Jihad needs scientists
in [Design]
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From: MooseFET on 20 Mar 2007 18:47 On Mar 20, 6:53 am, "nonse...(a)unsettled.com" <nonse...(a)unsettled.com> wrote: > MooseFET wrote: > > On Mar 20, 2:52 am, "nonse...(a)unsettled.com" <nonse...(a)unsettled.com> > > wrote: > > >>MooseFET wrote: > > > [... in a kitchen ....] > > >>>>>You can get under 50Tor with water as the working material. A steam > >>>>>filled container placed in the freezer would get down to quite low > >>>>>pressures: > > >>>>> P = ( (T-Tmelt)/(Tboil-Tmelt) )^4 > > >>>>True, but.... > > >>>Actually not really true in a freezer. Pressures less than zero > >>>rarely happen. > > >>If we're into corrections then start with your misspelling > >>of Torr. I assumed you were willing to go lower than the > >>"normal" 0 Fahrenheit. Rather ordinary lab freezers go to > >>-86C while cooling using expansion of nitrogen gets much > >>lower. You're going to haw to redefine freezer to get > >>to the 50 Torr you proposed. > > > The equation for pressure I gave above is not accurate. It fails > > badly when you go down near zero C. > > > I think you need to recheck your figures on the temperature needed. > > It is your equation. Sounds to me like you > got lost in all this. A quick review may help you to understand. I posted an equation which is fairly accurate over the 0C to 100C span. You introduced the unreasonable suggestion that -86C was needed. At this point I pointed out that you needed recheck your math if you came up with that answer and that the equation is not useful below freezing. You somehow come to the conclusion that I got lost. This is interesting. > >>The operative word is can. Through a longer thermal > >>cycle from ambient to some low temperature most stoppers > >>will leak. > > Not from 212 to 0C they don't seem to. > > "don't seem to"? This was your suggestion, and now > it seems to me you're saying it won't work anyway. You suggested they leak. I say they don't seem to. You somehow conclude that this is me saying my method won't work. I assume you've had a few.
From: nonsense on 20 Mar 2007 23:03 MooseFET wrote: > I assume you've had a few. Nice. Your participation began a significant decline when you wrote: >The equation for pressure I gave above is not accurate. You're on your own.
From: jmfbahciv on 21 Mar 2007 06:57 In article <MPG.2069abdf39337b7f98a1a5(a)news.individual.net>, krw <krw(a)att.bizzzz> wrote: >In article <etohvn$8ss_003(a)s920.apx1.sbo.ma.dialup.rcn.com>, >jmfbahciv(a)aol.com says... >> In article <MPG.20686614150361ab98a183(a)news.individual.net>, >> krw <krw(a)att.bizzzz> wrote: <snip> >> >P.S. I don't advise playing with gunpowder in the kitchen. ;-) >> >> Oh, I don't intend to do this one. I just got curious and couldn't >> figure out how. What's wrong with gunpowder in the kitchen? > >Fire and explosions are frowned upon in my house. Gunpowder must >remain in the bullets. What if one of your guns is a powder musket? >> >> What table do you think my Dad used when he worked on his guns? > >My bet is that he didn't fire them in the house. Much noise, stink, >and things get broken. He fired through the window. (He opened it before he fired.) /BAH
From: krw on 21 Mar 2007 10:53 In article <etr331$8ss_001(a)s997.apx1.sbo.ma.dialup.rcn.com>, jmfbahciv(a)aol.com says... > In article <MPG.2069abdf39337b7f98a1a5(a)news.individual.net>, > krw <krw(a)att.bizzzz> wrote: > >In article <etohvn$8ss_003(a)s920.apx1.sbo.ma.dialup.rcn.com>, > >jmfbahciv(a)aol.com says... > >> In article <MPG.20686614150361ab98a183(a)news.individual.net>, > >> krw <krw(a)att.bizzzz> wrote: > > <snip> > > >> >P.S. I don't advise playing with gunpowder in the kitchen. ;-) > >> > >> Oh, I don't intend to do this one. I just got curious and couldn't > >> figure out how. What's wrong with gunpowder in the kitchen? > > > >Fire and explosions are frowned upon in my house. Gunpowder must > >remain in the bullets. > > What if one of your guns is a powder musket? One isn't. ;-) > >> What table do you think my Dad used when he worked on his guns? > > > >My bet is that he didn't fire them in the house. Much noise, stink, > >and things get broken. > > He fired through the window. (He opened it before he fired.) I bet that woke up the cat. SWMBO doesn't even like my guns loaded in the house. She doesn't even like me threatening the squirrels. "No one would even hear a .22short." -- Keith
From: nonsense on 21 Mar 2007 13:24
jmfbahciv(a)aol.com wrote: > In article <MPG.2069abdf39337b7f98a1a5(a)news.individual.net>, > krw <krw(a)att.bizzzz> wrote: > >>In article <etohvn$8ss_003(a)s920.apx1.sbo.ma.dialup.rcn.com>, >>jmfbahciv(a)aol.com says... >> >>>In article <MPG.20686614150361ab98a183(a)news.individual.net>, >>> krw <krw(a)att.bizzzz> wrote: > > > <snip> > >>>>P.S. I don't advise playing with gunpowder in the kitchen. ;-) >>> >>>Oh, I don't intend to do this one. I just got curious and couldn't >>>figure out how. What's wrong with gunpowder in the kitchen? >> >>Fire and explosions are frowned upon in my house. Gunpowder must >>remain in the bullets. > > > What if one of your guns is a powder musket? > > >>>What table do you think my Dad used when he worked on his guns? >> >>My bet is that he didn't fire them in the house. Much noise, stink, >>and things get broken. > > > He fired through the window. (He opened it before he fired.) I expect to do the same next fall. |