Cancer Posted December 9, 2017 Report Share Posted December 9, 2017 No space for one. There's a pretty nasty slope. Quote Link to comment Share on other sites More sharing options...
L. Marcus Posted December 9, 2017 Report Share Posted December 9, 2017 Bring out the Excavator! Quote Link to comment Share on other sites More sharing options...
Cancer Posted December 10, 2017 Report Share Posted December 10, 2017 The folks whose houses are upslope of the site ... have issues with that. The hills here are just big mounds of moraine, so things aren't as stable as one might guess. Parts of the east face of the hill have had landslides, albeit minor ones, in the last two or three decades. Quote Link to comment Share on other sites More sharing options...
L. Marcus Posted December 10, 2017 Report Share Posted December 10, 2017 Damn silly place to build, then. Quote Link to comment Share on other sites More sharing options...
Cancer Posted December 10, 2017 Report Share Posted December 10, 2017 Well, the next megathrust earthquake will clear it all out. Quote Link to comment Share on other sites More sharing options...
L. Marcus Posted December 10, 2017 Report Share Posted December 10, 2017 Oh, goody. Quote Link to comment Share on other sites More sharing options...
Cancer Posted December 10, 2017 Report Share Posted December 10, 2017 The last one was in 1700, and they seem to happen every 400 years or so. Quote Link to comment Share on other sites More sharing options...
L. Marcus Posted December 10, 2017 Report Share Posted December 10, 2017 You certainly have exciting geology. Quote Link to comment Share on other sites More sharing options...
Cancer Posted December 10, 2017 Report Share Posted December 10, 2017 Yes, it's among our greater attractions and more famous and endearing features Quote Link to comment Share on other sites More sharing options...
L. Marcus Posted December 10, 2017 Report Share Posted December 10, 2017 Also rain forests. Quote Link to comment Share on other sites More sharing options...
Cancer Posted December 10, 2017 Report Share Posted December 10, 2017 And old Manhattan Project atomic works, but neither of those are geological features. Quote Link to comment Share on other sites More sharing options...
L. Marcus Posted December 10, 2017 Report Share Posted December 10, 2017 And the Oregonian poison gas plant. Quote Link to comment Share on other sites More sharing options...
Cancer Posted December 10, 2017 Report Share Posted December 10, 2017 And all the hydroelectric power dams on the Columbia and Snake Rivers. Quote Link to comment Share on other sites More sharing options...
Pariah Posted December 11, 2017 Report Share Posted December 11, 2017 The Pacific Science Center is pretty cool. Quote Link to comment Share on other sites More sharing options...
Cancer Posted December 11, 2017 Report Share Posted December 11, 2017 It is. Haven't been there in a good while, but it was once a regular weekend thing. Quote Link to comment Share on other sites More sharing options...
L. Marcus Posted December 11, 2017 Report Share Posted December 11, 2017 Do they have bottle rockets? Quote Link to comment Share on other sites More sharing options...
Cancer Posted December 11, 2017 Report Share Posted December 11, 2017 No, Seattle has stuffy old fire code regs about those. OTOH, I have seen water rockets there. Quote Link to comment Share on other sites More sharing options...
Pariah Posted December 11, 2017 Report Share Posted December 11, 2017 Water rockets fly higher with cold water than with hot water. Quote Link to comment Share on other sites More sharing options...
Cancer Posted December 11, 2017 Report Share Posted December 11, 2017 That makes sense, though it seems like it should be a minor effect. Quote Link to comment Share on other sites More sharing options...
L. Marcus Posted December 11, 2017 Report Share Posted December 11, 2017 My hypothesis: prob'ly something to do with higher density. Quote Link to comment Share on other sites More sharing options...
Pariah Posted December 11, 2017 Report Share Posted December 11, 2017 It's actually quite noticeable. It's the result of gases being much more soluble in water at lower temperatures. More dissolved gas, hence more thrust when they come out of solution. Quote Link to comment Share on other sites More sharing options...
Cancer Posted December 11, 2017 Report Share Posted December 11, 2017 Hm, there I go assuming pure water. I'll have to push some numbers around. Quote Link to comment Share on other sites More sharing options...
L. Marcus Posted December 11, 2017 Report Share Posted December 11, 2017 So, ix-nay on the ensity-day? Quote Link to comment Share on other sites More sharing options...
Cancer Posted December 11, 2017 Report Share Posted December 11, 2017 Density is an effect, but it ought to be a minor one, since over the range 4 C to 40 C water's density changes by a bit less than a percent. Having gases come out of solution to increase the velocity of the exhaust would increase the impulse, and that's an effect I need to explore quantitatively. Quote Link to comment Share on other sites More sharing options...
Pariah Posted December 11, 2017 Report Share Posted December 11, 2017 Wa are talking about the rockets you fill half-full with water and then add compressed air, correct? Quote Link to comment Share on other sites More sharing options...
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