this post was submitted on 04 Sep 2024
131 points (95.2% liked)

Technology

58061 readers
3472 users here now

This is a most excellent place for technology news and articles.


Our Rules


  1. Follow the lemmy.world rules.
  2. Only tech related content.
  3. Be excellent to each another!
  4. Mod approved content bots can post up to 10 articles per day.
  5. Threads asking for personal tech support may be deleted.
  6. Politics threads may be removed.
  7. No memes allowed as posts, OK to post as comments.
  8. Only approved bots from the list below, to ask if your bot can be added please contact us.
  9. Check for duplicates before posting, duplicates may be removed

Approved Bots


founded 1 year ago
MODERATORS
top 32 comments
sorted by: hot top controversial new old
[–] [email protected] 88 points 1 week ago

ancient alchemists popping off in their graves rn

[–] [email protected] 29 points 1 week ago (1 children)

First fracking now large amounts of electricity to be pumped underground too!

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

Gotta get that 5g out

[–] [email protected] 24 points 1 week ago* (last edited 1 week ago) (1 children)

Humanity was not responsible enough with bitcoin to learn how to turn electricity into actual gold. Some nerds going to start setting up Tesla coils in caves soon.

[–] [email protected] 8 points 1 week ago (1 children)

I mean... actual gold isn't crazy valuable these days, is it? It's used in quite a bit of electronics for its corrosion resistance and conductivity IIRC.

[–] [email protected] 18 points 1 week ago (3 children)

Gold prices have risen steadily for a long time, partly because of its use in electronics. Over $2500/ounce now. But another quirk of gold is the ease with which we can make very thin coatings of it over other materials, sometimes only a few atoms thick. So it is commonly used, but in very very small amounts per device.

[–] [email protected] 4 points 1 week ago (1 children)

TIL. Electroplating is cool stuff

[–] [email protected] 4 points 1 week ago (1 children)

The main reason to electroplate things in gold is that corrosion resistance.

The thinner the coating, the better. Mostly because gold isn't a very good conductor.

Copper is one of the best conductors available. But the corrosion is the problem. It's nonconductive.

Also a fun fact. Stainless steel is a better conductor than gold. But gold is slightly easier to use in electroplating.

[–] [email protected] 6 points 1 week ago

I think you might want to do a little digging in your undergrad science books:

The units of electrical conductivity are measured in siemens per meter (S/m). Here’s the electrical conductivity of a few metals:

Stainless Steel: 1.0 - 1.5 × 10^6 S/m
Aluminum: 3.77 × 10^7 S/m
Copper: 5.96 × 10^7 S/m
Gold: 4.52 × 10^7 S/m
Silver: 6.30 × 10^7 S/m

In this list silver has the highest conductivity, and stainless steel the lowest conductivity.

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

If someone works out how to make gold cheap. Then the current value of all gold will collapse and there were be a huge supply of shit that's been covered in dust in a vault for 100 years.

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

Very true. Unfortunately, this process just pulls gold from dilute sources and gathers it into nuggets, from small ones to very very large. No gold is being made new though, that would be great.

[–] [email protected] 2 points 1 week ago

There is a shit load of gold out their in minute concentrations

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

Most of the gold's price comes from it being used in jewelry and as an investment. Less than 7% of gold is used by the tech industry

https://www.statista.com/statistics/299609/gold-demand-by-industry-sector-share/

[–] [email protected] 3 points 1 week ago* (last edited 1 week ago)

Well, that is the amount gold that is mined or recycled every year that is used in electronics. The thing is though, a lot of the gold used in electronics is never recovered. So a considerable amount of the gold used in electronics is removed from from circulation in a way the gold in jewelry or bullion or coins isn't. It isn't the primary driver of gold's price increase, but it is a significant factor.

[–] [email protected] 23 points 1 week ago (3 children)

Okay, for a second, I thought that somebody had figured out how to make gold in a lab, which would then obviously bring down the price dramatically, because it would no longer be a super precious metal.

[–] [email protected] 24 points 1 week ago

We can make gold in a lab, it has been done. Let us just say there is a reason those who want $$$$ to build another super collider are not talking about making gold in them.

[–] [email protected] 14 points 1 week ago (1 children)

It's not gonna be like alchemy. Electroplating is already a thing.

[–] [email protected] 12 points 1 week ago (1 children)

But damn it man, I wanted to turn a chunk of coal into gold LOL.

[–] [email protected] 44 points 1 week ago (4 children)

when you’re a star, they let you do it

[–] [email protected] 17 points 1 week ago
[–] [email protected] 10 points 1 week ago

You, Sir, win the internet

[–] [email protected] 1 points 1 week ago

I didn't get the reference

[–] [email protected] 1 points 1 week ago

I'm feeling like a star. They can't stop my shine. I'm loving cloud nine my heads in the sky.

Jason Derulo - Ridin' Solo

[–] [email protected] 5 points 1 week ago (1 children)

We've known how to turn lead into gold for ages, you just add a couple of protons, neutrons, and electrons. Long story short: Uses a fuckton of energy, not worth it.

Fun fact: When Ernest Rutherford and colleagues put together the first paper about their findings they avoided the word "transmutation" like the plague. It has been considered impossible since before alchemy became chemistry and even though he was publishing in physics chemists would probably still have had his head.

[–] [email protected] 1 points 1 week ago (1 children)

Dumb question but would using nuclear energy make it more feasible?

[–] [email protected] 1 points 1 week ago

Nuclear energy is more expensive than renewable so not really, no. Having a good combination of starting materials to minimise the amount of energy you need to fuse everything together, or even starting out with something heavier, would be the way to go.

For more details ask a nuclear physicist of which I'm not one. Honestly there doesn't seem to be much work on it.

[–] [email protected] 14 points 1 week ago

That’s alchemy, not science in good faith.

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

Libertarians about to get off on having gold mines in their garages.

[–] [email protected] 6 points 1 week ago

And you thought GPU crypto-mining farms were using a lot of electricity...

[–] [email protected] 4 points 1 week ago (1 children)

Gold prices after this 📉📉📉

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

You still need the same amount of gold atoms at the input.

[–] [email protected] 2 points 1 week ago

Gold prices after this 📈📉📈