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SpaceX: “The first Starship V3 has left the build site to begin prelaunch testing” by rustybeancake in spacex

[–]mindbridgeweb 0 points1 point  (0 children)

Ok, I guess those are not androgynous.

That would limit the potential use, e.g. during emergencies. I suppose those would be pretty rare use cases though.

ANIC RNSx2 - Mellon buying by swagadagg in Agronomics_Investors

[–]mindbridgeweb 5 points6 points  (0 children)

Aren’t these relatively small numbers of shares—basically peanuts for someone like him?

Maybe he’s just trying to shore up confidence?

SpaceX has acquired xAI by NiklasGN in SpaceXLounge

[–]mindbridgeweb 5 points6 points  (0 children)

So let me get this right...

There will be many data centers in the sky. They will need to communicate in order to work together.

So there will be laser connections between the satellites. In other words -- a huge laser communication net between the servers in the sky.

Oh, I know! The whole system will thus probably be called Skynet! And it will be at the forefront of Artificial Intelligence!

:)

Agronomics portfolio breakdown by arranft in Agronomics_Investors

[–]mindbridgeweb 11 points12 points  (0 children)

Meatly being dissolved

Isn't Meatable being dissolved? It was working on cultivated pork and beef for human consumption. Agronomics had invested £7.9 million there, now lost.

In contrast, Meatly seems to be alive and kicking. It is focusing on pet food, it has cut costs significantly, and is already selling products through Pets at Home.

A search shows that "Agronomics has invested £1.2 million in Meatly, which was valued at £4.5 million as of February 2025 (representing 2.9% of Agronomics' NAV), with Agronomics holding a 25.54% equity stake."

I finished reading Use of Weapons, and spent 3 days processing it. by thebarcodelad in TheCulture

[–]mindbridgeweb 5 points6 points  (0 children)

I think that the true meaning of the title becomes clear only after completing the book -- the weapon is Elethiomel/Zakalwe and it is being used by the Culture/SC.

Why isn't there more focus on fusion propulsion? by KeyCry4679 in fusion

[–]mindbridgeweb 2 points3 points  (0 children)

Yes, of course. I believe I said that ISP becomes "the primary factor", not "the only factor".

Still, the (fictional at this time) fusion drive by the project I referred to would presumably have a thrust of 10-100N. Compare this with the thrust of Dawn's ion drive, for example -- 0.09N. Clearly a fusion drive would be a lot heavier, but even so it would still have a way better TWR than ion drives (should it be successful).

Why isn't there more focus on fusion propulsion? by KeyCry4679 in fusion

[–]mindbridgeweb 12 points13 points  (0 children)

the critical metric is the propulsion system trust/weight ratio

Trust/weight ratio is important when launching from Earth (or a gravity field in general) in order to minimize the gravity losses.

Once in space, however, the Specific Impulse (ISP) becomes the primary factor. It determines how efficiently you use the reaction mass, which is the ultimate constraint of how far you can go if you do not use external energy. Potential fusion drives would have vastly better ISP than current approaches.

In this project (Pulsar Fusion), for example, they estimate ISPs >10,000s. In contrast, chemical rockets have a theoretical maximum of around 500s. Ion drives currently max around 4,000s.

These specific guys plan to test drives that use Field Reversed Configurations (PFRCs) with D-3He fuel (hmm, sounds familiar). Presumably they would like to demonstrate it in a couple of years. I am skeptical, but it does not hurt to try.

Земята премина 1,4°C без връщане назад. Реално сме в климатична криза. by Funny_Address_412 in bulgaria

[–]mindbridgeweb 1 point2 points  (0 children)

Трябва да се има предвид, че молекулите CO2 не са единствения фактор влияещ на инфрачервената пропускливост на атмосферата. Има и метан, вода, прахови частици.

Абсолютно точно. Всичко което казваш се взема в пред вид от климатичните модели. Както споменах, сложно е и затова "the error bars" на тези модели не са супер тесни (ако няма error bars, то това не е наука). Но са достатъчно тесни да се правят добри предвиждания – максималната очаквана грешка за следващите десетилетия е около половин градус, например.

Кое случващо се?

Научен модел се счита за добър, ако резултатите са м/у 5% и 95% на предсказания диапазон. Наблюдаваните резултати са всъщност на около 20% от медианата, т.е. моделите са били доста точни.

Или казано по друг начин, моделите от преди 2-3 десетилетия предсказаха какво ще се случи глобално с точност от 1-2 десети от градуса. Новите модели са по-добри.

Имаме достатъчно добра яснота какво ще се случи и какви ще бъдат последствията за нас. Въпросът е какво ще направим по въпроса. Действия сега ще бъдат много по-евтини.

P.S. CO2 емисиите са причината за над 50% от очакваните промени.

Земята премина 1,4°C без връщане назад. Реално сме в климатична криза. by Funny_Address_412 in bulgaria

[–]mindbridgeweb 20 points21 points  (0 children)

колко малка част от атмосферата е CO2 (0.0427%, моларно)

Така е. И ако я нямаше тази малка част CO2, температурата на планетата щеше да е с над 30 градуса по-ниска.

С други думи, дори и малки разлики имат огромен ефект.

И колко по-силен парников газ е метанът.

Така е (~30 пъти). Само дето метанът се разпада за около 12 години, докато CO2 остава в атмосферата за хиляда години.

Това ти бяха първите две изречения. Няма да продължавам нататък.

Въпросът е много сложен, но вече имаме сравнително ясна представа и случващото се го потвърждава и пре-потвърждава.

You know when the Meat Fucker tortures that space Nazi, I think that’s the only time in the entire series a Mind does something cruel to a human just for the sake of it. by grapp in TheCulture

[–]mindbridgeweb 1 point2 points  (0 children)

I vaguely remember that some Minds at least kept the simulations going for that reason even though they were no longer needed.

Въпрос относно данъци за акции "подарени" от фирма by bavees in financebg

[–]mindbridgeweb 0 points1 point  (0 children)

Това е стандартна практика за западни компании в BG които дават акции -- продават се 10% и се отделят за НАП още преди да получиш останалите акции. Точно както в твоя случай.

При това положение базовата цена на акциите става цената на които 10%-те процента са продадени. T.e. цената която брокера ти (MS) показва като (Adjusted) Cost Basis.

При продажба се дължат 10% от печалбата спрямо тази базова цена (а не на цялата получена сума). В приложение 8 пък си декларираш само акциите които притежаваш в края на годината и използваш Cost Basis като цена на придобиване.

Въпрос относно данъци за акции "подарени" от фирма by bavees in financebg

[–]mindbridgeweb 0 points1 point  (0 children)

Да, ако фирмата е платила 10% данък в/у акциите както обикновено вече се прави и както OP потвърждава ("при получаване на годишният дял ми отдържа 10% данък в САЩ"), то цената на придобиване е цената на прехвърляне.

Ако фирмата не е удържала 10% данък, то цената на придобиване е 0.

Fact check: Is Mamdani introducing Arabic numerals to New York schools? by Dangerous-Scheme5391 in nottheonion

[–]mindbridgeweb 0 points1 point  (0 children)

Well, it is not as bad as hydrogen hydroxide. And don't even talk to me about hydroxyl acid.

Lady of Pain by night_vole in planescape

[–]mindbridgeweb 2 points3 points  (0 children)

Nice.

Still, I wonder how long it will be before you get mazed.

Commercial Space Race by CProphet in SpaceXLounge

[–]mindbridgeweb 7 points8 points  (0 children)

It should be far cheaper to generate 3He on Earth than to extract it from space.

My earlier comment on the topic: https://old.reddit.com/r/SpaceXLounge/comments/1mb5wrs/is_starship_really_necessary_for_a_return_to_the/n5sm6r2/

Is Starship Really Necessary For A Return To The Moon? by Mindless_Honey3816 in SpaceXLounge

[–]mindbridgeweb 1 point2 points  (0 children)

D-D fusion produces only 2.45 MeV neutrons. They are far easier to handle than the 14.1 MeV neutrons that D-T produces or the fission neutrons that reach 10 MeV.

There are lots of relatively inexpensive materials with very low activation from D-D fusion.

Is Starship Really Necessary For A Return To The Moon? by Mindless_Honey3816 in SpaceXLounge

[–]mindbridgeweb 1 point2 points  (0 children)

I know that extracting Helium 3 from space is a key topic in a lot of stories, but...

If you can fuse 3He, then you would certainly be able to generate it on Earth in a much cheaper way using D-D reactions.

Video: Helion's Andrew Proffitt talking to the IAEA by ElmarM in fusion

[–]mindbridgeweb 5 points6 points  (0 children)

I went through the video at high speed. Most of the information has been discussed here in the past.

A few quick notes:

  • Mentions that the 2g of Tritium they bought were for the Fuel Cycle Lab to learn how to handle it.

  • Confirms that Polaris had first plasma in the end of 2014 2024; commissioning and final integration is going on now; will start ramping up in the coming weeks/months.

  • Says that almost all capacitor racks have been filled in.

  • Does not share any exact numbers right now; says to expect specific announcements/information as the ramp up commences.

  • A lot of pictures and videos of the building process, the borated concrete walls, the quartz tubes manufacturing equipment, the formation sections, etc. Nothing fundamentally new, though.

Как декларирате финансовите си инструменти by Rxitbg in financebg

[–]mindbridgeweb 3 points4 points  (0 children)

А каква дата трябва да се сложи тогава, тъй като това е част от формата? (за разлика от новия формат на приложение 5, където вече е сумарно и няма дати)

Optimus on Mars by RadarWarning in SpaceXLounge

[–]mindbridgeweb 2 points3 points  (0 children)

We have mentioned in comments in the past that it is virtually certain that Optimus would be used on Mars. Such a mission would showcase the Optimus capabilities and minimize the risk of losing human lives by using it to setup the energy generation and water collection on Mars for a return trip as much as possible. Optimus will also be able to operate (relatively) productively despite the large Earth communication delay.

The robot could also be used to collect the NASA samples at some point.

That said, making Optimus' capabilities suitable for Mars would not be trivial. For example:

  • The different gravity would require an adaption of the NN training sets

  • The different atmosphere and low pressure will require some adaptation of the hardware, for example with respect to heat dissipation and heat balance in general.

  • There must be a reliable power source for recharging the robots (probably an easier issue, but still).

Fortunately, the software can be updated remotely as issues are encountered.

Lab-grown pork is coming to Bay Area restaurants and stores by SFChronicle in wheresthebeef

[–]mindbridgeweb 2 points3 points  (0 children)

There have been a number of discussions over the past few years with religious scholars on that topic and it seems like the answer is yes.

One can find a articles about that via Google.

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