this post was submitted on 14 Jan 2024
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[–] Muffi 74 points 10 months ago (5 children)

"extremely rare" is a way of saying second most common that I haven't heard before.

[–] [email protected] 39 points 10 months ago (1 children)

The rare stone thing would be better for nuclear power. Find lots of rare stone, put it together in a huge pile, they get warm and cause mysterious diseases.

[–] [email protected] 3 points 10 months ago* (last edited 10 months ago) (1 children)

Uranium is actually pretty common, refining out the right isotope is the complicated part. Heck there were a couple natural nuclear reactors in a place that generated power for a few million years.

https://en.m.wikipedia.org/wiki/Natural_nuclear_fission_reactor

[–] [email protected] 0 points 10 months ago* (last edited 10 months ago) (1 children)

Isn't uranium that's pure enough naturally to cause a reaction on its own really rare? I'm referring to the Chicago Pile experiment. It was so simple that it could have been theoretically built thousands of years ago which is crazy to think about.

[–] [email protected] 2 points 10 months ago* (last edited 10 months ago) (1 children)

Not really. Every single shovel full of dirt has trace amounts. It's just gathering enough into a pile. Like I said, nature did it on earth, before humans existed. It's weapons grade uranium that's really rare

[–] [email protected] -1 points 10 months ago (1 children)

You can't get a reaction when it's that trace though. It needs to be unusually pure to be able to stack a bunch of raw ore and get a reaction.

[–] [email protected] 2 points 10 months ago

Nature did get the reaction with no humans. I don't know what to tell you

[–] [email protected] 29 points 10 months ago* (last edited 10 months ago)

Silicon is just the base material. The whole process involves a whole bunch of other chemicals, and some of those are made of much rarer stuff than silicon.

[–] [email protected] 17 points 10 months ago* (last edited 10 months ago)

Sure, Silicon works as a cheap base. Boron, phosphorus, arsenic and antimony are also used in the process, though. Other elements are also finding use in the process.

There is also a minor error in the middle about the 'sigils'. When scribing process is happening, the other elements are embedded into or deposited onto the substrate between 'scribings'.

[–] [email protected] 10 points 10 months ago* (last edited 10 months ago) (1 children)

I don't think they mean silicon, I think they mean gold, which is also a crucial component to electronics.

[–] [email protected] 1 points 10 months ago (2 children)

Gold also isn't all that rare. It's value is so high because of jewelry marketing, not rarity.

[–] [email protected] 13 points 10 months ago (1 children)

You may be confusing with diamonds. Gold is, and in fact, any element heavier than iron are pretty rare because they cannot be created by stars alone according to current models, they need more extreme and rare astrophysics phenomenons like supernova and black holes.

[–] [email protected] 4 points 10 months ago

Yes I think that is the exact confusion I had.

[–] [email protected] 13 points 10 months ago (2 children)

Gold is rare, compared to just about every other element, in accessible areas of earth. All the gold ever discovered on Earth would fit inside a 23 meter (75 foot) cube. This is about 244 thousand tons, in all of human history.

Compare this to iron, where just the United States produces 46 Million tons in 2022 alone.

There is plenty of gold deep within the Earth - it is very dense, so it sank towards the core when Earth was recently formed - but on the surface and the proximal crust, it is not found in abundance.

[–] [email protected] 2 points 10 months ago (2 children)

Is that 23mx23mx23m or 23 cubic meters?

[–] [email protected] 4 points 10 months ago

The first one, 23x23x23

[–] [email protected] 2 points 10 months ago* (last edited 10 months ago) (1 children)

Those...Are the same thing?

Edit: I thought they meant 23x23x23 as in dimensions not multiples

[–] [email protected] 6 points 10 months ago (1 children)

23x23x23 is 12167 cubic meters.

[–] [email protected] 6 points 10 months ago

Okay I see where I fucked that up

[–] [email protected] 2 points 10 months ago

That is a mind blowing fact about all gold fitting in 23 cubic meters. I had to fact check it because it sounds so absurd: https://www.bbc.com/news/magazine-21969100

[–] [email protected] 5 points 10 months ago (2 children)

Technically correct but just cause there are minerals in the ground doesn’t mean they can be extracted.

Maybe i am wrong but i keep hearing about silicon being harder to come, i suppose op was specifically speaking about the silicon usable for computing.

[–] [email protected] 7 points 10 months ago

silicon being harder to come

interesting silicone usually makes it easier for me to come

[–] [email protected] 3 points 10 months ago

The form of silicon used in semiconductor manufacturing, specific formations of sand, is becoming harder to source from the environment. Silicon the element is incredibly abundant - the vast majority of all rocks on Earth are silicates - so there isn't a risk that we run out of silicon itself any time soon.

What may happen, in several decades, is an increase in price due to the need to process more abundant rocks to obtain pure silicon.

[–] [email protected] 60 points 10 months ago (2 children)

The masks used in litography to compensate distortion of details smaller than wavelength are pretty much at the point of being magic circles.
https://www10.edacafe.com/blogs/editorial/files/2023/03/nvidia.png

[–] [email protected] 3 points 10 months ago (1 children)

Care to eli5 what you're talking about?

[–] [email protected] 7 points 10 months ago

Here's a presentation: https://www.youtube.com/watch?v=OAB6Xh8L1kk

They're basically generating weird patterns that manipulate light to project a very precise shadow.

[–] [email protected] 2 points 10 months ago (1 children)
[–] [email protected] 1 points 10 months ago (1 children)

Did YT decide to suggest this to you recently?

[–] [email protected] 2 points 10 months ago (1 children)

No I just like Steve and optics

[–] [email protected] 1 points 10 months ago

Just curious because it started throwing it into recommended for me again.

[–] [email protected] 23 points 10 months ago (1 children)
[–] [email protected] 13 points 10 months ago (1 children)

From the decay of our flesh Fortnite Porn comfort us

Blessed be the machine

[–] [email protected] 4 points 10 months ago

If we make it to the next century, yes praise the mechs

[–] [email protected] 2 points 10 months ago (1 children)

Out of the loop? I know that China is no longer allowing export of rare metals, did the situation escalate?

[–] [email protected] 2 points 10 months ago

The image is from 2022, so i doubt your missing any recent news