• 3 Posts
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Joined 1 year ago
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Cake day: June 14th, 2023

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  • Very likely. Lots of super geeks on staff.

    But it’s also possible some astroenthusiast did the math and emailed it to NASA, and whoever got that endo thought it would be cool and passed it to someone who could schedule the instrument. If you think about your geekiest friend and how they’d react if you sent them something truly unique about their geekdom that they could act on - well, that’s pretty much how every engr/scientist at NASA would react.



  • You could say the same for a finite element model. A junior engineer with just 4 years of training can solve, explicitly, the deflection at the center of a slender, simple-simple beam of prismatic section and produce an exact (if slightly incorrect) answer. Building a FEM of the same can solve the problem and take longer (to make the model) with similar accuracy, both of which are good enough for design work.

    Only a fool wouldn’t have a FEM around though, as it can solve problem that would take centuries for a human to solve. They may as well make a cartoon with the child digging a 3” hole in beach sand and then showing a backhoe making a jagged edged hole of the same size.


  • Overzeetop@lemmy.worldtoMemes@sopuli.xyzApple Vision Pro
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    9 months ago

    I have own a rift and Q1, 2, and 3 (plus some older, but polished, Cardboard products) but have NOT had a VP demo. The jump from fresnel to pancake lenses - for productivity purposes - is substantial and I expect the VP’s moderately higher resolution to be enough to make the headset actually productive (Q3 is close but still resolution handicapped). I expect the tight integration with OSX to be useful and, if I were (a) on OSX (b) didn’t already work on an 8K monitor and © was a digital nomad or had no dedicated office/room in which to work, I could see a use case for them. Having attempted to work in i(Pad)OS professionally as a remote platform, the standalone capabilities might be useful for a blogger or journalist but is utterly unsuitable for professional work, even less so without a dedicated keyboard and mouse/advanced multitouch track pad. Again, I’ve not used the VP hand-sensing for advance selection* but my expectation is that it is still in its infancy, even with (and perhaos hindered by) eye focus selection.

    My hope is that $3500/pop will allow more research, more fine tuning, and advancing to vision limited resolution (Apple is still a factor of 4 short in pixel count, and a factor of 6+ short of my desktop monitor) for future headsets.

    * multi-functional, 3D manipulation of, say, finite element model components or full building/industrial models in a program like Revit or multi-assembly models in Blender or Fusion360, where you have 4+ key modifiers plus 3 buttons and two scroll wheels for fine manipulation and hundreds of quick-key commands)







  • Any braking without energy recovery is wildly wasteful. Public transit (busses, trains) are fucking terrible wastes of energy due to their large mass and frequent stops. Hybrid and/or electric busses are, in this respect, potentially far superior to their diesel counterparts. I’m not a train person (engineer…train…haha) but I don’t think even the all electric trains use regenerative braking and there are few battery powered trains in service.

    I’ve spent the last year altering my driving habits when I can. I try not to be an asshole when others are around/in traffic, but when I’m not pressed I will coast to a stop as much as possible (esp uphill) and use hills to gain momentum. Over 6000 miles, I’ve raised my overall mpg around 18%.


  • Not quite. EVs can still do door to door transport, are faster portal to portal, and have a vastly more diverse infrastructure, including the ability to (at least in a limited extent) traverse areas without track or road infrastructure. Public transit is still better, especially for rail, in reducing energy losses due to wheel deformation, reduction of human fatigue and dependence on attentiveness, and in some cases station to station speed and net air resistance per passenger mile. Since this is technology instead of fuckcars, it seems reasonable not to circlejerk too much.