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From: Hammo on 16 Feb 2007 04:08 <bigiain(a)mightymedia.com.au> wrote: > Hammo <hbaj2006(a)aapt.net.au> wrote: >> <bigiain(a)mightymedia.com.au> wrote: >>> Hammo <hbaj2006(a)aapt.net.au> wrote: >>>> <bigiain(a)mightymedia.com.au> wrote: >>>>> "Knobdoodle" <knobdoodle(a)hotmail.com> wrote: >>>>>> "Peter Cremasco" <FirstName.LastName(a)bigpond.com> wrote in message >>>>>> news:jk38t29gcr43dcheiaq60ver5gb1ad73am(a)4ax.com... >>>>>>> On Tue, 13 Feb 2007 13:18:38 GMT, "Knobdoodle" <knobdoodle(a)hotmail.com> >>>>>>> wrote: >>>>>> >>>>>>>> It also expands when cooled below zero! >>>>>>>> [cue Twilight-Zone music] >>>>>>> >>>>>>> Below 4 degrees C, I think. >>>>>>> --- >>>>>> You're right; but I think it's negative 4. >>>>> >>>>> Nope, plus 4, thats why ice floats... >>>> >>>> Eh? Flotation is based on temperature? >>>> >>>> That makes no sense. >>> >>> You are, of course, completely right Hammo, as usual. The expansion of >>> water as it drops below 4 degrees has absolutely nothing to do with why >>> ice floats, I must have forgotten to factor in the efficiency of the >>> cooling system, or the torque on the refrigerator compressor or some >>> other completely irrelevant detail. >>> >>> Lets see: >>> >>> http://www.google.com/search?q=why+ice+floats >>> >>> Not a single one of the returns there says anything about temperature >>> having anything to do with why ice floats, does it? >> >> So your post and I quote.. >> >> BigIain: " Nope, plus 4, thats why ice floats..." >> >> Tell me what that was supposed to mean. >> >> Hammo : I'm, pretty sure that what I posted was "Eh? Flotation is based on >> temperature? "That makes no sense". >> >> I'm looking forward how you managed to interpret that to mean that it is, >> especially after you pointed out that a temp of "plus 4" was why ice floats. >> > > I know you're a very busy guy Hamish, but it's all in the context, all > of which you've quoted up there. Try and follow along: > > Clem said "It also expands when cooled below zero!", > then Peter said "Below 4 degrees C, I think.", > then Clem said "You're right; but I think it's negative 4.", > then I said "Nope, plus 4, thats why ice floats..." - pointing out that > if you had to cool water down below -4 degrees until it started > expanding, ice _wouldn't_ float. I don't recall seeing this last bit of your explanation. Has it always been there? I disagree with you. The density of ice does change the colder it gets, and so even if the change started there, ice would "float". As you know how to google, look it up, or consult wikipedia for a way to calculate it. > If you expect every sentence posted to usenet to be complete in itself > and completely context insensitive, it doesn't surprise me too much that > you've been showing signs of insanity ;-) Yeah, like I'd ask someone that sits behind a desk all day for an opinion on insanity. > > big (are you gonna stalk me round every aus.moto thread since I gave up > on you in the "magic headlights running on no energy" thread? ;-) ) Sorry to disengage you from your delusion that you are the focus of anyone's unwanted attention, regardless of how flattering you may find it. Your need to be derogatory, imperious, entitled and forceful in your comments shows traits that are far more concerning. Hammo
From: Knobdoodle on 16 Feb 2007 05:14 "Toosmoky" <toosmoky(a)hotmail.com> wrote: > Iain Chalmers wrote: > >> Perhaps only blimps and air-ships actually "float" in Nev-land since they >> manage to keep 100% of their mass out of the water? :-) > > As ships displace water, so airships displace air... > Ships of the desert displace sand. -- Clem (And the purty ones can even displace a woman in a man's heart!)
From: paulh on 16 Feb 2007 05:42 On Fri, 16 Feb 2007 18:37:54 +1000, Toosmoky <toosmoky(a)hotmail.com> wrote: >Iain Chalmers wrote: > >> Perhaps only blimps and air-ships actually "float" in Nev-land since >> they manage to keep 100% of their mass out of the water? :-) > >As ships displace water, so airships displace air... Air is compressible, Water isn't. So airships just might push the air aside. paulh
From: Dale Porter on 16 Feb 2007 05:45 "paulh" <paulh(a)fahncahn.com> wrote in message news:qi2bt2hq7nbhf2t7lhsl3o12l3fthigvmf(a)4ax.com... > On Fri, 16 Feb 2007 18:37:54 +1000, Toosmoky <toosmoky(a)hotmail.com> > wrote: > >>Iain Chalmers wrote: >> >>> Perhaps only blimps and air-ships actually "float" in Nev-land since >>> they manage to keep 100% of their mass out of the water? :-) >> >>As ships displace water, so airships displace air... > > Air is compressible, Water isn't. So airships just might push the air > aside. > > But isn't pushing the air aside also displacing it? -- Dale Porter GPX250 -> CBR600 -> VTR1000 + VT250F-J
From: Toosmoky on 16 Feb 2007 07:05
Dale Porter wrote: > "paulh" <paulh(a)fahncahn.com> wrote >> Air is compressible, Water isn't. So airships just might push the air >> aside. > But isn't pushing the air aside also displacing it? 1. If an airship came down in the ocean, would the average world barometric pressure change? 2. If so, would it be measurable? 3. Would it be a waste of helium? -- Toosmoky I think I've got the hang of this now... http://toosmoky.d2.net.au |