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Cake day: October 12th, 2024

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  • The price has nothing to do with patents, it’s economy of scale - LCDs ship at a rate of billions per quarter, and are included in every device under the sun, whereas e-ink screens basically only ship in niche luxury devices (ereaders/enotes) that can be replaced by your phone and an ipad respectively. As a result, LCDs ship several orders of magnitude more screens, and reap the resulting economies of scale.

    Yes, EInk corp has patents, but that doesn’t prove that the price is caused by the patents.

    Currently, our best hope of seeing prices come down is 1) if the fast-multidye tech (i.e. the Gallery 3 thing) takes off enough to give e-notes mass market appeal (color drawing and comic book reading could be huge, maybe) and thus some extra economy of scale, or 2) if GoodDisplay’s DES screens get their PPI up to 300 and thus are able to compete in the ereader space against E-Ink’s MED.

    DES = Display Electronic Slurry, AKA the cofferdam tech. It’s a different method of creating an e-ink screen that (apparently) doesn’t touch E-Ink’s patents, and it works by creating a grid of ditches to be filled up with the e-ink liquid and ink (where 1 ditch = 1 pixel). In contrast, E-Ink’s MED (=Microencapsulated Electrophoretic Display) produces self-contained microcapsules that have the liquid/ink sealed inside, and then the microcapsules are sprinkled onto the screen’s pixel grid like Hundreds And Thousands, and each microcapsule is substantially smaller than a pixel, and each pixel toggles several microcapsules. The microcapsules sometimes overlap the border of the pixel grid (since they’re a bunch of packed circles basically), which breaks up the straightness of the pixel grid and is what gives E-Ink screen their ‘grainy’ look where DES screens are more noticeably checkerboarding. This could potentially give MED a long-term aesthetic advantage, although that might turn out to be a non-issue for DES with sufficiently high PPI.

    The advantage of DES is that because it skips a layer (the slurry is directly on the substrate, rather than in microcapsules on the substrate) it could potentially be higher-resolution(/PPI), and higher contrast. Also possibly cheaper, since it might be able to skip a manufacturing step of making the microcapsules. Maybe.



  • The European and Japanese cities featured in this article as exemplars evolved they way they did under severe feudal land restrictions

    Ok, how about the city of Pompeii (which was entombed by the volcano in ~50BC), or Tenochitlan/Mexico city (which was built before European contact, or the city of Cusco (ditto), or the city of Petra (which had plenty of spare desert)? Or Venice, or Mateba, or pick-a-town-any-town.

    What “severe feudal land restrictions” do you mean? Can you elaborate?

    Here on slrpnk.net I see quite a few “new urbanists” endorsing solarpunk visions with wide streets. I posted this partially in response to that.

    I could link a newer article, but this one works just fine. Articles don’t have an expiry date, if you have an actually valid criticism then say it.

    If it helps, replace “organically” with “incrementally and due to decentralized choices”.



  • So just to be clear: a cube truck (like in the top picture in that wikipedia link) is 2meters wide. A 6 meter wide road can have 2 cube trucks, passing eachother by, while still having room between both eachother and the walls. Also, you can literally park a cube truck in front of your store to unload it, and there’s room for another cube truck to go around it.

    In fact, I’ve been to this one street of warehouses (literally a street of warehouses, in an industrial area) whose road couldn’t have been more than 10m, wall-to-wall, and I didn’t see them having throughput problems. People massively overestimate how important throughtput is, mainly because the throughput they look for is passenger cars.

    Also: Deliveries don’t need to be cube trucks. There are other options - vans, cargo bikes and bike-trailers, literally just walking in with a tray of the delivery, whatever. The smaller the street, the smaller the businesses should be, and the less throughput they should need.

    I can’t tell what A.A.P.'s (the link guy’s) beliefs on this are, but generally the answer is either 1) it’s fine (see: the cube truck thing), 2) arterial streets every ~5 blocks (that are wide and primarily for cars), or 3) trains. Or some mixture of them all.

    with supermarkets, do we build service lanes designed more for delivery trucks

    As a quick aside, before I answer that: Honestly, supermarkets suck and mostly make sense when people are carrying their shopping by car. Smaller shops work just fine.

    To answer your question: I don’t think so, but don’t quote me on that. Supermarkets receive… one or two trucks per day? And supermarkets are big (partially due to wide aisles to handle the trolleys needed to buy a whole carload of goods, to be fair). So I don’t think they’re that important.