Nobody Cares: Technology-only Edition

[Dakota Tebaldi]

 

[Noodles]

That field diagram feels really off. I mean you don't have to lay out the circuit between the battery and bulb as a pretty rectangle, the wires could go all over, which feels like it means energy goes all over the place with the right hand rule, now always "to the right" to the bulb. Also, what happens if you flip the battery, would they not then "point to the left"?

He also mentions that the right hand rule shows that botht he flow on the top and bottom goes towards the bulb, but the current is flowing in two different directions, so wouldn't one side flow the other direction?

Also the diagram of the 1 light second wire is off, since the wire is a loop going both ways off the earth, and one length from the battery to the end is shown as 1/2 light second, but if it's a loop, it's going there and back, so the diagram shows a wire that is 2 light seconds long.

The "demo" is also meaningless as far as instantly turning on the bulb, because the cord is of course, not actually 1 light second long.

I don't like this video the more I think about it.

 

[Dakota Tebaldi]

He also mentions that the right hand rule shows that botht he flow on the top and bottom goes towards the bulb, but the current is flowing in two different directions, so wouldn't one side flow the other direction?

No because it's not the direction that the electrons are moving all by itself that decides the orientation of the electric field, it's the charge of the surface of the conductor.

The service side of the circuit is negatively charged. So on that side, it happens that the electric field is oriented in a way that the right-hand rule shows energy moving in the same direction as the electrons - away from the battery. But the return side of the circuit is positively charged - it's an opposite electric charge, so the electric field it produces is flipped. Even though the electrons are moving toward the battery on that side, the flipped electrical field points the other direction.

 

[Stora]

Just watched this and now my brain is mush

 

[Argent Stonecutter]

https://en.wikipedia.org/wiki/Skin_effect seems to disagree.

 

[Soen Eber]

Just watched this and now my brain is mush

You probably don't want to watch PBS Space Time either than.

PBS is American Public Television, with a lot of educational and cultural shows.

 

[Dakota Tebaldi]

Just watched this and now my brain is mush

From the comments:

Haven DeZeeuw
4 months ago

I’m so glad this video exists. I use to completely not even understand how electricity worked, and now I still don’t.

I dunno.....it seems to me that the idea of electricity as a stream of electrons flowing through wires the way that water flows through pipes may not be technically accurate but I think for a normie - a non-electrical engineer who just uses electricity or occasionally may have to build or fix a simple circuit, it's kind of okay to still use it? Because the predictions it makes are close enough to accurate for what we need to do.

 

[Dakota Tebaldi]

 

[Essence Lumin]

My first modem was kind of between those two, a 1200. I'm pretty sure 2400s would go down to 1200 if that is all the other side supported. That doesn't seem to be the case with the top modem. Also I thought 300s were mostly acoustic where you put a phone handset into a cradle. That was before my time though.

Someone needs to take a damp cloth to those, yeesh.

 

[Stora]

Sweet memories

 

[Argent Stonecutter]

Top one's a 1200.

2400 bps modems could all drop down to FSK at 300 because that was actually part of the protocol negotiations.

I used to be able to whistle enough of the FSK negotiations to make modems and fax machines try and sync up with me.

Hayes Smartmodem 300, 1982:

+++ATH

 

[Noodles]

I dunno.....it seems to me that the idea of electricity as a stream of electrons flowing through wires the way that water flows through pipes may not be technically accurate but I think for a normie - a non-electrical engineer who just uses electricity or occasionally may have to build or fix a simple circuit, it's kind of okay to still use it? Because the predictions it makes are close enough to accurate for what we need to do.

This is why I went Mechanical instead of Electrical. Less voodoo magic. Also, I am afraid of being electricuted honestly.

 

[Khamon]

Hayes Smartmodem 300, 1982:

This was my first. We connected with the University mainframe and several local bulletin boards. The family knew our schedule of please don’t use the phone.

 

[Free]

Here’s what happens when cops pull over a driverless Cruise vehicle

The Cruise vehicle didn’t have its headlights on.

www.theverge.com

 

[Free]

Coincidentally, this popped up today:

Researchers home in on possible “day zero” for Antikythera mechanism

arXiv preprint suggests December 23, 178 BCE; others think it was summer 204 BCE.

arstechnica.com

 

[Stora]

 

[CronoCloud Creeggan]

Hayes Smartmodem 300, 1982:

+++ATH

The first modem I ever saw was one of those, though it might have been the 1200 model, which looked the same. Belonged to my high school "computer class" teacher. He brought it in to show us how computers could connect to online services. In his case an Ag information network. He was also the Ag teacher.

My first DOOM was the SNES version, which is a fairly faithful port and has decent music, even though the frame rate is low.
The PSone version is better, but has that ambient soundtrack and not the classic tunes.
I ran the original doom wads with a source port on the PS2 Linux kit. It was either prboom or sdldoom, ran lickety split.
Did the same with YDL on the PS3, though the PS3 has DOOM Classic Complete. Whatever that version uses for sound, it isn't the equal of the SNES version, the music sounds weak.
Have a DOOM port on the PSP too.
And yes, I have DOOM I/II on the PS4/PS5/Switch. The music is better than Doom Classic Complete on the PS3. Here's a neat trick, plug a keyboard into your PS4/PS5/Switch and you can use the classic cheat codes, they work. (though they're also in a menu)

 

[Dakota Tebaldi]

Or keep Todd Howard from releasing Skyrim for it

 

[bubblesort]

YouTube released a video in multiple languages just now, in support of earth day! Yay!

... while also green washing NFTs, I think? Maybe not? It is true the the planet is non-fungible, but that's still a super weird observation to make about it.

 

[Dakota Tebaldi]

What happened in this "hack" is, the thieves gained control of the small number of accounts that the Ronin side-chain used to validate transactions, and used them to "validate" the transfer of over $600m worth of Etherium out of Ronin's official Ether wallet to the thieves' official Ether wallet.

So Ronin has no Etherium left in its possession. That means that you, a hypothetical Axie player, may have say 20 "Etherium" saved up in the Ronin side-chain, but you actually have zero Etherium. You cannot cash out of the side-chain because Ronin has no Etherium to "officially" transfer to you. If you hadn't cashed out before the heist, all the time you spent grinding in this game to "earn" money has been wasted.

Axie still hasn't been able to do anything to repair this damage.


Because the vast majority of Axie's players were playing the game to eke out a poverty wage and not because they actually like or want to play the game, they're all leaving, stranding their "bosses" who had paid for all their onboarding costs and were passively collecting a cut of their earnings.