracellular level of IL-1b, a major pro inflammatory CYTOKINE produced and release by keratinocytes in response to various stimuli [62]. This result suggests that 61.2-GHz exposure could activate keratinocytes. Moreover, the in vivo study of Makar et al. [63, 64] on mice irradiated at 61.3 GHz and 31 mW/cm2 also showed a pro-inflammatory effect initiated by activation of free nerve endings in the skin.
https://www.rfglobalnet.com/doc/fixed-wireless-communications-at-60ghz-unique-0001
>At the millimeter wave frequency of 60GHz, the absorption is very high, with 98 percent of the transmitted energy absorbed by atmospheric oxygen.
https://www.youtube.com/watch?v=BwyDCHf5iCY [Embed] [Embed]
>Medicine PhD explains the health concerns of 5G, cell phones as well as research suppression by telecommunications industry.
https://www.ncbi.nlm.nih.gov/pubmed/27552133
>The measurements of all trees revealed significant differences between the damaged side facing a phone mast and the opposite side, as well as differences between the exposed side of damaged trees and all other groups of trees in both sides. Thus, we found that side differences in measured values of power flux density corresponded to side differences in damage.
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Charles Dartham - Fri, 01 May 2020 22:39:25 EST bTDTgq6J No.79870 Reply
https://www.rfglobalnet.com/doc/fixed-wireless-communications-at-60ghz-unique-0001
>At the millimeter wave frequency of 60GHz, the absorption is very high, with 98 percent of the transmitted energy absorbed by atmospheric oxygen.

this is the troubling thing, because at this frequency oxygen ionizes. when this happens, hemoglobin in your blood cannot bond to oxygen, meaning you suffocate until you die from a lung attack, multiple organ failure, and hypoxic encephalopathy, even if you are on oxygen. but as was provided earlier, you don't have to reach 60ghz to have adverse effects. they happen right now at existing 3g and 4g levels. it's no longer a layman's opinion.
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Cyril Fiblingkere - Mon, 04 May 2020 23:54:29 EST gadeAzJC No.79874 Reply
If you read the manual on your cellphone, it tells you don't talk on your cellphone by holding it to your ear. That's because cellphones exceed the FCC max exposure limits when it's that close. Non-ionizing radiation is capable of doing harm. FCC limits are based off thermal effects. There are a few studies that have shown non-thermal effects. It's an understudied part of science.

The big advantage of the higher frequencies is antennas can produce more gain and directivity at the same size. This can lead to higher ERP(effective radiated power). ERP if a big factor when doing RF exposure calculations. For example if your transmitter is putting 10W in to a phased array antenna that's forming a beam in your phone's direction with 40dB gain, you're on the receiving end of an effective 100kW compared to an omnidirectional antenna. So is anyone who is on the same line as you from the antenna. The effects of that depend greatly on distance and the unstudied nonthermal effects of RF.

The one provable result of this directivity is even more loss of privacy. A 40dB antennas beam is incredibly thin so the beamforming algorithm has to know a lot about your location. If you think they're not putting that info to other uses, I envy you.

Wolfram vs physics

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- Tue, 14 Apr 2020 22:56:11 EST MUj3j7nh No.79839
File: 1586919371121.png -(420149B / 410.30KB, 1236x868) Thumbnail displayed, click image for full size. Wolfram vs physics
Stephan Wolfram (the computational physics guy) and his team appear to have the groundwork to a fundamental theory of physics, basically based on graph operations. Special relativity and quantum mechanics can be derived from this model, mindbending stuff:

https://writings.stephenwolfram.com/2020/04/finally-we-may-have-a-path-to-the-fundamental-theory-of-physics-and-its-beautiful/
2 posts omitted. Click View Thread to read.
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trypto - Tue, 28 Apr 2020 20:54:03 EST wdDOlDIo No.79855 Reply
>>79854
> or Conway's Game of Life
Yup. That's one simple cellular automata. It was the first, and it's what got Wolfram started on his CA research.

> this sounds similar to fractal mysticism to me,
Kinda, I haven't read OP's link yet, but Wolfram has been saying the same thing for about a decade about these systems. And while it's really fascinating how he can explain pretty much any phenomenon as automata, it's not at all surprising. Why? Because this:

>Start with a very basic seed pattern or equation or the like, apply some simple rules and (here's the kicker) iterate on that to infinity and viola! Out pops something infinitely complex and super cool looking.
Yes. You're describing how a lot of fractals are made. But it's also how many physics simulations are done. You're also kind of explaining what a 'turing machine' is.

Think of a "turing machine" as a fancy way of saying "something that can function as a computer."

Now, a "turing complete machine" is a turing machine which, if given enough memory and time, can calculate the state of any other turing machine.

Cellular Automata ARE turing complete machines. Anything that a computer can theoretically calculate, a CA can calculate.Because of this equality among turing complete machines, it's a bit weird that Wolfram places automata as the one model to rule them all.

At least that's the criticism of Wolfram that I read a long time ago. Personally, I think CA are awesome, and I'll definitely read OP's link later.
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Albert Bardforth - Tue, 28 Apr 2020 23:43:36 EST vEIr/ZBw No.79857 Reply
>>79855
Iff Wolfram's turing machine can predict even one scientific breakthrough then it will be the most amazing thing in the world, and knowing that there are thousands of the world's top minds going after this prize, I shall sit here and wait patiently for that to happen.

I think these graphs are a model of our own way of thinking, in reverse. We started out by becoming self-aware in a chaotic environment of infinite complexity, so we invented things like philosophy and religion to try and make some sense out of it. Then we honed our understanding down to a scientific method. The way we make sense of things in general is to try and model it with abstraction. We try and break things down to their simplest form, because simple things are easier to understand. We took the top-down approach over millenia of careful observation, where these graphs and rules of Wolfram's theory are going in the other direction. Start out with something extremely simple, mix in something special (the theoretical key to the universe) and let the computers see if you were right. Sorry, I'm still trying to wrap my head around how this is going to lead to a reliable scientific breakthrough, but I'm not writing it off as impossible as of yet.
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Charles Dartham - Fri, 01 May 2020 21:15:00 EST bTDTgq6J No.79861 Reply
>>79855
the thing with this fractal mysticism is that no scholastic authors would touch the 'schizo LSD theory' until after Nassim's paper won awards. It's the same shape that buckminster fuller discovered, and you could use almost any vector matrix to pull all this off. Some physicists are working with a shape called m0, or Mzero, which is really an infinite fractal of circles. obviously the simples solution is the best solution, but mainstream science won't touch that solution. gives them the heebie jeebies, and inside that shape as it moves we find almost all the shapes from every major religion, like jigsaw pieces.

that's too far out for them. they are desperately searching for any shape that can pull it off, but it's never going to be computationally efficient compared to the real thing, which is a platonic solid with 4 platonic vectors it can translate and recurse across. It's potential is practically limitless and will redefine math forever, but it's too religious for them.

if they fail to adopt it, then their science will fall behind compared to any faction that can put their ego aside long enough to use it. that faction will create a breakaway civilization in short order.

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