we have a whole street made of them... welcome to Helsinki... t.
On Dec 14, 2011, at 1:10 AM, Jacob Keller wrote: > Does anyone know where one can acquire some Penrose tiles? I think > they'd be great toys as well, and drive you a little bonkers. Maybe a > kitchen/bathroom floor made from them? > > Jacob > > On Tue, Dec 13, 2011 at 5:03 PM, VAN RAAIJ , MARK JOHAN > <mjvanra...@cnb.csic.es> wrote: >> reminds me of these symmetric 2D P3 lizards: >> http://www.worldofescher.com/store/Z51.html >> I bought the RGB-coloured set/puzzle after visiting an Escher exhibition and >> sometimes use them in crystallography/symmetry teaching. >> Nice to make the students assemble them and then decide on the symmetry >> operator, unit cell and asymmetric unit. >> >> >> Quoting Phoebe Rice: >> >>> Hi all, >>> For those who teach xtallography - we found some plastic turtles that can >>> be snapped together in an amazing variety of space groups. Worked well in a >>> workshop for our students, so I thought I'd share the shopping tip. They're >>> called Reptangles, and we got them from Amazon. >>> >>> http://www.amazon.com/Fat-Brain-Toys-FA042-1-Reptangles/dp/B00392NSQ4 >>> >>> Have fun! >>> >>> Phoebe >>> >>> ===================================== >>> Phoebe A. Rice >>> Dept. of Biochemistry & Molecular Biology >>> The University of Chicago >>> phone 773 834 1723 >>> >>> http://bmb.bsd.uchicago.edu/Faculty_and_Research/01_Faculty/01_Faculty_Alphabetically.php?faculty_id=123 >>> http://www.rsc.org/shop/books/2008/9780854042722.asp >>> >> >> >> >> Mark J van Raaij >> Laboratorio M-4 >> Dpto de Estructura de Macromoléculas >> Centro Nacional de Biotecnología - CSIC >> c/Darwin 3, Campus Cantoblanco >> 28049 Madrid >> tel. 91 585 4616 >> email: mjvanra...@cnb.csic.es > > > > -- > ******************************************* > Jacob Pearson Keller > Northwestern University > Medical Scientist Training Program > email: j-kell...@northwestern.edu > ******************************************* > Tommi Kajander, Ph.D., Docent Structural Biology and Biophysics Institute of Biotechnology University of Helsinki Viikinkaari 1 (P.O. Box 65) 00014 Helsinki Finland p. +358-9-19158903 tommi.kajan...@helsinki.fi
