Weird question about Mars...

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brandbll

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<p>I think i've asked this first question before, but i searched for it and couldn't find it.&nbsp; Let's say we had a spacecraft with humans on the warmest part of Mars from which i read on wiki gets up to about 70 degrees f.&nbsp; If you wanted to, could you just run outside while holding your breath and then run back inside to get your breath without experiencing any real damaging effects?&nbsp; </p><p>My second question is, what would climate feel like on Mars on the human skin.&nbsp; If it was 68 degrees, would it feel like 68 degrees or would it feel hotter or warmer.&nbsp; For instance, in Minnesota, when it's 80 degrees with a very high humidity, it feels much hotter than what it actually is.&nbsp; So am i right in assuming a 70 degree temp on Mars would feel much colder than just a regular 70 degree day here on Earth? </p> <div class="Discussion_UserSignature"> <p><font size="3">You wanna talk some jive? I'll talk some jive. I'll talk some jive like you've never heard!</font></p> </div>
 
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vogon13

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<p>&nbsp;</p><p>The sudden pressure drop will be very unpleasant</p><p>&nbsp;</p><p>You're ears will pop, and 'the mother of all farts' will emerge from your nether regions.</p><p>&nbsp;</p><p>Moisture evaporating from your skin will immediately start cooling you dramatically, regardless of ambient temp. </p><p>&nbsp;</p><p>Fatal embolism/bends/anoxia will immobilize you very quickly.</p><p>&nbsp;</p><p>Not sure what would kill you first, but it would be painful in the extreme. </p><p>&nbsp;</p><p>&nbsp;</p><p>{if you try this, let me know how close I go this}</p><p>&nbsp;</p><p>&nbsp;</p><p>&nbsp;</p> <div class="Discussion_UserSignature"> <p><font color="#ff0000"><strong>TPTB went to Dallas and all I got was Plucked !!</strong></font></p><p><font color="#339966"><strong>So many people, so few recipes !!</strong></font></p><p><font color="#0000ff"><strong>Let's clean up this stinkhole !!</strong></font> </p> </div>
 
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oscar1

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<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>&nbsp;The sudden pressure drop will be very unpleasant&nbsp;You're ears will pop, and 'the mother of all farts' will emerge from your nether regions.&nbsp;Moisture evaporating from your skin will immediately start cooling you dramatically, regardless of ambient temp. &nbsp;Fatal embolism/bends/anoxia will immobilize you very quickly.&nbsp;Not sure what would kill you first, but it would be painful in the extreme. &nbsp;&nbsp;{if you try this, let me know how close I go this}&nbsp;&nbsp;&nbsp; <br />Posted by vogon13</DIV></p><p>I don't think it would be painful, for you'd fall into deep sleep fast as a result of the low pressure.<br /></p>
 
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brandbll

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Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>I don't think it would be painful, for you'd fall into deep sleep fast as a result of the low pressure. <br />Posted by oscar1</DIV><br /><br />So you'd decompress.&nbsp; Well, that answers that question.&nbsp; What a disppointment... <div class="Discussion_UserSignature"> <p><font size="3">You wanna talk some jive? I'll talk some jive. I'll talk some jive like you've never heard!</font></p> </div>
 
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kelvinzero

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<p>has this been on your todo list for a while? :)</p><p>Still I wonder how long you could&nbsp;stay alive and concious&nbsp;if your blood was purged of any gasses that cause the bends, and oxygen was released by some implanted device into the blood where it would circulate around the body before reaching the lungs; perhaps into&nbsp;the left heart.</p>
 
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brandbll

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Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>has this been on your todo list for a while? :)Still I wonder how long you could&nbsp;stay alive and concious&nbsp;if your blood was purged of any gasses that cause the bends, and oxygen was released by some implanted device into the blood where it would circulate around the body before reaching the lungs; perhaps into&nbsp;the left heart. <br />Posted by kelvinzero</DIV><br /><br />My genes are so superior that i could probably pull it off... <div class="Discussion_UserSignature"> <p><font size="3">You wanna talk some jive? I'll talk some jive. I'll talk some jive like you've never heard!</font></p> </div>
 
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michaelmozina

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<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>&nbsp;The sudden pressure drop will be very unpleasant&nbsp;You're ears will pop, and 'the mother of all farts' will emerge from your nether regions.&nbsp;Moisture evaporating from your skin will immediately start cooling you dramatically, regardless of ambient temp. &nbsp;Fatal embolism/bends/anoxia will immobilize you very quickly.&nbsp;Not sure what would kill you first, but it would be painful in the extreme. &nbsp;&nbsp;{if you try this, let me know how close I go this}&nbsp;&nbsp;&nbsp; <br /> Posted by vogon13</DIV></p><p>LOL! :) &nbsp; </p> <div class="Discussion_UserSignature"> It seems to be a natural consequence of our points of view to assume that the whole of space is filled with electrons and flying electric ions of all kinds. - Kristian Birkeland </div>
 
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silylene old

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<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>I think i've asked this first question before, but i searched for it and couldn't find it.&nbsp; Let's say we had a spacecraft with humans on the warmest part of Mars from which i read on wiki gets up to about 70 degrees f.&nbsp;<font color="#ff0000"><strong> If you wanted to, could you just run outside while holding your breath and then run back inside to get your breath without experiencing any real damaging effects?</strong></font>&nbsp; My second question is, what would climate feel like on Mars on the human skin.&nbsp; If it was 68 degrees, would it feel like 68 degrees or would it feel hotter or warmer.&nbsp; For instance, in Minnesota, when it's 80 degrees with a very high humidity, it feels much hotter than what it actually is.&nbsp; So am i right in assuming a 70 degree temp on Mars would feel much colder than just a regular 70 degree day here on Earth? <br />Posted by brandbll</DIV><br /><br />Actually you would have to <strong>exhale </strong>your breath before going outside.&nbsp; If you tried to hold a lungful of air, and then went outside, the pressure change could damage your lungs.</p><p>I imagine you could remain conscious for about as long as you could hold your breath in an exhaled condition.&nbsp; Maybe 30 seconds if you are in good shape.&nbsp;&nbsp; The air would feel like a dry warm day on Mt Everest - if Mt Everest could ever warm up!&nbsp; [Air pressure on Mt Everest = 0.29 atmospheres,&nbsp;&nbsp; The air pressure at the bottom of Hellas on Mars (lowest point) is about 0.012 atmospheres, which is barely high enough that water could exist as a liquid.]&nbsp;&nbsp; As others have commented, the low air pressure could cause embolisms and the 'bends'.&nbsp; I think that repeated exposure to this low a pressure could lead to brain and organ damage from bubbles in the veins.</p> <div class="Discussion_UserSignature"> <div class="Discussion_UserSignature" align="center"><em><font color="#0000ff">- - - - - - - - - - - - - - - - - - - - - -</font></em> </div><div class="Discussion_UserSignature" align="center"><font color="#0000ff"><em>I really, really, really miss the "first unread post" function.</em></font> </div> </div>
 
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JonClarke

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<p>Greg Benford has a scene in <em>The Martin Race</em> where a character has to run back&nbsp; to the hab from a deflating greenhouse.</p><p>Jon</p> <div class="Discussion_UserSignature"> <p><em>Whether we become a multi-planet species with unlimited horizons, or are forever confined to Earth will be decided in the twenty-first century amid the vast plains, rugged canyons and lofty mountains of Mars</em>  Arthur Clarke</p> </div>
 
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brandbll

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Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>Greg Benford has a scene in The Martin Race where a character has to run back&nbsp; to the hab from a deflating greenhouse.Jon <br />Posted by jonclarke</DIV><br /><br />If he had the types of genes i had he could have just walked... <div class="Discussion_UserSignature"> <p><font size="3">You wanna talk some jive? I'll talk some jive. I'll talk some jive like you've never heard!</font></p> </div>
 
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MeteorWayne

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<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>by brandbll</DIV></p><p>BTW, wierd is spelled weird :)<br /></p> <div class="Discussion_UserSignature"> <p><font color="#000080"><em><font color="#000000">But the Krell forgot one thing John. Monsters. Monsters from the Id.</font></em> </font></p><p><font color="#000080">I really, really, really, really miss the "first unread post" function</font><font color="#000080"> </font></p> </div>
 
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brandbll

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Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>BTW, wierd is spelled weird :) <br />Posted by MeteorWayne</DIV><br /><br />THAT is really weird, because that is how i have been spelling it forever.&nbsp; I must have just never noticed it because it automatically changes on Word(usually where i catch my spelling mishaps.&nbsp; "I before E except after C" what a load of bolognia!&nbsp; I'm just going to cut that word out of my vocab and start using 'strange'... <div class="Discussion_UserSignature"> <p><font size="3">You wanna talk some jive? I'll talk some jive. I'll talk some jive like you've never heard!</font></p> </div>
 
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vogon13

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<p>&nbsp;</p><p>At the risk of being indelicate, in the case of a sudden exposure to ambient Martian conditions, I suspect the flatus problem will be quite painful.</p><p>&nbsp;</p><p>In hydraulics and pneumatics, flow rate across an orifice is proportional to the pressure difference.&nbsp; On earth, I suspect even a 1psi increase over ambient would be very unusual (Roseanne??&nbsp; Limbaugh??).&nbsp; On Mars, the flow rate would be essentially the same as 'venting' into vacuum.&nbsp; The 'venturi' effect might accelerate the flow to near sonic velocity !!</p><p>&nbsp;</p><p>The sudden pressure drop on the escaping gases might also induce condensation for the entrained moisture.&nbsp; The possibility of flash freezing is a possibility too.</p><p>&nbsp;</p><p>The abrasive properties of solid ice crystals accelerated to near sonic velocity in close proximity to such delicate tissues is too dreadful to contemplate.</p><p>&nbsp;</p><p>&nbsp;</p><p>&nbsp;</p><p>&nbsp;</p><p>&nbsp;</p> <div class="Discussion_UserSignature"> <p><font color="#ff0000"><strong>TPTB went to Dallas and all I got was Plucked !!</strong></font></p><p><font color="#339966"><strong>So many people, so few recipes !!</strong></font></p><p><font color="#0000ff"><strong>Let's clean up this stinkhole !!</strong></font> </p> </div>
 
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Doc_Grey

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Actually, your rectum might just prolapse as well (ow!) don't even wanna think what it would do to your eyes and inner ears
 
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vogon13

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<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>Actually, your rectum might just prolapse as well (ow!) don't even wanna think what it would do to your eyes and inner ears <br /> Posted by Doc_Grey</DIV></p><p>&nbsp;</p><p>Ewww.</p><p>&nbsp;</p><p>I am thinking certain menu items the night before might be strongly contra-indicated. </p><p>&nbsp;</p><p>Sauerkraut and baked bean pizza for starters.</p><p>&nbsp;</p><p>&nbsp;</p><p>&nbsp;</p><p>&nbsp;</p> <div class="Discussion_UserSignature"> <p><font color="#ff0000"><strong>TPTB went to Dallas and all I got was Plucked !!</strong></font></p><p><font color="#339966"><strong>So many people, so few recipes !!</strong></font></p><p><font color="#0000ff"><strong>Let's clean up this stinkhole !!</strong></font> </p> </div>
 
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kelvinzero

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<p>I didnt title my link before but it is a description from a NASA site. They describe about the only instance of someone exposed to 'vacuum'. Actually about mars pressure in fact.</p>
 
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michaelmozina

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<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>I didnt title my link before but it is a description from a NASA site. They describe about the only instance of someone exposed to 'vacuum'. Actually about mars pressure in fact. <br /> Posted by kelvinzero</DIV></p><p>It is interesting that short exposure to extremely low pressure (assuming one doesn't hold their breath) isn't all that destructive, anymore than the destruction of being oxygen deprived in any scenario one might encounter on Earth.&nbsp;&nbsp; Thanks for the link. </p> <div class="Discussion_UserSignature"> It seems to be a natural consequence of our points of view to assume that the whole of space is filled with electrons and flying electric ions of all kinds. - Kristian Birkeland </div>
 
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crazyeddie

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<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>&nbsp;The sudden pressure drop will be very unpleasant&nbsp;You're ears will pop, and 'the mother of all farts' will emerge from your nether regions.&nbsp;Moisture evaporating from your skin will immediately start cooling you dramatically, regardless of ambient temp. &nbsp;Fatal embolism/bends/anoxia will immobilize you very quickly.&nbsp;Not sure what would kill you first, but it would be painful in the extreme. &nbsp;&nbsp;{if you try this, let me know how close I go this}&nbsp;&nbsp;&nbsp; <br /> Posted by vogon13</DIV></p><p>There was a segment on the History Channel series "The Universe" on this very topic. &nbsp;One point it mentioned was that after 15 seconds, the moisture on the surface of your eyes would boil off, making it difficult to see or blink. &nbsp;If you made the mistake of holding your breath, the aveoli in your lungs would burst, causing pulmonary bleeding. &nbsp;Your abdomen would swell, so if you were wearing tight garments, they would become quite uncomfortable, if not painful. &nbsp;And men might experience an erection of their penis!</p> <div class="Discussion_UserSignature"> </div>
 
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UFmbutler

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<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>&nbsp; And men might experience an erection of their penis!</DIV></p><p>Hmm...maybe we should build some retirment colonies on Mars to cut into Viagra's profits.&nbsp;</p> <div class="Discussion_UserSignature"> </div>
 
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brandbll

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Ok, so what if i wore goggles and sealed every orifice of my body with plugs or what not and then held my mouth closed?&nbsp; <div class="Discussion_UserSignature"> <p><font size="3">You wanna talk some jive? I'll talk some jive. I'll talk some jive like you've never heard!</font></p> </div>
 
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MeteorWayne

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Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>Ok, so what if i wore goggles and sealed every orifice of my body with plugs or what not and then held my mouth closed?&nbsp; <br />Posted by brandbll</DIV><br /><br />Careful, you're gonna get vogon all excited! :) <div class="Discussion_UserSignature"> <p><font color="#000080"><em><font color="#000000">But the Krell forgot one thing John. Monsters. Monsters from the Id.</font></em> </font></p><p><font color="#000080">I really, really, really, really miss the "first unread post" function</font><font color="#000080"> </font></p> </div>
 
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Mee_n_Mac

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<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>Ok, so what if i wore goggles and sealed every orifice of my body with plugs or what not and then held my mouth closed?&nbsp; <br />Posted by <strong>brandbll</strong></DIV><br /><br />Are you asking a science question or auditioning for a role in Pulp Fiction II ?</p><p><img src="http://sitelife.space.com/ver1.0/content/scripts/tinymce/plugins/emotions/images/smiley-sealed.gif" border="0" alt="Sealed" title="Sealed" />&nbsp;<img src="http://sitelife.space.com/ver1.0/content/scripts/tinymce/plugins/emotions/images/smiley-wink.gif" border="0" alt="Wink" title="Wink" /></p><p>I'd like to think you'd be OK for a little while but I've read that holding your breath is a problem because your lungs will expand and result in embolisms of the air sacs (alveoli) in your lungs.&nbsp; It doesn't seem to me that your lungs would expand that much but I'm no doctor.&nbsp; I do know we've gone through this whole discussion on exposure to vacuum before and I'd bet it's here in this forum.</p><p>&nbsp;</p><p>EDIT : Well there was this thread on this question in this forum but it wasn't the one I was semi-remembering.&nbsp; Must be over in the Unexplained Forum.</p> <div class="Discussion_UserSignature"> <p>-----------------------------------------------------</p><p><font color="#ff0000">Ask not what your Forum Software can do do on you,</font></p><p><font color="#ff0000">Ask it to, please for the love of all that's Holy, <strong>STOP</strong> !</font></p> </div>
 
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derekmcd

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<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>Actually you would have to exhale your breath before going outside.&nbsp; If you tried to hold a lungful of air, and then went outside, the pressure change could damage your lungs.I imagine you could remain conscious for about as long as you could hold your breath in an exhaled condition.&nbsp; Maybe 30 seconds if you are in good shape.&nbsp;&nbsp; The air would feel like a dry warm day on Mt Everest - if Mt Everest could ever warm up!&nbsp; [Air pressure on Mt Everest = 0.29 atmospheres,&nbsp;&nbsp; The air pressure at the bottom of Hellas on Mars (lowest point) is about 0.012 atmospheres, which is barely high enough that water could exist as a liquid.]&nbsp;&nbsp; As others have commented, the low air pressure could cause embolisms and the 'bends'.&nbsp; I think that repeated exposure to this low a pressure could lead to brain and organ damage from bubbles in the veins. <br /> Posted by silylene</DIV></p><p>There's a breathing trick you can use in such a case.&nbsp; Inhale as much as you can and exhale as much as you can repeatedly for a couple minutes (slowly so you don't hyperventilate) then exhale completely and you will find you can hold your breath much longer than 30 seconds with empty lungs.&nbsp; You can reach several minutes if you use an oxygen mask.&nbsp; It's all about getting blood oxygen rich (but not too much deplete the CO2 and constrict blood vessels).</p><p>I thinks it is a yoga thing, but don't remember the name of the technique.</p><p>Try it... it works.&nbsp; First time just breath normally, exhale and hold.&nbsp; 30 seconds would be good.&nbsp; Then try the above... you will notice a huge difference. </p><p>&nbsp;</p> <div class="Discussion_UserSignature"> <div> </div><br /><div><span style="color:#0000ff" class="Apple-style-span">"If something's hard to do, then it's not worth doing." - Homer Simpson</span></div> </div>
 
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MeteorWayne

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<p>BTW, brandbll, did you intentionally misspell weird, or can you or I edit the title of this thread. It hurts my eyes every time I look at the thread list :)</p> <div class="Discussion_UserSignature"> <p><font color="#000080"><em><font color="#000000">But the Krell forgot one thing John. Monsters. Monsters from the Id.</font></em> </font></p><p><font color="#000080">I really, really, really, really miss the "first unread post" function</font><font color="#000080"> </font></p> </div>
 
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