CMU Ramon Llull, Barcelona, 6/11/2017

Miquel DuranCàtedra de Cultura Científica i Comunicació Digital

miquel.duran@udg.edu

Universitat de Girona

@miquelduran #rubsci #magsci @magsci @c4dudg

Ciència, màgia i misteris

del Cub de Rubik

40 anys del Cub de Rubik: google doodle

• https://www.google.com/doodles/rubiks-cube

• App del Cub de Rubik a Google

• https://www.imagecu.be/

• https://www.chrome.com/cubelab

Scientific American, 1981SciAm 1981: cub rubik https://wearethemutants.com/2017/01/17/scientific-american-featuring-rubiks-cube-1981/

•

Rècords del món... 4,69 segons !

https://boingboing.net/2017/09/06/teen-solves-rubiks-cube-in-w.html/amp

El Cub de Rubik més gran del món

A l’MIT

https://boingboing.net/2017/04/19/worlds-largest-rubiks-cube.html

Robot que fa Cub de Rubik (Raspberry Pi)A Raspberry Pi-powered Rubik’s cube-solving robot

https://boingboing.net/2017/09/14/a-raspberry-pi-powered-rubik.html

Robot, Cub de Rubik... < 1s

https://boingboing.net/2016/11/11/watch-a-robot-solve-a-rubiks-c.html

RT @pickover: What kind of alien mind could dream of solving a 1000x1000x1000 Rubik's Cube? YouTube: http://bit.ly/1mNCUHB

Cub de Rubik 1000 x 1000 ! (simulat!)

En 20 moviments...

QUO: CIENCIA DEL CUBO RUBIKhttp://www.quo.es/ciencia/ciencia-del-cubo-rubik

Commutadors i conjugats= Mecànica quàntica: operadors

Exemples: sexy move S= R U R’ U’, S6 = I

Exemples: Permutació cíclica 3 arestes

R2 U R U R’ U’ R’ U’ R’ U R’

R i L commuten! R L = L R

https://ruwix.com/the-rubiks-cube/commutators-conjugates/

Resolució algorítmica – per fases

• Si vols anar ben lluny, ves-hi xino-xano

• Teoria de grups: per als matemàtics i científics

https://edunoming.wordpress.com/2016/11/01/resolucio-algoritmica-del-cub-de-rubik-les-fases-de-la-seva-resolucio/

L’abecedari i el Cub de Rubik

Per resoldre’l amb els ulls clucs:

https://ruwix.com/the-rubiks-cube/how-to-solve-the-rubiks-cube-blindfolded-tutorial/

Atenció: en un jocs de cartes de pòker hi caben 2 alfabets... I en un any de 364 dies, 14

Cub de Rubik en 4 dimensions!(recordem en Dalí!)

http://superliminal.com/cube/cube.htm

Qbe: Quark Matter on Rubik's Cube

https://arxiv.org/abs/1702.06217v1

Criptografia... Quàntica... RubikCubic Quantum SecurityQuantum cryptography provides us new methods of securing the communications. As compared to classical cryptography, which implies different mathematical algorithms to secure the information, quantum cryptography focuses on the physical support of the information. The process of information transmission or stocking is realized by the intermediation of a physical support, for example the photons transmitted by optical fiber or the electrons from the electricity. Communication security can be regarded as securing the physical support of the carrier of the information - in our case the photons from the optical fiber. Consequently, how and what an attacker can find out depends exclusively on the laws of physics. The paper presents a symmetrical encryption method based on the

method of mixture used by the rubik's cube.

http://ieeexplore.ieee.org/document/6822341

Química del i al Cub de Rubik

http://chemsec.org/solving-the-3d-puzzle-game-rubiks-cube-might-not-be-so-smart-after-all/

It turns out it’s probably not as smart as you

thought to play with the cube, except if you

bought yours in Sweden.

The NGO Arnika from Czech Republic tested the

ingredients of Rubik’s cubes and found the two

flame retardants OctaBDE and DecaBDE in

almost every sample they bought on a worldwide

scale.

Enantiòmers i diastereòmers

• El Cub de Rubik, igual que un dau, té isòmers que es reflexen al mirall: enantiòmers

• Igual que un parell de guants, o el L-limonè i el R-limonè

• També hi ha diastereòmers, que tenen les cares amb una configuració diferent

• Les peces del mig en general no importa quina orientació tenen... Excepte en els Cubs de Rubik de fotos

Taula periòdica dels elements al Pyraminx

https://www.google.com/patents/US6361324

Cub de Rubik amb la TPE

http://www.randelshofer.ch/rubik/virtual_cubes/professor/picture_cubes/5x_periodic_table_cube.html

Entropia i Cub de Rubik5 Life Lessons from the Rubik’s Cube

It is easier to create chaos than to create order.

https://goodmenproject.com/bits-and-pieces/life-lessons-from-the-rubiks-cube-lbkr/

Ciència dura: Llocs estranys per a un Cub de Rubik...Efect diòxid de carboni sobre peixos: Behavioural Disturbances in a Temperate Fish Exposed to Sustained High-CO2 Levels

http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0065825

Són els pops dretans? https://www.scientificamerican.com/gallery/rubiks-cube-to-reveal-octopus-handedness/

Una mica d’humor...

Cub de Rubik 2x2x2... de paper

https://www.youtube.com/watch?v=ySEEguxu_kA

Cub 2x2x2... de llana!

2x2x2 Rubik Cube: Meet the mathekniticians - and their amazing woolly

maths creations

https://www.theguardian.com/science/alexs-adventures-in-numberland/2016/oct/03/meet-the-mathekniticians-and-their-amazing-woolly-maths-creations

Cub de Rubik i psicologiaProblem solving:https://www.youcandothecube.com/blog/puzzling-science-using-the-rubiks-cube-to-teach-problem-solving

Cub de Rubik i el piano

https://www.intmath.com/blog/videos/math-movie-how-to-play-a-rubiks-cube-like-a-piano-10589

Rubik's Cube And Salvador Dali Elephants by Victoria Sinkevych

https://fineartamerica.com/featured/rubiks-cube-and-salvador-dali-elephants-victoria-sinkevych.html

Cub de Rubik i Escher...

https://twitter.com/i/web/status/817040298471727108

Mosaics amb Cubs de Rubik

https://www.youcandothecube.com/mosaics/create-your-own-mosaics

Màgia i Cub de Rubik...

• Força atractiva la resolució curiosa proposada per en Matt Parker: This Trick Makes It Look Like You Can Solve a Rubik’s Cube

• http://thescienceexplorer.com/technology/trick-makes-it-look-you-can-solve-rubik-s-cube

• Espectacularitat i relat del que es va presentar al show “Fool us” de Penn&Teller per Seteven Brundage

• https://www.youtube.com/watch?v=Qph0_pBUEr8

• Programa al #quequicom de dimarts 8/11/2016 sobre el Cub de Rubik:

• http://www.ccma.cat/tv3/alacarta/quequicom/la-genialitat-del-cub-de-rubik/video/5630304/

• Got Talent: Raymon• http://www.telecinco.es/gottalent/Raymon-mago-cubos-

rubik_2_2327880231.html

Rubik:

the most characteristic part of the cube is the contradiction between simplicity and complexity

Teniu poders màgics?

Moltes gràcies!

@miquelduran

Moltes gràcies a tothom!http://magsci.eu @magsci #rubsci

http://rubiks.comhttp://rubix.cathttps://www.worldcubeassociation.org