--- Log opened Thu Apr 20 00:00:37 2023
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05:02 < kanzure> eunuchs and life extension https://twitter.com/s_r_constantin/status/1648758852131643396
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06:03 < kanzure> spacex launch
06:17 < hprmbridge> Perry> T-11m
06:17 < hprmbridge> Alma2562> Sooo excited 😆
06:20 < darsie> https://pad.riseup.net/p/%23%23space Starship launch streams
06:46 < hprmbridge> Perry> Largest rocket to ever clear the tower (or get to max q)
06:46 < hprmbridge> Perry> they’ll get it even better next time.
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07:17 < fenn> check yo staging
07:21 < fenn> think insurance will cover this? https://cdn.discordapp.com/attachments/1092586849605791845/1098609889326157916/2023-04-20_16-03-08.gif
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07:48 < kanzure> is that from the launch?
07:50 < superkuh> https://nitter.net/LabPadre/status/1649053476276797440?s=20#m
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08:27 < hprmbridge> Perry> they really need a flame trench and a deluge system.
08:31 < superkuh> https://nitter.net/pic/orig/media%2FFuKl3PcWwAIjAt5.jpg - crater (beware, this link will crash some versions of hexchat for some reason)
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10:22 < fenn> a little preview ignition slowmo from cosmic perspective https://www.youtube.com/watch?v=nxlZMcC_IYE
11:04 < hprmbridge> nmz787> I wonder what an actual "cosmic perspective" (i.e. satellite webcam) would look like
11:05 < alethkit> Hot take time: Reject first stages, embrace mag lev slides: https://en.wikipedia.org/wiki/Rocket_sled_launch
11:06 < alethkit> It would be very funny to outspeed Elon to getting to Mars with a giant mountain sled
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12:02 < hprmbridge> docl> Yeah if you're still using a rocket, you can use a stationary launcher such as a particle bed heated hydrogen gun to substantially reduce how close to theoretical limits your rocket needs to be to reach orbital velocity. The speed of sound (even for hot hydrogen) prevents actually reaching orbital velocity this way, but hybridizing it with another approach lets it work. Also you can substitute
12:02 < hprmbridge> docl> magnetic interaction with a track or mechanical interaction with a rotating tether for orbital burn (which is about 90% of the energy budget). You only need 2km/s or so to get high enough to do that. A track or tether system has to replenish the lost velocity, but this can come from downmass or by repelling against Earth's magnetic field (this works slower than we need for a rocket, but fast
12:02 < hprmbridge> docl> enough for a dedicated system.)
12:03 < fenn> nmz787_: view from a satellite would probably look something like this: https://www.youtube.com/watch?v=B1R3dTdcpSU
12:14 < hprmbridge> nmz787> fenn oh cool!
12:14 < hprmbridge> nmz787> it happens so fast!
12:14 < hprmbridge> nmz787> it looks way faster from orbit than from ground
12:15 < fenn> that's a timelapse; it takes about 10 minutes
12:15 < hprmbridge> nmz787> oooo
12:15 < fenn> in order to see it you have to use a long duration exposure
12:16 < fenn> or use a camera with higher sensitivity eh
12:19 < fenn> this was a Nikon D5
12:19 < fenn> "Each image is a 1/5 sec exposure at f/1.4, ISO 12800, 85mm focal length. Original image resolution 5568 x 3712 at 24 bits per pixel."
12:22 < fenn> "However, the photos weren't snapped continuously; they were only taken at 1 second intervals. So a realtime video could only play at 1 FPS."
14:09 < hprmbridge> docl> https://onlinelibrary.wiley.com/doi/abs/10.1002/ange.202302809
14:11 < hprmbridge> docl> "Triangular macrocycles of tunable sizes assemble into membranes with atomically precise pores, which exhibit size and shape-dependent molecular sieving towards a series of structurally similar compounds."
14:20 < kanzure> "Top-down design of protein architectures with reinforcement learning" https://www.science.org/doi/10.1126/science.adf6591
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18:52 <+gnusha> https://secure.diyhpl.us/cgit/diyhpluswiki/commit/?id=2a3cf78e Bryan Bishop: transcript: austin bitcoin developers 39 >> http://diyhpl.us/diyhpluswiki/transcripts/austin-bitcoin-developers/2023-04-20-socratic-seminar-39/
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20:27 < hprmbridge> nmz787> https://hackaday.com/2023/04/20/mri-resolution-progresses-from-millimeters-to-microns/#more-586004
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22:41 < fenn> isn't it just light sheet microscopy
22:44 < fenn> https://twitter.com/neuralink/status/1643339633546215430
22:44 < fenn> .t
22:44 < EmmyNoether> At Neuralink, we have imaging capabilities that let us see exactly what’s going on in fully sealed devices. For implant debugging, we often capture high-resolution 2D and 3D images with microCT. It’s what’s on the inside that counts ♥️ #techtuesday https://video.twimg.com/ext_tw_video/1643339178917130250/pu/vid/320x270/O-gL4bK6P0UmkW1k.mp4?tag=12 (@neuralink) 
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--- Log closed Fri Apr 21 00:00:38 2023