gandalf_der_12te

looks better than the actual hatsune miku

no it’s a cosplay from the Neon Genesis Evangelion series. the boy’s shinji and the red one is … what’s her name? katsuragi? anyways she’s supposed to watch over him and is probably giving him a stern lecture rn.

not now dad

no joke you weren’t kidding

i’m still thinking about it. shinji hat it all, in the end. and then he went back. would you?

Image

https://en.wikipedia.org/wiki/Early_world_maps

i think there was a greek(?) guy who made a map of all known locations on earth in the 3rd century AD, and in the preamble he stated that the earth was a sphere, and he almost got the diameter correctly, he only estimated it to be 25% less than it actually is (same order of magnitude though).

1200 years later columbus read that stuff and thought “huh, okay, based on this diameter i can sail to india no problem”. even though it was known at the time that the diameter would have to be higher, columbus kinda willfully ignored it (wishful thinking). and got lucky.

diplomacy is made in the (bed-)sheets

the funny thing is that he didn’t. he stayed convinced that he arrived at india until he died.

another quality post. thanks

“People still love Pluto; they always have,” Sweitzer said. “Think of it this way. Let’s say you have a dozen cats at home, but one of them has always been kind of strange. It’s furry like a cat. It has four legs like a cat. But every so often it barks. But you just think, ‘Oh, that’s just strange Sparky. He’s a little off.’ Then one day you learn about dogs and all of a sudden you realize Sparky is actually not a cat at all-he’s a dog. That doesn’t change how much you love Sparky. And that is how it is with Pluto.”

whoa that’s charming :3

in fact, there are only glowing stars and non-glowing stars :)

fun fact: it’s also the only planet discovered by an american, which i suspect is why americans have such a big “pluto is a planet” movement - they’re proud of the only planet they discovered.

i’ve literally never heard anyone argue about whether pluto is a planet over here in europe. it’s just not an issue.

it’s kinda sad actually how one person can do so much damage (talking about mccarthy ofc)

yeah huh what

i remember reading an article about this but i can’t find it anymore

nvm you’re right

yeah i think the same thing. energy sources are critical infrastructure, like streets and housing. imagine if you had to drive 1000 km just to go from your house to your workplace. unimaginable

Hydrogen is difficult to work with, massive compression or cryogenic temperatures. Metal embrittlement is a long term concern.

that’s hearsay. there’s lots of studies about hydrogen pipeline / storage feasibility, such as the ones i’ve linked above. pls stop spreading misinformation.

electrolysis alone has 80% electric -> hydrogen conversion efficiency minimum, sometimes close to 100%. most solar panels have 20% sunlight -> electric efficiency. so total sunlight -> electric -> hydrogen efficiency is about 20% * 80% = 16%. which might not sound like a lot but remember there’s a ton of sunlight so wasting some doesn’t matter.

it’s more about the economic cost to describe how feasible something is.

well, technically, the term transformer refers to any device that converts the wave-form from one form to another. so a rectangle -> triangle converter would be a transformer.

in most cases, though, it’s only used in the sense of “voltage converter”. and these exist for AC and DC

nvm

yeah, AC won during the current wars in 1900, mostly because efficient transformers were only available for AC at the time.

nowadays DC is often used for high-power long-distance transport though.