ByteJunk

joined 2 years ago
[–] ByteJunk@lemmy.world 4 points 1 day ago* (last edited 1 day ago) (1 children)

That's over 1h of driving, even without traffic, each way. Are you mental?

Even with mass transit here, you don't do that commute every day for several years - you rent a room closer to the uni, and go back home only during weekends.

Edit: sorry I just realised you said that's total per day. Still might be cheaper to rent...

[–] ByteJunk@lemmy.world 9 points 1 day ago (2 children)

You guys are getting paid??

[–] ByteJunk@lemmy.world 3 points 1 day ago* (last edited 1 day ago) (1 children)

Right? What devilry holds them up like that, and how are they so neatly aligned, almost like in a line??

Throw them in the fire! And the towels too.

[–] ByteJunk@lemmy.world 8 points 1 day ago

Not sure if the same applies to WinZip though.

[–] ByteJunk@lemmy.world 4 points 1 day ago* (last edited 1 day ago)

True, but that's just one part of the process, and it's not comparing to the initial energy in the source fuel.

If nothing else, there's an absolute efficiency limit from Carnot's theorem, but in reality it's much lower, even for the most modern and efficient gas plants, the limit seems to be ~60%, and for nuclear or coal, it's even lower at around 30-40%.

[–] ByteJunk@lemmy.world 5 points 1 day ago (1 children)

I call it Bytejunkium, but I don't think it catched on.

[–] ByteJunk@lemmy.world 2 points 1 day ago

I'm not disputing what the current gold standard is, I'm looking for theoretical possibilities.

When you say heat, in fusion, most of the energy would be a neutron moving really fast, right? It sucks that it doesn't have a charge because then it would be really easy, but there's options here if we get creative.

Maybe there's some sort of material yet to be invented that can be slapped by a neutron and "deformed" in a way that causes electrons to shift/make holes and exploit that to make electricity.

And that free neutron will eventually decay into a proton and electron, and those have a charge, so if we keep them going around a loop until that happens perhaps we could harness it.

[–] ByteJunk@lemmy.world 4 points 2 days ago* (last edited 2 days ago)

U looking fine, girl! ❤️

[–] ByteJunk@lemmy.world 28 points 2 days ago (5 children)

...they found a clever way to induce a current using temperature differentials between the molten salt and some sort of coolant mass?

[–] ByteJunk@lemmy.world 30 points 2 days ago* (last edited 2 days ago) (1 children)

But you'd have to allow the sun to leak out of the donut, and I'm not too sure that sun-leaking donuts are OSHA approved.

[–] ByteJunk@lemmy.world 18 points 2 days ago (7 children)

I refuse to believe this.

You're telling me that Humanity is able to understand what goes on at the heart of stars, and is on the brink of being able to harness that power ("Soon TM"), and the best we can come up with is a big tea kettle? I'm not buying it.

There's got to be a better way of capturing all that energy - like, solar panels but for other types of radiation? Or if that's not possible because wavelengths or something , maybe make something glow and use normal panels? Or like, can't we take a particle accelerator and flip it around and pull energy from the particles that go zooming?

I'm sure there's a reason why all of that is hard, but surely not impossible?

[–] ByteJunk@lemmy.world 2 points 3 days ago (3 children)

I don't see any republican ever voting democrat, most of them seem too far gone into the echo chambers, which just keep growing and growing as they consolidate the media.

The only thing that may still break that path is the Iran war jacking gas prices so high that a substantial number of MAGAs abstain out of rage, otherwise goodbye America.

I'm wondering if poly market has odds for the US breaking up like the USSR in the next decade

 

Just saw the post about Helsinki opening several bridges for a similar purpose, so thought I'd share this here as well.

Porto Metro system didn't exist until around 20 years ago. Just last year, it carried more than 90 million people, and it's not stopping.

While traffic in Porto has actually gotten worse, as tourism and building rehabilitation have exploded, the investment in the metro continues.

This bridge is part of the new "Ruby line", and will provide another much needed way of crossing the Douro river, and will be exclusively used by pedestrians and cyclists, along with the metro.

This line is great because it will connect the other existing lines to a university campus and a large shopping center, while serving a fairly high density area where the residents mostly work in Porto, and have to commute daily.

 

Hi everyone!

I'm trying to control a "dumb" led light strip segment with an ESP-01S. This is fairly low current, the strip will pull 150mA-200mA max (depends on... artistic? needs).

I have two NPN transistors (2N2222), one to control the 12V supply to the white "channel" and the other the red+blue (don't need the green).

I had to pull-down the gates as I had some flickering, and it works perfectly if I manually connect the GPIOs after the ESP-01S boots.

The ESP will boot if I have the RX pin (GPIO03) pulled down on boot, but not if I pull down any of the others.

I'm not smart enough to come up with a way to have that extra pin I need to be high only during boot, while the gate it's attached to needs to be pulled down...

Any thought, other than getting something with more IO pins?

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