--- Log opened Mon Jan 06 00:00:40 2025
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04:47 < L29Ah> geraldmahony> What do you guys think?
04:47 < L29Ah> now that's the scifi i don't regret reading
04:48 < L29Ah> geneh2: drag is velocity squared
04:50 < L29Ah> perhaps a bit more so at typical airliner speeds that go probably transonic at some places
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14:33 < hprmbridge> kanzure> this one must be for fenn https://youtu.be/eDr6_cMtfdA
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15:00 < BlackHat> hi, i was invited by racoon, who introdcued himself as a founder of this team
15:01 < BlackHat> anyone online, or should I just leave it
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15:44 < fenn> don't worry small data dude, there are dozens of us
15:44 < L29Ah> geneh2: so, why are we still using hydrostatic boat hulls for mass transportation?
15:45 < L29Ah> s/hydrostatic/buoyant/
16:02 < superkuh> As opposed to hydrodynamic lifting surfaces?
16:08 < L29Ah> superkuh: yes
16:08 < L29Ah> as geneh2 suggests they would be more energy-efficient
16:09 < superkuh> Crashes with hydrofoils are unavoidable and at the scale of large transport make them undesirable.
16:09 < L29Ah> Crashes with airplanes are unavoidable and at the scale of large transport make them undesirable.
16:10 < superkuh> A good point. We should do more trains.
16:11 < L29Ah> we aren't living on an urbworld enough yet
16:12 < L29Ah> high speed train system is really expensive both in resources and politics
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17:36 < fenn> von karman's point was about aerodynamics; trains roll on a solid surface so the efficiency law doesn't apply to them. even better would be evacuated tube transport. you can shove a lot of material through a narrow high speed tube
17:36 < fenn> https://www.bfi.org/challenge/2008/the-water-bullet/
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22:15 < superkuh> <egobot> Soft Metalens for Broadband Ultrasonic Focusing Through Aberration Layers [3 bookofjoe] https://www.nature.com/articles/s41467-024-55022-2 https://news.ycombinator.com/item?id=42598463
--- Log closed Tue Jan 07 00:00:41 2025