batteries haven’t been built in the past because they weren’t needed, but they’re being built today (look up sodium-ion batteries) and they’re cheap and effective.

btw the reason why denmark and germany are building so many wind turbines is mostly because they’re so far north.

see my other reply in this thread

basically it doesn’t move the moon closer, but it makes the Earth rotate slower. that’s where the energy comes from.

basically the tides transfer angular momentum from the Earth to the moon.

actually, the moon gains angular momentum from the tidal movement that it causes, and that’s what makes it move further away. the reason is that it takes Earth about 1 day to rotate once around its axis, but it takes the moon 28 days to rotate once around Earth’s axis. so Earth has a higher angular velocity, and the tidal movement tries to reduce that difference to make the two tidally locked eventually. ironically, this process transfers angular momentum to the moon (to speed it up), which makes it move further away and thus the angular velocity actually decreases. yeah, orbital mechanics is weird.

(btw this is not a joke. it’s really that way, difficult to comprehend i know).

btw geothermal does not come from the earth’s rotation. it mostly comes from nuclear decay of heavy isotopes in the earth’s interior and the enormous heat capacity of the earth’s interior, which means it’s still warm from the friction heat from when the planet first formed. in other words it’s there since the Earth formed, independent of the sun.

also there’s another (practically accessible) form of energy that comes neither from geothermal nor from the sun: you can pull energy out of the tidal movement that comes from the moon’s changing gravity field as it orbits around our planet. i think that one’s not really being used though because the only way to really utilize it is to build dams across havens and important shipping routes and that interferes with trade, which is considered the more economically valuable activity from the two.

well actually there’s renewable energy on the cosmological scale (look up E. Harris - Mining Energy In An Expanding Universe), at least theoretically. nobody’s ever practically utilized it (afaik).

they’re more economically efficient than nuclear, which means they give you more bang for the buck

pretty sure it comes from latin “inter-lego” (collect or pick out information, like you would pick out the good fruit from a bush with good and bad fruit).

https://en.wiktionary.org/wiki/intelligent

so it’s about filtering what you want to have from what you don’t want to have. i.e. a mathematical function f : X -> R which maps an object x to a real number to figure out how desirable that object is, i.e. assign value to it.

technically you don’t even need neural networks for it, sorting algorithms employ this kind of function all the time to sort objects according to some criteria.

i evolved

yeah everyone knows this

you fell for the “move to the countryside” incentive. they give you money to move in the middle of nowhere, then you pay for that circumstance for the rest of your life with poor transportation, no jobs, expensive maintenance etc.

also you went into farming while also having severe physical health issues?? really?

we also have science memes, showerthoughts and comic strips though!

following people is nice if you know these people personally, like from real life.

to block all the politics communities should be an option at sign-up, or better yet, even when you browse without being signed in.

i’m not gonna do it alone

it actually takes more energy to launch stuff into the sun, than to launch it out of the solar system. just saying.

so who is this for?

for myself, for example. i want to see more diverse content.

1. block all news

2. post stuff about things that you care about? gardening? horses? wildlife photography?

just block all “US politics” communities and downvote every single post that mentions trump (or the democratic alternative candidate) that appears outside of those comms.

i think we need better federation with mastodon. at least, mastodon users should be able to see lemmy content and interact with it. (i can understand that the reverse, i.e. seeing mastodon content from lemmy is technically challenging)

that would give more exposure and interaction.

also not federating with mastodon would mean to break the promise of the fediverse, that it’s all (somewhat) compatible.