Docus

joined 1 year ago
[–] Docus 1 points 3 days ago* (last edited 3 days ago) (1 children)

The reason I questioned the literal battery theory / electrolysis is based on this quote from the BBC article The scientists worked out that the metal nodules are able to make oxygen precisely because they act like batteries. I have since found the original research paper (i linked it elsewhere in this post) which suggests the authors did not actually say that and aren’t sure of the exact mechanism. Your ‘voltage potential grabbing polar ends’ is not one on the known methods of splitting water into oxygen and hydrogen (see wikipedia, which all require electricity, light, radiation or extreme heat. None of which seem to apply here, and the paper also does not mention hydrogen being produced. So maybe there isn’t water being split here by these nodules

[–] Docus 6 points 3 days ago

I like that theory

[–] Docus 2 points 3 days ago (3 children)

Taking a test lol no, way too old for that. But while these lumps of metal in sea water may generate some electricity, I can’t see them magically lining up in series like in a 9V battery, and below a certain voltage (1.5) there is no electrolysis - not even a little bit. But I have since found the original article and raw data, and it seems the people that wrote it don’t know either exactly how this oxygen is created.

[–] Docus 14 points 3 days ago (4 children)

What seems to be the original study:

https://www.nature.com/articles/s41561-024-01480-8#Sec14

TLDR, they aren’t sure where the (small amounts) of oxygen comes from. And while the article is full of numbers, the section on measuring voltage from these lumps does not contain any. The raw data suggests (to me as a non expert) that the voltages measured are way too low for electrolysis of water (which requires >1.5V)

[–] Docus 5 points 3 days ago (5 children)

Electrolysis requires an electric current, so energy. What I don’t understand from this article is where that energy is coming from. Magnets have nothing to do with it, they don’t produce energy. Batteries do, and different metals in salt water may act as a battery, but then they get used up in the process.

[–] Docus 1 points 3 days ago* (last edited 3 days ago)
[–] Docus 5 points 3 days ago (8 children)

Electrolysis I get. These never ending ‘batteries’ though ???

[–] Docus 6 points 3 days ago (1 children)

Which may result in them opting out of paying into a private pension.

[–] Docus 15 points 4 days ago

I’m not sure what you are getting at. Apple offer storage and offer to encrypt that storage. You think that should be illegal? What about Apple offering storage and I encrypt stuff myself before storing it? What about a self storage company where I hire a container and put my own padlock on it? Or the self storage company has a duplicate key, but then I store a locked safe in it? And even if you could get Apple to change their ways: what about Amazon cloud storage - a lot of companies and agencies would be very unhappy if Amazon could scan their data. CSAM is a problem. But abandoning all privacy and security is not the solution.

[–] Docus 25 points 4 days ago

Obviously, they need to be monitored is a flawed view. Obviously, you want all your mail to be checked, all your phone calls to be recorded?

Obviously, most of us would like the producers of CSAM, and the people spreading it, to be held to account. But arguing that if we could just monitor these platforms we would reduce the problem is not credible.

[–] Docus 14 points 4 days ago

Any evidence that Apple use everything I store in iCloud for training their AI? Please share your evidence. There is a long list of things I don’t like about Apple, but their views on privacy are not on that list.

[–] Docus 24 points 4 days ago (2 children)

You are missing the point here that from a privacy point of view, Apple should not have the ability to see what I store on my phone, or by extension on iCloud. Just like the company that made my TV has zero business knowing what I watch on that TV.

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submitted 3 months ago by Docus to c/voyagerapp
 

When sorting by hot, I get posts with 1 upvote and no comments near the top. And it is above a post from the same community (nieuws) that has 2 upvotes. Seems to be broken.

 

cross-posted from: https://infosec.pub/post/9811127

Two of the UK's biggest supermarket chains, Tesco and Sainsbury's, were hit with technical issues on Saturday; Sainsbury's blames a software update (Bloomberg.com)

Bloomberg.com: Two of the UK's biggest supermarket chains, Tesco and Sainsbury's, were hit with technical issues on Saturday; Sainsbury's blames a software update  —  Two of the UK's biggest supermarket chains - Tesco and Sainsbury's - were hit with technical issues on Saturday.

 

My first anduril light, and first small light. Really happy with it. Thanks to you wonderful people, and the ones we left behind on Reddit, I ditched the cheap supermarket zoomies and got my first decent light from Zak’s list, a wowtac a2s. Good recommendation, great light but angled lights aren’t my favourite. Next one was an fc11. Also from zak’s list and another solid recommendation. Love it, just wish it had better runtime and lower moonlight. I use it mainly for dog walking in woods and fields, and it is good for that purpose. This TS10 fixes my moonlight issue for indoor use and is easily bright enough on full to be my backup if the FC11 ever fails me while out.

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