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Lets say you have a giant straw..

F

Flammable

Platinum Member
When i say giant straw i mean one that can reach space. If you manage to get one and bring it up into space, would we lose all the air in our world?
 
Originally posted by: Xylitol
Originally posted by: spidey07
No, the air is here because of gravity.
Click to expand...

But there's so much emptiness outside of the straw that the vacuum would suck the air right out no?
Click to expand...

again, the vacuum isn't strong enough to overcome gravity, if it was we would be here right now
 
Originally posted by: Xylitol
Originally posted by: spidey07
No, the air is here because of gravity.
Click to expand...

But there's so much emptiness outside of the straw that the vacuum would suck the air right out no?
Click to expand...

The straw would hold a column of air, just like is above you right now, with a density decreasing with height until it effectively reaches zero. It wouldn't suck any air to anywhere.
 
Originally posted by: Flammable
When i say giant straw i mean one that can reach space. If you manage to get one and bring it up into space, would we lose all the air in our world?
Click to expand...

I'm not sure if this thread has the potential of plane on treadmill
 
Originally posted by: 3chordcharlie
Originally posted by: Xylitol
Originally posted by: spidey07
No, the air is here because of gravity.
Click to expand...

But there's so much emptiness outside of the straw that the vacuum would suck the air right out no?
Click to expand...

The straw would hold a column of air, just like is above you right now, with a density decreasing with height until it effectively reaches zero. It wouldn't suck any air to anywhere.
Click to expand...

And it'd have a weight/ of about 1 atmosphere.
 
Originally posted by: spidey07
Originally posted by: 3chordcharlie
Originally posted by: Xylitol
Originally posted by: spidey07
No, the air is here because of gravity.
Click to expand...

But there's so much emptiness outside of the straw that the vacuum would suck the air right out no?
Click to expand...

The straw would hold a column of air, just like is above you right now, with a density decreasing with height until it effectively reaches zero. It wouldn't suck any air to anywhere.
Click to expand...

And it'd have a weight/ of about 1 atmosphere.
Click to expand...
Yup, we could probably even calculate the power of the required mechanical vaccuum to reduce the atmosphere on earth to any specific density, assuming a 'dump' at the end of the straw.
 
Here, if god has a milkshake, and I have a milkshake, and I have a straw. There it is, that's a straw, you see? You watching?. And my straw reaches acroooooooss the universe, and starts to drink god's milkshake... I... drink... gods... milkshake!
[sucking sound]

KT
 
Originally posted by: Flammable
When i say giant straw i mean one that can reach space. If you manage to get one and bring it up into space, would we lose all the air in our world?
Click to expand...

No, but I would drink your milkshake.
 
Originally posted by: KeithTalent
Here, if god has a milkshake, and I have a milkshake, and I have a straw. There it is, that's a straw, you see? You watching?. And my straw reaches acroooooooss the universe, and starts to drink god's milkshake... I... drink... gods... milkshake!
[sucking sound]

KT
Click to expand...

so it has brought the boy(s) to the yard, eh?

+
 
You remind me of a buddy I had back in hs. He was convinced that anything entering Earth's atmosphere would burn up regardless of it's speed. I got him to actually state that a tennis ball falling to earth at a controlled 1ft/sec rate would burn up.
 
I think a better question is if you ran a straw from earth to a higher gravity place, like jupiter, then pumped air from earth for a good bit, could you create a siphon that would do the rest of the work?
 
I don't think you actually understand what "suction" is.

Fluids flow not because something is pulling them, but rather, because something is pushing them. They move from high pressure to low pressure. "Suction" is simply creating a low pressure on one end so that the high pressure can push from the other end. For example, it doesn't matter how strong of a "suction" you have, there's a limit to the height that you can "pull" water up a column. Barometers function on this principle.
 
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