Would it suck?

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Would it suck?

Postby Crescent Pulsar S » Mon Mar 14, 2016 10:05 pm

If, say, you created a portal within an atmosphere (like Earth's, let's say), and the other side is space. If the atmosphere is drawn into space, at what kind of rate would that happen, and what would the physical effect be? Would someone standing near it feel a breeze as the atmosphere moves to the portal, or might they be sucked through the portal as well?
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Re: Would it suck?

Postby Knight of L-sama » Tue Mar 15, 2016 3:39 am

It would indeed suck. The short version is that air wants to flow from an areas of high pressure to low pressure. (This is one of the causes of wind on earth) And space is very, very low pressure. The exact speed and force of the resultant wind is going to vary somewhat depending on local atmospheric pressure (it's going to be worse at Death Valley or the shores of the Dead Sea than high in the Andes or the Himalayas) and the exact size of the portal. But for a sufficiently large portal... you'd probably be looking at wind speeds normally reserved for cyclones, hurricanes and tornadoes.

Knock you off your feet and suck you through... possible.
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Re: Would it suck?

Postby Spica75 » Wed Mar 16, 2016 5:04 am

Pretty much what Knight said yeah.

Scale is going to matter a lot for just how big effect you get, even a small portal will have a high flowrate per se, even if it can´t affect its surroundings as noticeably.

According to this:
http://www.tlv.com/global/TI/calculator ... ifice.html
You get a flow of 148 cubic metres per minute through a 10 cm opening. ( simplified )
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Re: Would it suck?

Postby Té Rowan » Wed Mar 16, 2016 8:16 am

All of which assumes the portal is a plain doorway with no shielding or barriers.
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Re: Would it suck?

Postby Cheb » Mon Jun 06, 2016 9:42 am

The atmospheric pressure is one kilogram per square centimeter. It's *ten tons* per square meter. If the portal is big enough, its roaring might would be sucking cars in by crushing them to fit through. If the portal is small enough and someone comes close, they would be squeezed through it like paste.

On the contrary, you *can* plug an one-millimeter hole with your finger without consequences (0.1 * 0.1 * 1kg = 10 grams of force)

P.S. Remember yer childhood. Calculate this for an average cathode ray tube TV screen (hint: it's a couple tons). Shit brix.

P.P.S. I saw once someone mishandling a half-disassembled old TV. The guy hit the wall with the tail of the tube while moving the thing. It broke and the (light, fragile) electron gun assembly was sucked in with such a force it tore the shadow mask and pitted the screen from inside leaving a shattered pockmark. That's two centimeters of highly impact-resistant crystal glass.

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