From 8e4d5c59462a4b8c1f7a6e9f126b1a932ed2b2d1 Mon Sep 17 00:00:00 2001 From: dakkar Date: Sat, 5 Oct 2019 14:29:21 +0100 Subject: sugihara --- .../arrow-from-above-t.jpg | Bin 0 -> 24399 bytes .../arrow-from-above.jpg | Bin 0 -> 592670 bytes .../modelli/sugihara-impossible-objects/arrow.mp4 | Bin 0 -> 10048751 bytes .../braid-and-nested-from-side-t.jpg | Bin 0 -> 47319 bytes .../braid-and-nested-from-side.jpg | Bin 0 -> 1045702 bytes .../braid-and-nested-t.jpg | Bin 0 -> 37678 bytes .../braid-and-nested.jpg | Bin 0 -> 620989 bytes .../card-suits-plane-t.jpg | Bin 0 -> 23127 bytes .../card-suits-plane.jpg | Bin 0 -> 370218 bytes .../card-suits-plus-pointy-circles-from-side-t.jpg | Bin 0 -> 44251 bytes .../card-suits-plus-pointy-circles-from-side.jpg | Bin 0 -> 1136395 bytes .../card-suits-plus-pointy-circles-t.jpg | Bin 0 -> 45986 bytes .../card-suits-plus-pointy-circles.jpg | Bin 0 -> 811612 bytes .../sugihara-impossible-objects/fish-bone-t.jpg | Bin 0 -> 18468 bytes 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file mode 100644 index 0000000..be0a467 Binary files /dev/null and b/additions/modelli/sugihara-impossible-objects/square-circles.jpg differ diff --git a/src/modelli/sugihara-impossible-objects/.gitignore b/src/modelli/sugihara-impossible-objects/.gitignore new file mode 100644 index 0000000..08d33d4 --- /dev/null +++ b/src/modelli/sugihara-impossible-objects/.gitignore @@ -0,0 +1,2 @@ +/document.en.du.xml +/document.it.du.xml diff --git a/src/modelli/sugihara-impossible-objects/document.en.rest.txt b/src/modelli/sugihara-impossible-objects/document.en.rest.txt new file mode 100644 index 0000000..c8f9183 --- /dev/null +++ b/src/modelli/sugihara-impossible-objects/document.en.rest.txt @@ -0,0 +1,99 @@ +======================================= +Sugihara Kokichi's "impossible objects" +======================================= +:CreationDate: 2019-10-05 12:22:35 +:Id: modelli/sugihara-impossible-objects +:tags: - japanese + - 3dPrint + +In September 2019, `Japan House`_ hosted a presentation by `SUGIHARA +Kokichi`_, inventor of many optical illusions realised as solid +objects. He had brought some examples, and I took pictures. + +An arrow that always points to the right: + +.. raw:: html + + + +This is what it looks like when viewed from above: + +.. image:: arrow-from-above-t.jpg + :target: arrow-from-above.jpg + +Four blue circles, and four heart shapes, but when seen from the other +side (here, through a plain mirror) it's a blue 4-pointed star and the +four suits of playing cards: + +.. image:: card-suits-plus-pointy-circles-t.jpg + :target: card-suits-plus-pointy-circles.jpg + +and this is what they look like from the side: + +.. image:: card-suits-plus-pointy-circles-from-side-t.jpg + :target: card-suits-plus-pointy-circles-from-side.jpg + +Six squares, or six circles? + +.. image:: square-circles-t.jpg + :target: square-circles.jpg + +from the side: + +.. image:: square-circles-from-side-t.jpg + :target: square-circles-from-side.jpg + +A ring of circles, and three concentric circles, but from the other +side it's a ring of squares, and three intersecting circles: + +.. image:: braid-and-nested-t.jpg + :target: braid-and-nested.jpg + +seen from the side: + +.. image:: braid-and-nested-from-side-t.jpg + :target: braid-and-nested-from-side.jpg + +detail of the concentric / intersecting circles from above: + +.. image:: nested-from-above-t.jpg + :target: nested-from-above.jpg + +The four suits of playing cards, but the bottom half is made by the +reflection of the top half: + +.. image:: card-suits-plane-t.jpg + :target: card-suits-plane.jpg + +Above the mirror, a fish; inside the mirror, its bones: + +.. image:: fish-bone-t.jpg + :target: fish-bone.jpg + +A flower above the mirror, its flowerpot inside: + +.. image:: flower-pot-t.jpg + :target: flower-pot.jpg + +There was also a workshop, in which we built this thing: + +.. image:: slides-good-angle-t.jpg + :target: slides-good-angle.jpg + +If you put marbles on the slides, they roll toward the centre, +appearing to roll upwards. This is how the same object looks from the +opposite side: + +.. image:: slides-bad-angle-t.jpg + :target: slides-bad-angle.jpg + +and another side-view: + +.. image:: slides-from-side-t.jpg + :target: slides-from-side.jpg + +.. _`Japan House`: https://www.japanhouselondon.uk/ +.. _`SUGIHARA Kokichi`: + http://www.isc.meiji.ac.jp/~kokichis/Welcomee.html diff --git a/src/modelli/sugihara-impossible-objects/document.it.rest.txt b/src/modelli/sugihara-impossible-objects/document.it.rest.txt new file mode 100644 index 0000000..36c14a4 --- /dev/null +++ b/src/modelli/sugihara-impossible-objects/document.it.rest.txt @@ -0,0 +1,100 @@ +============================================= +Gli "oggetti impossibili" di Sugihara Kokichi +============================================= +:CreationDate: 2019-10-05 12:22:35 +:Id: modelli/sugihara-impossible-objects +:tags: - japanese + - 3dPrint + +Nel settembre 2019, la `Japan House`_ ha organizzato una presentazione +di `SUGIHARA Kokichi`_, inventore di molte illusioni ottiche ottenute +tramite oggetti tridimensionali. Aveva portato alcuni esempi, e io ho +fatto foto. + +Una freccia che punta sempre a destra: + +.. raw:: html + + + +Vista dall'alto, si presenta così: + +.. image:: arrow-from-above-t.jpg + :target: arrow-from-above.jpg + +Quattro cerchi blu, e quattro cuori, ma se si guardano dall'altro lato +(o attraverso uno specchio piano) diventano una stella a quattro punte +e i semi delle carte: + +.. image:: card-suits-plus-pointy-circles-t.jpg + :target: card-suits-plus-pointy-circles.jpg + +di lato sono così: + +.. image:: card-suits-plus-pointy-circles-from-side-t.jpg + :target: card-suits-plus-pointy-circles-from-side.jpg + +Sei quadrati, o sei cerchi? + +.. image:: square-circles-t.jpg + :target: square-circles.jpg + +di lato: + +.. image:: square-circles-from-side-t.jpg + :target: square-circles-from-side.jpg + +Un anello di cerchi, e tre cerchi concentrici, ma dall'altro lato si +vede un anello di quadrati, e tre cerchi intersecati: + +.. image:: braid-and-nested-t.jpg + :target: braid-and-nested.jpg + +visti di lato: + +.. image:: braid-and-nested-from-side-t.jpg + :target: braid-and-nested-from-side.jpg + +dettaglio dei cerchi concentrici / intersecati, dall'altro: + +.. image:: nested-from-above-t.jpg + :target: nested-from-above.jpg + +I semi delle carte, ma la metà inferiore è l'immagine riflessa della +metà superiore: + +.. image:: card-suits-plane-t.jpg + :target: card-suits-plane.jpg + +Sopra lo specchio, un pesce; dentro lo specchio, la sua lisca: + +.. image:: fish-bone-t.jpg + :target: fish-bone.jpg + +Un fiore sopra lo specchio, il vaso dentro: + +.. image:: flower-pot-t.jpg + :target: flower-pot.jpg + +C'era anche un "workshop", in cui abbiamo costruito questo: + +.. image:: slides-good-angle-t.jpg + :target: slides-good-angle.jpg + +Se si mette una biglia su una delle guide, rotola verso il centro, +apparentemente verso l'alto. Lo stesso oggetto, visto dalla parte +opposta, è così: + +.. image:: slides-bad-angle-t.jpg + :target: slides-bad-angle.jpg + +e visto di lato: + +.. image:: slides-from-side-t.jpg + :target: slides-from-side.jpg + +.. _`Japan House`: https://www.japanhouselondon.uk/ +.. _`SUGIHARA Kokichi`: + http://www.isc.meiji.ac.jp/~kokichis/Welcomee.html diff --git a/src/modelli/sugihara-impossible-objects/du2html.xsl b/src/modelli/sugihara-impossible-objects/du2html.xsl new file mode 120000 index 0000000..e2487e0 --- /dev/null +++ b/src/modelli/sugihara-impossible-objects/du2html.xsl @@ -0,0 +1 @@ +../../../templates/du2html.xsl \ No newline at end of file -- cgit v1.2.3