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Bullets In Space

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Celebaelin
91749.  Thu Sep 07, 2006 6:12 pm Reply with quote

djgordy wrote:
Celebaelin wrote:
I think the explosion that's supposed to propel the bullet wouldn't happen because there's no oxygen.


That is incorrect. Modern bullets contain their own oxidiser so the explosion that propels the bullet will still happen even in the absence of free oxygen. When the bullet is fired it will just travel forever in a straight line until it hits something or encounters a gravity field strong enough to slow it down.

*Sniff*
But in the episode of Firefly (on which the excellent film Serenity is based) Our Mrs Reynolds Jayne cannot fire Vera (his favourite gun) without atmosphere (so he put her in her own spacesuit and shoots through the visor).

It was in Firefly so it must be true.

Quote:
According to Jayne, "Vera" needs oxygen around her to fire, actually an incorrect statement; gunpowder incorporates both fuel and oxidizer and will combust regardless of the presence or absence of atmosphere. According to the DVD commentary, the episode's producers checked this with a gun expert, but were incorrectly informed.

http://en.wikipedia.org/wiki/Our_Mrs._Reynolds_(Firefly_episode)

Vera does however have the distintion of being a "Callahan full-bore, auto-lock, customized trigger, double-cartridge thorough-gauge" weapon so who knows how that affects oxygen requirements.

 
Davini994
91755.  Thu Sep 07, 2006 6:34 pm Reply with quote

15 answers in 2 hours? What is this, happy 2 ho... oh never mind.

So do biros work in space or not then?

 
Celebaelin
91756.  Thu Sep 07, 2006 6:35 pm Reply with quote

Yes.

Because there is no gravity to have to work against (assuming it's warm enough that the ink will still flow).

 
Tas
91798.  Fri Sep 08, 2006 4:47 am Reply with quote

That was more than a tad surreal....and got me giggling on a boring, work-strewn Friday morn.

:-)

Tas

 
Southpaw
91824.  Fri Sep 08, 2006 7:04 am Reply with quote

They could just use mechanical pencils and avoid the whole sharpening minefield, of course.

 
Tas
91848.  Fri Sep 08, 2006 8:31 am Reply with quote

Until the graphite snaps and you have to push the end to feed out more. The little snapped off bit will play havoc in the same way as pencil tips and shavings from sharpeners.

:-)

Tas

 
Feroluce
91859.  Fri Sep 08, 2006 8:49 am Reply with quote

Ordinary Bic Biros work in zero gravity, most pens will.

The super duper space pen is different from normal pens because it will work in a vacuum, it isn't dependant on air pressure for capilliary action.

Why on earth anyone would need a pen that works in a vacuum is beyond me.

 
Ameena
91862.  Fri Sep 08, 2006 8:53 am Reply with quote

Well, perhaps "on Earth" is the operative term there ;).

 
cabs
91865.  Fri Sep 08, 2006 8:56 am Reply with quote

Feroluce wrote:
Ordinary Bic Biros work in zero gravity, most pens will.

The super duper space pen is different from normal pens because it will work in a vacuum, it isn't dependant on air pressure for capilliary action.

Why on earth anyone would need a pen that works in a vacuum is beyond me.


What if you accidentally got sucked into a giant hoover and you wanted to write a note for someone to secure your release?

Ah, Friday. Day of nonsense.

 
Tas
91878.  Fri Sep 08, 2006 9:17 am Reply with quote

Quote:
What if you accidentally got sucked into a giant hoover and you wanted to write a note for someone to secure your release?


But you'd never get the note out....too much suction, keeping you in!

:-)

Tas

 
cabs
91882.  Fri Sep 08, 2006 9:22 am Reply with quote

If it was a clear Dyson or similar you could hold it up to the plastic.

So there.

 
Neotenic
91888.  Fri Sep 08, 2006 9:29 am Reply with quote

...but if it was a clear Dyson then surely those on the outside could actually see you in there - so why would you need to write a note?

 
Tas
91890.  Fri Sep 08, 2006 9:31 am Reply with quote

Besides, there'd be loads of dust in there, so it would not be clear!

:-)

Tas

 
cabs
91891.  Fri Sep 08, 2006 9:33 am Reply with quote

I had thought about that. They might think you were just messing around, rather than really serious about escaping from hoover hell.

 
Amie
91893.  Fri Sep 08, 2006 9:34 am Reply with quote

Quote:
so why would you need to write a note?


Perhaps said people on the outside could be rather stupid and assume that you actually want to be inside the Dyson.. having a private party or something.. it could happen..

EDIT Damn, I should really learn to type faster.


Last edited by Amie on Fri Sep 08, 2006 9:35 am; edited 1 time in total

 

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