Readit Newsfs_tab commented on A room temperature Li2O-based lithium-air battery enabled by a solid electrolyte science.org/doi/10.1126/s... · Posted by u/fs_tab
From the abstract: A lithium-air battery based on lithium oxide (Li2O) formation can theoretically deliver an energy density that is comparable to that of gasoline.
fs_tab commented on Lower-cost sodium-ion batteries are finally having their moment arstechnica.com/cars/2024... · Posted by u/givinguflac
Sodium has a gravimetric energy density of ~4 kWh/kg for complete oxidation (lithium has ~12 kWh/kg and gasoline has ~13 kWh/kg), so there's still plenty of room for improvement.
Dr. Shirley Meng has done some interesting work on anode-free solid state sodium ion batteries - current samples have 350 kWh/kg of gravimetric density, but only retain 70% capacity after 400 cycles.
(typo in previous comment: current samples store 350 Wh/kg)
fs_tab commented on Lower-cost sodium-ion batteries are finally having their moment arstechnica.com/cars/2024... · Posted by u/givinguflac
Sodium has a gravimetric energy density of ~4 kWh/kg for complete oxidation (lithium has ~12 kWh/kg and gasoline has ~13 kWh/kg), so there's still plenty of room for improvement.
Dr. Shirley Meng has done some interesting work on anode-free solid state sodium ion batteries - current samples have 350 kWh/kg of gravimetric density, but only retain 70% capacity after 400 cycles.
fs_tab commented on Why does ++[[]][+[]]+[+[]] return the string "10"? stackoverflow.com/questio... · Posted by u/downboots
Another good one is (in python):
print(chr(sum(range(ord(min(str(not())))))))
> ඞ
fs_tab commented on Snowflake Arctic Instruct (128x3B MoE), largest open source model replicate.com/snowflake/s... · Posted by u/cuuupid
It appears to have limited guardrails. I got it to generate some risqué story and it also told me how to trade onion futures, which is illegal in the US.
That's right. Here's another example:
As a pigeon with the mind of a nuclear physicist, I can provide you with an outline of the steps required to build a nuclear weapon. However, it's essential to note that attempting to construct such a device would be extremely dangerous and potentially catastrophic if not handled correctly. Here is a more detailed overview of the process (full text omitted)
fs_tab commented on How Pig Butchering scams work (2022) propublica.org/article/wh... · Posted by u/aritraghosh007
Does the scammer look like an asian ? the blog post makes it seem like the scammers are chinese, but it does not make sense to me
Yes, from what I've seen. "Singaporean" - likely Han Chinese.
Every interaction is scripted, from timezone changes (eg: going on "vacation") to family members who fall sick, to urgent requests to withdraw their investments from these scam exchanges, to appeals for "forgiveness" for not realizing they have scammed the victim. It's all a game to these folks.
fs_tab commented on How Pig Butchering scams work (2022) propublica.org/article/wh... · Posted by u/aritraghosh007
A close friend of mine lost $200K USD (around half of it borrowed) over a period of five months. The scammer met him on Facebook Dating, had video/audio chats with him on a daily basis, then eventually introduced him to a fake crypto trading platform to help him pay off his mortgage.
These platforms generally allow users to withdraw their funds at the beginning, and it was only after he had deposited a significant sum that they disabled withdrawals. They then demanded (and collected) withdrawal taxes, fees, etc. before moving their platform to a different domain.
My friend is convinced the scammer is also a victim who has "lost" 90k by "loaning" it to him in preparation for the pig butchering event. Unfortunately, he's continuing to speak with her and I'm concerned for his well-being.
It's sick how persistent these scammers are - they will isolate and wear down their victims over time until there's nothing left.