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File: 1628206484026.png ( 205.89 KB , 720x1498 , energy.png )

 No.10606[Reply]

So how does humanity extract more energy?
8 posts and 3 image replies omitted. Click reply to view.
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 No.10639

>>10636
>the moon has UV, solar wind and sun storms constantly bombarding it. PVs will not last longer there
Yes, in fact, they will, that's one reason why it's such an attractive engineering project. You can also make them dramatically simpler outside an atmosphere when you don't have to worry about the kind of weathering you experience on Earth.

>>10637
That's unnecessary because lunar photovoltaics are so much better than Earth photovoltaics because they don't have an atmosphere to contend with.

>>10638
You seem unaware of this but the moon actually has next to no atmosphere. We can still see craters on it that are billions of years old because it takes a really long time to overturn the lunar surface with "moon dust". People far smarter than you have been thinking about this idea for far longer. It's been feasible since the '80s.
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 No.10640

>>10639
>Yes, in fact, they will, that's one reason why it's such an attractive engineering project. You can also make them dramatically simpler outside an atmosphere when you don't have to worry about the kind of weathering you experience on Earth.
good point. there's no pesky oxygen

>That's unnecessary because lunar photovoltaics are so much better than Earth photovoltaics because they don't have an atmosphere to contend with.

there's only 30% more sunlight hitting the moon. not super impressive. this and the lack of atmosphere makes the thermal situation difficult. more on this later

>You seem unaware of this but the moon actually has next to no atmosphere

yes, and this is the problem. the moon is surrounded by what's called a dusty plasma. dust gets thrown around by electrostatic effects and there's no atmosphere to stop this. this is worst at the terminator, where the surface charge changes from positive to negative at sunset (and opposite at sunrise), which throws enough dust around that austronauts were able to see light reflecting off it. look up the "streamers" seen during Apollo. t someone who has actually worked with this stuff

what's even worse is the thermal situation. semiconductors degrade exponentially faster the hotter they get. space thermal system rely on coatings with wavelength dependent emissivity. you can't use this on a PV, obviously, at least not on the front, or you'd reflect away the very energy you're trying to absorb. your surroundings are 130°C, and your PV cells will likely be too. it might be possible to cover the entire surface underneath the cells with multi layer insulation (MLI) blankets. if you get the angles right then the temperature drops to around 65°C ((130+273)/2^0.25-273). assuming you can make them in-situ of course. there's aluminium up there at least

>People far smarter than you have been thinking about this idea for far longer. It's been feasible since the '80s.

I've read many of these papers. it's a waste of labour compared to making do with Earth
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 No.10641

>>10638
the moon is in a vacuum, you might be able to use an electrostatic charge to deal with dust.
>>10639
of course PV is nicer than a solar thermal concentrator because it's just one solid piece that makes electricity, but STC does have better tolerance for the harsh conditions of space. What's the radiation pressure on the moon, will that harm the longevity of PV ?
>>10640
How much is the temperature difference between sun and shade on the moon? If you are looking at semiconductors, it might also be worth to consider peltiers if the delta T is high enough.
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 No.10642

>>10641
>you might be able to use an electrostatic charge to deal with dust
possibly yes. but everything being electrically connected might work against you. you want high voltage to keep current low and efficiency high. but this means you also set up an E-field that will throw dust around. what might work is a thin net over everything that is appropriately charged. you have to be careful though - too positive and you attract the negatively charged dust, too negative and you attract the positively charged dust on the ground

>How much is the temperature difference between sun and shade on the moon?

temperatures fluctuate between -170°C and +130°C (100-400 K) over each month, at the equator. the ground is about as insulating as styrofoam, so it gets cold pretty fast if you say unfurl a sun shade. things get worse if you're in a valley or crater
STC is probably a better bet. on the other hand they use moving parts

>it might also be worth to consider peltiers if the delta T is high enough

and waste all the electricity you just generated?

pdf related is good reading when it comes to space thermal systems. pages 53-56 deal with the Moon
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 No.10648

Expand nuclear and oil power plant production


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 No.10624[Reply]

How exactly does one to say build a flashlight that can radiate light so dense in heat that any type of contact with that light energy will cause immediate fires or fires within less than a second if not objects that melt?
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 No.10625

Just hit your g spot, Barb.
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 No.10626

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 No.10629

>>10624
>How exactly does one to say build a flashlight that can radiate light so dense in heat that any type of contact with that light energy will cause immediate fires or fires within less than a second if not objects that melt?
use a high power laser. remember to use safety squints!
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 No.10635

Anything that powerful will cause instant and permanent vision damage.


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 No.10488[Reply]

The shovel is a simple tool used to dig various substances
You can use a shovel to dig farmland, roads, tunnels, holes, mines, foundations, or digging away unwanted substances like chemical waste and mud
A shovels ability to dig however is restricted by the density of the blade, a light plastic shovel will be able to dig conserdiably less than a heavier steel shovel, remember the denser the blade the more you can dig as the mass of the force struck towards the earth when digging overcomes the mass of the ground within a designated area.
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 No.10537

I found out that if you pour water on dirt it becomes easier to shovel
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 No.10541

File: 1627812678048.jpg ( 43.32 KB , 800x650 , shovel.jpg )

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 No.10566

>>10541
Kek you forgot to include the part where it breaks after a year of use
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 No.10621

File: 1628328942766.jpeg ( 56.4 KB , 1500x1500 , d9a9b3df-dd5b-47ba-8196-f….jpeg )

Shovels are the perfect tool to keep in your car. The best shovels are Spetsnaz shovels that can be used as an offensive tool against road rage attackers, as well as a tool to help you when your car is bogged down. Unlike a gun, you can keep a Spetsnaz shovel next to you when driving and the police will not bother you anywhere.
http://iteroni.com/watch?v=eOaEjJz-6jg


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File: 1624044683483-1.jpg ( 749.45 KB , 1333x2000 , LuneOS.jpg )

 No.9427[Reply]

Does anybody here use any Pine devices such as PinePhone or PineBook?
1 post omitted. Click reply to view.
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 No.9445

File: 1624076654985.png ( 937.74 KB , 1280x720 , 1624071559119.png )

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 No.9451

When my phone dies i'm going for a pinephone. I fucking hate android
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 No.10580

Yes. I bought a PineBook Pro to be my new primary machine. It's nice enough, but the default OS is terrible, and I haven't fixed this yet.
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 No.10582

i bought a beta edition pinephone and i run postmarketos. the default was manjaro arm; WAY buggier and harder to use than postmarketos. but the phone in general is buggy and fragile. i love the hardware switches and getting to use a linux terminal, but the microphone is now broken and it can no longer be used daily (i swapped back to my android ;_;)

pinephones need to mature a lot before even regular linux users can feel comfortable on it. need to mature even more, for even a fraction of normies. i say, keep up the good work, and i'll buy another in a few years.
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 No.10620

Does Tinder work on pinephones?


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 No.7710[Reply]

Any programmers here? I thought about simulating a population organizing resources for a while. Nothing serious, just doing it for fun. Anyone tried that before in their free time? Do you have any conceptual starting points? I will start:

Type: Person
Attributes: sex, age_range
That is to predict how much resources they themselves need and how much work they can produce. All based on averages.

Type: Resource
Attributes: quantity, state
Subtypes: metal, mineral, wood, food
The attribute "state" describes for example if the resource has been refined based on some procedure. The mentioned subtypes have further subtypes of course.

Type: Product
Attribute: kcal, components
Subtypes: electronics, furniture, dish
kcal is supposed to represent the average amount of work exerted with the most efficient available tools available to produce the product.
9 posts omitted. Click reply to view.
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 No.7722

Brainlet here, but for the "Too simple" etc etc didn't Cockshott make an open source program in Julia for planning?
Couldn't you anons use this as a base?
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 No.7724

Cockshott has a github with some relevant code: https://github.com/wc22m?tab=repositories
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 No.7725

>>7722
yes that works but the question is scale
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 No.10536

Write an OpenTTD script/bot or whatever
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 No.10610

>>7710
At such simplistic level you could just structure the whole thing on iterations, so you have a simple mathematical function that takes the current state as input and transforms it according to some chosen model to produce a new state which is then again fed as input. Then just iterate to see how it behaves through hundreds of generations.


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 No.10591[Reply]

Does anyone know a type of petrol that turns into a gas and gives off heat without turning into carbon dioxide and water vapour?
7 posts omitted. Click reply to view.
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 No.10601

>>10592
But doesnt hydrocarbons when burned into a gas naturally diffuse heat(energy) until it returns into its base temperature resulting in it becoming a fluid again? In this context fuel is ignited turning into hydro carbonic gas before releasing its heat into the water turning it into water vapour. That released heat allows the fuel to turn back into liquid with reduced mass
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 No.10602

>>10601
no. burning stuff results in a chemical change, not just a phase change
you can turn CO2 + H2O back into hydrocarbons, but it requires an entirely different process. specifically, it requires a reducing environment. if you run CO2 + H2O over hot coals in an oxygen free environment you'll generate syngas which in turn can be turned into hydrocarbons
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 No.10603

>>10601
>>10602
CO2 + H2O + 2C + energy -> 3CO + H2 (syngas)
this process requires coal and is endothermic
then apply https://en.wikipedia.org/wiki/Fischer%E2%80%93Tropsch_process which mostly requires steam and is exothermic
I'm not sure whether the combined process is endothermic or exothermic. probably endothermic because the coals have to be red hot
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 No.10604

>>10602
What about oxygen free fuel tanks where the petrol has nothing to combust with then what?
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 No.10605

>>10604
uh.. you typically don't have fire in your fuel tank


File: 1626893822250.jpg ( 83.39 KB , 807x1100 , batteryhouse.jpg )

 No.10371[Reply]

Here is a video from a nice youtube channel that combines entertainment with education.
https://www.youtube.com/watch?v=0f9GpMWdvWI

If you didn't watch, it explains the potential for using the heat storage capacity of houses to buffer energy for reducing peak loads on the grid and for buffering renewable energy fluctuations. This can be achieved by using networked devices like the so called smart thermostats that dynamically time shift energy consumption from heating and cooling in the home to low-power-demand periods of the day like late into the night.

It's a very efficient scheme, but reality will look very different. Technical optimization of this type produce a value add which could be used for the benefit of the end user like the video describes it, but that value add is going to be captured by capitalists instead. They will use any of these efficiency gains to reduce their investment-cost in fixed capital like power-transmission-lines and generators. They will not do stuff like improve the grid capacity, they will maximize switching off low income users as long as the existing capacity is enough to not inconvenience all the rich people that will pay higher rates. It will create a divide in society for the ability to use energy.

But minimizing cost and maximizing profitability at the expense of end users is not the only abuse vector. It allows for energy use profiling, which causes all sorts of privacy violations. These will have consequences like the power company being able to find out about your "inflexible power demands" where you will pay the higher electricity price no matter what. Do you like to brew hot caffeinated been juice in the morning ?, well get ready to have your addiction monetized!

This system also gives Capitalists the ability to influence demand. Capitalists do not want to sell commodities for low prices with low profit margins they want to sell for high prices with high profit margins. So what will capitalists do with the ability to control electricity demand, they will remotely switch on stuff until demand causes the prices for electricity to reach the highest level the market will bare. If they can control your heater or cooler they will crank it up to eleven during a demand-troth. If they can they will switch on the heater and the AC at the same time so you don't notice a temperature difference, but Post too long. Click here to view the full text.
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 No.10372

A friend linked that video yesterday, it took him 10 minutes to admit what that alternative was, I stopped watching after that. uygha just babbles around, get to the point smh
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 No.10519

Tech solutionism that only optimizes negative effects without attacking the cause. But prolonging the lifespan of capitalism with superficial gadgets is a profitable market right now. Top porkies (investors) just love the idea that we simply need better tech, they're the primary dupes of this snake oil sold by entrepreneurs.
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 No.10594

Just hire a union of bricklayers to build you a masonry stove in exchange for labour-day vouchers, then use logs from local kolkhoz managed horticulture area to fuel it up. Why pay the greedy capitalists for heat when you live in USA where it's above freezing point 11 months of the year, right? Just don't trip over your power cord extenders and die in a styrofoam-OSB housefire, okay?


File: 1622826507101.png ( 1.26 MB , 2000x2061 , lispers-unite.png )

 No.8985[Reply]

Lispers of the world, unite!
16 posts and 6 image replies omitted. Click reply to view.
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 No.10550

ay

hwath goingon guyth?

fewoew lithper here!
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 No.10583

Is nim a lisp?
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 No.10588

>>10583
Why would it be?
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 No.10589

File: 1628114793637.jpg ( 11.47 KB , 480x360 , hqdefault(1).jpg )

>>10543
He's right, you know.
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 No.10593

>>10543
>being a femboy is exploitation
wtf i love capitalism now


File: 1628101000231.jpg ( 28.03 KB , 768x432 , new20210204_ROW_TEGUH_APRI….jpg )

 No.10586[Reply]

Hi!

I need some real user data, namely - URLs, timestamps and some extra information about the visit. User must behave normally, so typical "pay Turks 1$ and ask them to do actions you need" does not work.

Where can I get such data? As far as I understand, botnet owners might help collecting that. Where can I rent a botnet?
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 No.10587

Added: I do not need passwords or personal data, but I do need detailed events, such as knowledge of from which page user navigated to current one.


File: 1624167488802.jpeg ( 7.54 KB , 293x172 , hands.jpeg )

 No.9462[Reply]

Why does Rust get hate here? I know its a memed language but is there any good reason not to use it other than be contrarian?
19 posts omitted. Click reply to view.
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 No.10514

>>9462
Rust is nearly inseparable from its cultish, toxic, idpol-heavy community.
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 No.10517

>>10514
No it isn't. I use it for loads of stuff and I never interact with them.
The main problem with it is its LLVM dependency and the lack of a GPL'd toolchain. Apart from this, other infra dependencies like crates.io, which is tied into github. Hopefully we can have a GPL toolchain for it and idk maybe cargo can use other package hosts than crates.io.
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 No.10521

>>10517
I think there's some work on getting it to work with gcc. Then, to be extra based, Guix could be used instead of crates. The permissive cultists that plague Rust would be seething.
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 No.10579

Rust is the effeminate man's Ada.
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 No.10581

>>9462
It's a fine language.
I've seen people seethe because it isn't C or C++.
Monolinguists are weird.


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