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[Twinwolf]

Oh, I think I read the formula wrong. I thought it was (50 + STR)*10, but it was 50 + (STR*10). Editing.

[Stirk]

You made a double post on the thread page, buddy. Might wanna lock one.

NM, Stirk has finally lost his last semblance of sanity and is seeing things.

Oh, you just changed the name! There is a little lock button in the corner you can click if you don't want anyone posting on it.

[Sosoku234]

I know.

[Culise]

Fun thing I thought of as well: we'll also need to worry about cold welding.  Basically, if you put two pieces of the same or similar metals together in a vacuum with a relatively clean contact area, they'll strongly adhere to each other.  In other words, many guns, engines, metal doors, hinges, and the like will have spontaneously welded themselves into single lumps of metal.  We can expect some interesting times just trying to get into places, if nothing else. ^_^

[Stirk]

Fun thing I thought of as well: we'll also need to worry about cold welding.  Basically, if you put two pieces of the same or similar metals together in a vacuum with a relatively clean contact area, they'll strongly adhere to each other.  In other words, many guns, engines, metal doors, hinges, and the like will have spontaneously welded themselves into single lumps of metal.  We can expect some interesting times just trying to get into places, if nothing else. ^_^

Dunno, the insides of guns/engines and other mechanical things are usually super-dirty if they where at all used. Even if they are brand-spanking new, they have oil and such on all the important moving parts to help them, well, move. I don't know enough about cold welding to say one way or the other though :-/.

[Culise]

Fun thing I thought of as well: we'll also need to worry about cold welding.  Basically, if you put two pieces of the same or similar metals together in a vacuum with a relatively clean contact area, they'll strongly adhere to each other.  In other words, many guns, engines, metal doors, hinges, and the like will have spontaneously welded themselves into single lumps of metal.  We can expect some interesting times just trying to get into places, if nothing else. ^_^

Dunno, the insides of guns/engines and other mechanical things are usually super-dirty if they where at all used. Even if they are brand-spanking new, they have oil and such on all the important moving parts to help them, well, move. I don't know enough about cold welding to say one way or the other though :-/.

I suspect that if the inside of your gun/engine is so dirty inside the seals themselves that it won't vacuum-weld itself, it's so dirty it won't work for more conventional reasons.  ^_^

[Stirk]

Fun thing I thought of as well: we'll also need to worry about cold welding.  Basically, if you put two pieces of the same or similar metals together in a vacuum with a relatively clean contact area, they'll strongly adhere to each other.  In other words, many guns, engines, metal doors, hinges, and the like will have spontaneously welded themselves into single lumps of metal.  We can expect some interesting times just trying to get into places, if nothing else. ^_^

Dunno, the insides of guns/engines and other mechanical things are usually super-dirty if they where at all used. Even if they are brand-spanking new, they have oil and such on all the important moving parts to help them, well, move. I don't know enough about cold welding to say one way or the other though :-/.

I suspect that if the inside of your gun/engine is so dirty inside the seals themselves that it won't vacuum-weld itself, it's so dirty it won't work for more conventional reasons.  ^_^

Not that it seals itself . A layer of dirt/grime/paint/coating prevents vacuum welding, like you said the surface has to be "relatively clean". I've seen lots of dirty guns, and cars look pretty dirty too. At the very least, it is a problem our mechanically inclined characters can fix fairly easily if it comes up.

*EDIT*

Looking it up, it appears that the protective oxide layer would remain until it is damaged by scratching/friction/etc. So they wouldn't brick until they got used a bit, which gives us plenty of time to modify them not to brick at all.

[Culise]

I wonder how effective any fix could be, if we end up in a situation it happens.  Vacuum welding happens because, to borrow from Feynman, atoms literally can't "tell" which sheet of metal they belong to; they end up as one big lump of metal.  To fix it, you'd either need to replace the metal parts and/or cut them apart again with a saw or the like - in effect, recreate them from scratch.  For hinges, that's easy to bypass, albeit not to fix; lop them off, and the door easily opens.  For the inside of a gun...probably not so much. 

[Stirk]

I wonder how effective any fix could be, if we end up in a situation it happens.  Vacuum welding happens because, to borrow from Feynman, atoms literally can't "tell" which sheet of metal they belong to; they end up as one big lump of metal.  To fix it, you'd either need to replace the metal parts and/or cut them apart again with a saw or the like - in effect, recreate them from scratch.  For hinges, that's easy; lop them off, and the door easily opens.  For the inside of a gun...probably not so much.

Like I ninja edited in, I believe that the protective oxide coating would remain until actively removed, preventing anything from being bricked unless someone was messing with it.

As for the fix, wouldn't it just be like someone welding everything together? Just cut the pieces that are stuck together, do some modifying to make them work right again, and finished!

*Editing in Source (A research paper detailing the issue). It basically talks about how the layer has to be removed for this to be a problem. On static items like engines and weapons on Earth's surface, they would have to be used/bumped around to remove the layer. Otherwise we should be safe.

**DOUBLE SUPER EDIT!**

Looking at it even more, it isn't *actual* welding. The adhesion forces shown from impact are generally under a single newton. While this is enough to halt springs and such, it is something that can easily be moved by the human hand. The paper mentions that grease does successfully block its effects, I think. "Fretting" could theoretically raise the adhesion force to ~10N, which still isn't enough to stop humans from dealing with it.

Recap:

Metal objects keep their protective oxide layer until it is removed by force, so guns and cars sitting in place are still usable. Assuming they are used and remove that protective layer, the adhesion forces that join them together will *probably* make them unusable, but they can easily be fixed by the human hand, and a coating can prevent this from happening altogether.

[Stirk]

....What in the world are we gonna do with blood thinner? The sedative and gummys are useful, but blood thinner is just gonna kill us faster in most cases .

[Sosoku234]

You never know. It can always help in some way shape or form.

[Culise]

Problem is we don't have anyone likely to know enough medicine to use it (especially given how tricky getting the dosage right can be), but anticoagulants should help with heart attacks and strokes.  We're a little young for it, but we may run into someone who could use some.

[Stirk]

Problem is we don't have anyone likely to know enough medicine to use it (especially given how tricky getting the dosage right can be), but anticoagulants should help with heart attacks and strokes.  We're a little young for it, but we may run into someone who could use some.

While it would make a useful trade product if we come across an elderly friendly, I mainly asked because he *might* have meant to give us somewhat similar nitroglycerin pills we could make into explosives, rather than an actual anticoagulant.

[Sosoku234]

Nope. But, that would have been cool.

[Sosoku234]

More or less, you'll find a way to use them without being able to use them for medicinal purpose.