Natural selection : they have to evolve until they are cute. No reason to protect evolution dead ends. /Sarcasm !

🐔 taco !

half a day later, developments :
https://www.aljazeera.com/program/newsfeed/2025/6/13/protesters-gather-in-iran-after-israeli-attacks
Protesters gather in Iran after Israeli attacks _ Al Jazeera _ 19 minutes ago

https://apnews.com/article/iran-explosions-israel-tehran-00234a06e5128a8aceb406b140297299
Explosions ring out across Iran’s capital as Israel claims it is attacking the country Associated Press News 7 minutes ago

alt source :
https://www.hindustantimes.com/world-news/israel-conducts-airstrikes-on-iran-declares-special-state-of-emergency-101749773298407.html
Israel conducts airstrikes on Iran, declares special ‘state of emergency’ Hindustan Times 9 minutes ago

Fucking downgraded censored video.
For good quality original one go there :
https://lemmy.world/post/31090916
(thanks to @distantsounds )

… Recently we found evidence that spacetime curvature alone without the need for an event horizon leads to black hole evaporation (… this is pair generation !). …

Great ! Now tell me : what’s the implications of this on cosmological spacetime curvature ?

Original free access article :
https://iopscience.iop.org/article/10.1088/1361-6633/adc82e
Gravity generated by four one-dimensional unitary gauge symmetries and the Standard Model

if i get even 0.01% of what this is, then, they really reached a “Theory of Everything” but it can’t be experimentally tested until quantum gravity things are detected.

i agree with all of this except, you know, when they will have to do maintenance … i guess they will be (they would be) more simply hauling the whole thing out to work at the surface of the sea … in this scenario the mechanical components would be at the top of the sphere and out of the water.

Perfect guess ! (afaik) ρ(concrete) ≈ 2.5 tons/m³
so full sphere ≈ (2.5 x 382) tons = 955 tons
they have 400 t so the cavity removes :
955 - 400 = 555 t … so 7.51m diam. cavity
… so, yes 3/4m thick wall 😌👍 !

indeed i made a very simplified calculation not taking into account increase density of salted water nor increased density because of compressibility of water at 500 m deep. Basically i took 1m³(water) is 1 (metric) ton.

… a sphere nine metres in diameter and weighing 400 tonnes will be submerged off the coast of California at a depth of 500 to 600 metres. It will have a storage capacity of 0.4 megawatt hours (400 kWh) …

i will try a rough calculations : suppose we can have concrete at $100 per ton, then it’s a minimum investment of $40,000. Also suppose electricity is stored with a large added value of 10 cents per kilowatt hour, so, for every cycle a rough gain of $40. By these numbers, 1,000 cycles would pay for the concrete … so, it may look good considering they plan a life of about 50 years for such devices.
On the other hand if competitive battery storage cost only one cents per kilowatt hour (temporary in and out storage) and if concrete and fabrication goes up 10 times to $1,000 per ton then it is not economically viable anymore.

A good calculation of profitability would need to take into account the less than 100% energy efficiency of batteries cycling and of hydraulic energy cycling, … and so many more parameters which have to be studied.

… you’d need some massive …
from the srticle :
… a sphere nine metres in diameter and weighing 400 tonnes will be submerged …

Can you calculate the weight of a sphere of 9 m of displaced water ?
No ? Well, it is 382 tons.
So, the concrete sphere is already massive by itself. “You” don’t need any complicated anchoring.
Same goes with the rest of your mechanical engineering intuitions : you did not work in this domain or study it, did you 😆 ?
Also, stress cycling is bad on most material, yes. But here it is compressive stress and the geometry is symmetric. Without further study, i want to believe this thing has good potential and my intuitions tells me it looks nice. Time will tell 😁 !

Congratulation to both sides being mature enough to agree so rapidly to this ceasefire despite (or with the help of 😋 ?) “American mediation”.

like this 21 seconds or better :
https://xeno-canto.org/193126
?
Heard them once and it was much better than any recordings !

i am irritated about those cyber attacks and really sad about the invasion into Ukraine.

But i’m glad Europe is taking steps to strengthen its military and i’m puzzle about these stupidly vulnerable infrastructures.

you forgot to put a link to any news article

it’s a basic human right to get rid of waste, including that Trump turd.

if proportional “messages” were sent by other countries, Israel would shut it’s fucking mouth. For good.

Why would the robots doing all the other jobs listen to this delusional human ?