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/sci/ - Science & Math

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6339362 No.6339362 [Reply] [Original]

How would wood be affected by long term exposure to space?

Teak planking, for example.

>> No.6339421

open space, near a star or inside a space station?

>> No.6339422

>>6339421
Open space.

>> No.6339432

all of its molecules would go flying off in every direction because of the pressure difference between system and environment

>> No.6339454

>>6339432
well that's just stupid

>>6339422
well if it is open space what will happen first is all of the water content (the majority of dried wood still has some moisture, as high as 30%) will freeze (and depending on initial conditions it will either freeze dry and the ice will be dissipated by sublimation or it will slowly freeze and bee trapped as crystal), depending on how close to a star (like if it was sitting outside our atmosphere) the bombardment of various radiations will cause various types of radiation damage, first the outer layer would begin to crack all over and swell, then the inside will follow suit, however eventually so many voids will form that it will partially petrify, and at that point it will stay static until the space dust eventually erodes down to a smoothed out cracked up stone (petrified wood) surface

>> No.6339462

>>6339454
I think the water would probably boil before it freezes

>> No.6339495

nope, and despite common misconceptions neither would your blood, due to the elastic nature of blood vessels (which won't allow it to turn to stream even at room temp) coupled with the fact that you would freeze nearly instantaneously (people tend not to realize how cold -271 really is) which wouldn't allow for the water on your body to turn to stream because of the low pressure

if you don't believe me, look at a steam table at anything below -200 (it technically will be an ice table but they still call it that because of consistency) you will see that while at room temp water is steam at 0 psi, but when you drop temp it will drop down to liquid then solid despite presure

>> No.6339505
File: 57 KB, 750x512, phase[1].gif [View same] [iqdb] [saucenao] [google]
6339505

>>6339462
Look at a phase diagram of water. It will freeze.
Actually, pic related is not a good in this situation. Because of the rapid temperature decrease, the water will form amorphous ice, not ice XI.
http://en.wikipedia.org/wiki/Amorphous_solid_water
This is the form practically all space water takes.

>> No.6339521

>>6339505
>>6339495
Thermal radiation takes time, nothing freezes instantly in space

>> No.6339526

>>6339521
And actually, if you're at around Earth's distance from the sun, you'd gain more radiation than you give off.

>> No.6339527

>>6339495
>you would freeze nearly instantaneously
ITT dumb fucks who don't know how a vacuum works.

>> No.6339529

>>6339521
^This

You DON'T instantaneously freeze in space, and you don't inflate and explode because of pressure difference.

>> No.6339545

>>6339505

You would initially boil, but you would have evaporative cooling on the wood/remaining water causing it to freeze. Over time, it would go through sublimation.

>> No.6339566

>>6339505
the water stays at 300 K because there's nothing to give heat away to.

>> No.6339647

>>6339566
no, you wouldn't be able to lose heat via conduction and connection, you would still be able to lose heat via radiation

>> No.6339649

>>6339647
how much?