gandalf_der_12te @ gandalf_der_12te @discuss.tchncs.de

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2 yr. ago

I suspect it's because the hydrogen molecules are bigger than a single helium atom, which doesn't form molecules (since it's a noble gas).

So the hydrogen molecule only seeps through if it's oriented right (since the hydrogen molecule is a stick-shaped molecule).

Yeah, if by "going over", you mean accelerating in the horizontal direction, then you're right.

Just to illustrate this: Consider we want to put 1 kg of mass into orbit.

First, we have to raise it by 100 km. That requires 1e6 J = 1 MJ of energy (formula is mgh).

Then, we have to accelerate it sideways, to a speed of 8 km/s. The energy to do that is 32 MJ (formula is ½mv²).

So, most of the energy (97%) is actually in the sideways movement.

While what you said is true,

i guess that most people's motivation is rather the economic benefits. Think of it this way:

The 1960s space race created jobs all across the US and inspired a generation of scientists.

Mars settlement could do the same, but bigger. At least that's the idea.

a rocket is a wingless airplane IMO

Edit: with oxygen tanks, as you said.

i wonder, what do you, personally, think of slashing ice's car's tires? Do you think it's too violent, or is it just right?

the idea behind it is to "not let them get away with it".

I.e., when ice shows up in a place to disappear citizens, instead of driving away with these people, they get stuck because they can't drive away. This way, they don't get away with it.

Israel is the criminal and everyone knows it.

Israel will face the long-term consequences of its reckless behavior. Just not today.

Imagine Iran did a "preventive strike" against Israel because they might have nuclear bombs.

other problems make for a great distraction from the original problem. i suspect that's the reason behind a lot of trump's actions

But the question is – why?

My honest belief is that somehow, spaceflight is good for the people in the US because it creates jobs:

Think of how the Space Race of the 1960s brought jobs all across America. On top of that, it inspired a generation of scientists.

Both are valuable for a society, especially for the US, where these kinds of jobs are especially desirable.

That's why the launching areas are typically huge areals where not many people live. On top of that, rockets are typically launched eastwards (due to earth's rotation) and in coastal areas, so they fly the first few minutes over the ocean. Should something blow up, it does so over the sea, where it doesn't matter too much.

that's where ride-sharing could come in.

WTF is up with 40?

People have names.

I suppose that a counterexample to this might be Tibetan children, who get named at puberty, IIRC. Before that, they have no names. They are just referred to as "child" or "somebody's child".

People’s names are all mapped in Unicode code points.

I suppose a counterexample to that might be cultures which do not use script in general. Then, obviously, there's no Unicode characters for these non-existant glyphs.

That's the neat part: they don't!

I don't know who that is, but that might actually check out. I have a bookshelf full of books that i looved as a teenager :D i just keep them for the memories of enjoying them:P

I'm just glad that renewable energy will make us independent from middle eastern oil eventually. maybe then the bloodshed can end.

not all south americans want to go into the US ...

i think you think that telephone numbers are well-structured. they are not. they are messy. they do not fit a certain schematic.

I recommend also the following topic: "people have names". https://www.kalzumeus.com/2010/06/17/falsehoods-programmers-believe-about-names/

Names do not in general fit into the schematic "first name, last name"

thanks!

oha dankeschön .