4 ms·

They did a mall in Helsinki with Penrose tiles, I really like it. http://www.neverendingbooks.org/penrose-tiles-in-helsinki http://www.neverendingbooks.org/pen

They did a mall in Helsinki with Penrose tiles, I really like it. http://www.neverendingbooks.org/penrose-tiles-in-helsinki http://www.neverendingbooks.org/penrose-tiles-in-helsinki

throwawaymaths 4y ago
The Salesforce center in SF looks like it's Penrose tiles, but I suspect they are cheating and are using a large segment repeated on each section of the skirt.
- RC_ITR 4y ago
  Maybe, but Penrose himself was involved, so I'd be very bummed if that were true. SAN FRANCISCO--(BUSINESS WIRE)--The Transbay Joint Powers Authority (TJPA) has received approval from Dr. Roger Penrose, the eminent British mathematical physicist, to incorporate his groundbreaking geometrical pattern in the design of the exterior walls of the future Transbay Transit Center (TTC) designed by Pelli Clarke Pelli Architects (PCPA). Dr. Penrose and PCPA are working in tandem to incorporate Dr. Penrose’s elegant design, known as the Penrose Rhombus Tiling, in the skin of the TTC. The design is remarkably simple but unique because it can be extended infinitely without repeating itself. The Penrose system is ideal for the perforations in the metal panels that will form the curved exterior of the Transit Center. https://www.businesswire.com/news/home/20130711006350/en/Roger-Penrose-Puts-Prints-on-San-Francisco-Transit-Center https://www.businesswire.com/news/home/20130711006350/en/Rog...
  - throwawaymaths 4y ago
    The reason why I'm skeptical is because it's cut out metal. Actual tiles would be easy to do it "correctly", but I don't imagine them I dunno, laser cutting? each skirt piece individually. I'd love to be proven wrong though
    - RC_ITR 4y ago
      Isn't the point of Penrose tiles that it's made of 2 shapes (i.e. you only need two arbitrarily movable stamps to make it work)?
    - Gare 4y ago
      Why not? If it's laser cut, then it's almost no additional cost to make each sheet different. It's all software.
Sharlin 4y ago
Yeah. I wonder how the tilesetters actually did the concrete tile-laying part. There are "quasiperiodic" Penrose tilings that are composed of fairly regular "macroblocks", but this Keskuskatu tiling looks pretty random to me. Did they just have huge printouts of the pattern? Did they develop an intuition of which tile goes where after a while? Were they happy to do something different for a chance, or annoyed by the convoluted task? :D
iviv 4y ago
Out of curiosity, is it idiomatic to call a street next to a shopping center a mall? Ignorant Finn here.
- cromulent 4y ago
  No, probably my age and background. Street with shops and no cars.
  - mjevans 4y ago
    I think in the US that would colloquially be called an: Outdoor mall Mall alone being the 80s style indoor walkable variety. A 'strip mall' usually a single (often deformed to some degree) line of stores along a sidewalk next to a huge parking lot, also often with an island restaurant or small store that wants to stand out closer to the street edge of said lot.
  - jasomill 4y ago
    "Mall" can refer to a pedestrian area within a city more generally; shops are optional, e.g., https://nps.gov/nama/index.htm https://nps.gov/nama/index.htm Also, sometimes cars, https://www.royalparks.org.uk/parks/st-jamess-park/things-to-see-and-do/landmarks-and-viewpoints/the-mall https://www.royalparks.org.uk/parks/st-jamess-park/things-to...
- aaron695 4y ago
  [dead]
- bobbylarrybobby 4y ago
  Sometimes. “Mall” alone generally refers to a big indoor shopping space with many distinct stores; I'd probably call the outdoor version an... “outdoor mall”.
diggernet 4y ago
Or, on a much smaller scale... http://www.tessellations.org/real-materials-tessellations-16.shtml http://www.tessellations.org/real-materials-tessellations-16...

They did a mall in Helsinki with Penrose tiles, I really like it. http://www.neverendingbooks.org/penrose-tiles-in-helsinki http://www.neverendingbooks.org/penrose-tiles-in-helsinki

throwawaymaths 4y ago

The Salesforce center in SF looks like it's Penrose tiles, but I suspect they are cheating and are using a large segment repeated on each section of the skirt.

RC_ITR 4y ago
Maybe, but Penrose himself was involved, so I'd be very bummed if that were true. SAN FRANCISCO--(BUSINESS WIRE)--The Transbay Joint Powers Authority (TJPA) has received approval from Dr. Roger Penrose, the eminent British mathematical physicist, to incorporate his groundbreaking geometrical pattern in the design of the exterior walls of the future Transbay Transit Center (TTC) designed by Pelli Clarke Pelli Architects (PCPA). Dr. Penrose and PCPA are working in tandem to incorporate Dr. Penrose’s elegant design, known as the Penrose Rhombus Tiling, in the skin of the TTC. The design is remarkably simple but unique because it can be extended infinitely without repeating itself. The Penrose system is ideal for the perforations in the metal panels that will form the curved exterior of the Transit Center. https://www.businesswire.com/news/home/20130711006350/en/Roger-Penrose-Puts-Prints-on-San-Francisco-Transit-Center https://www.businesswire.com/news/home/20130711006350/en/Rog...
- throwawaymaths 4y ago
  The reason why I'm skeptical is because it's cut out metal. Actual tiles would be easy to do it "correctly", but I don't imagine them I dunno, laser cutting? each skirt piece individually. I'd love to be proven wrong though
  - RC_ITR 4y ago
    Isn't the point of Penrose tiles that it's made of 2 shapes (i.e. you only need two arbitrarily movable stamps to make it work)?
  - Gare 4y ago
    Why not? If it's laser cut, then it's almost no additional cost to make each sheet different. It's all software.

Sharlin 4y ago

Yeah. I wonder how the tilesetters actually did the concrete tile-laying part. There are "quasiperiodic" Penrose tilings that are composed of fairly regular "macroblocks", but this Keskuskatu tiling looks pretty random to me. Did they just have huge printouts of the pattern? Did they develop an intuition of which tile goes where after a while? Were they happy to do something different for a chance, or annoyed by the convoluted task? :D

iviv 4y ago

Out of curiosity, is it idiomatic to call a street next to a shopping center a mall? Ignorant Finn here.

cromulent 4y ago
No, probably my age and background. Street with shops and no cars.
- mjevans 4y ago
  I think in the US that would colloquially be called an: Outdoor mall Mall alone being the 80s style indoor walkable variety. A 'strip mall' usually a single (often deformed to some degree) line of stores along a sidewalk next to a huge parking lot, also often with an island restaurant or small store that wants to stand out closer to the street edge of said lot.
- jasomill 4y ago
  "Mall" can refer to a pedestrian area within a city more generally; shops are optional, e.g., https://nps.gov/nama/index.htm https://nps.gov/nama/index.htm Also, sometimes cars, https://www.royalparks.org.uk/parks/st-jamess-park/things-to-see-and-do/landmarks-and-viewpoints/the-mall https://www.royalparks.org.uk/parks/st-jamess-park/things-to...
aaron695 4y ago
[dead]
bobbylarrybobby 4y ago
Sometimes. “Mall” alone generally refers to a big indoor shopping space with many distinct stores; I'd probably call the outdoor version an... “outdoor mall”.

diggernet 4y ago

Or, on a much smaller scale... http://www.tessellations.org/real-materials-tessellations-16.shtml http://www.tessellations.org/real-materials-tessellations-16...