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Leave a note in the guest book - disabled since 2020
| jozef tari | 2013-04-20 08:53:06 |
| Reinder | 2013-04-18 07:56:39 |
| Hi, I implemented a webgl shader (running on chrome) showing the transformation of Escher on a 3D-city: https://www.shadertoy.com/view/Mdf3zM |
| Ten Boom | 2013-03-23 22:58:55 |
| I was totally caught by your five steps! tenboom.org |
| Andrew Hjermstad | 2013-03-20 20:49:19 |
| Cool site! Very nice work. I would totally order a print of this, if you included a magnifying glass! |
| Hi,
Nice work! I have a question/suggestion with regards to the radial stretch+rotation that you made of your infinitely retouched Print Gallery: if you, in addition, simultaneously made a circular translation of the right radius (in the same direction of the rotation) of the entire image (perhaps with some tailored adjustment of the phase velocity along the way), the ensuing spiral effect might give more of the feeling of entering the painting spatially. Would love to see it. |
| Frances de Vries | 2012-10-16 23:50:31 |
| Captivating artistry! Intriguing engineering feats with an artist flair. I have just discovered you thru my 20 year old daughter Anna! Do you have a biography in print? |
| Jackie Aldridge | 2012-10-16 18:17:58 |
| Thanks for the interesting site.
jackie |
| Jose Luis | 2012-09-15 21:52:04 |
| Thanks for the site. It is always nice to revisit M.C.Escher, and specially the mathematics associated with his work. |
| knezmej | 2012-08-06 11:12:54 |
| Joe Corneli | 2012-07-24 04:32:44 |
| Inspiring even many years after the fact - maybe my favorite Esher drawing. |
| Irene Thompson | 2012-07-19 19:09:37 |
| Comin' atcha from California. Loved your site. |
| wish that this was easier to grasp.. |
| Lloyd Smith | 2012-06-07 14:56:13 |
| This is great information for my research paper, thank you so much! |
| Chris Strunz | 2012-03-06 07:55:57 |
| Wow. His art is amazing. It's so complex. |
| Jessica Rojo | 2012-02-22 16:38:05 |
| Sophie | 2012-02-15 16:05:47 |
| Really great site and plenty of information, I could watch Escher artworks for hours and read about his way to distord images for hours too.
Thanks for your work here :) |
| John Walker | 2012-01-03 06:34:34 |
| Escher has always been my favorite artist. His prospective and logic are fascinating. He has influenced my art, photography, and has allowed me to 'see' beyond what is in front of me. |
| Richard Juday, PhD | 2011-12-11 05:21:49 |
| Very nifty mathematical explanation of what Escher was doing almost solely intuitively. What a pleasure to run across this site! I have been doing some related work, in which source images are filtered random fields and rendered in color. I have some new things to try now! |
| Sebastián Osorio | 2011-11-19 15:34:47 |
| Great exposition @Universidad de los Andes. I have a new perspective of Escher's Work. Thanks a lot. |
| Holden Madick | 2011-11-16 00:03:30 |
| Great website! Loved the fascinating patterns displayed! Helped me greatly on my art history report. |
| Shelender kumar | 2011-10-26 09:03:59 |
| Fantabulous,marvoulus,burrrrrrrah..................... |
| richard harding | 2011-10-24 02:28:20 |
| Thank you. I stumbled on this site as I was reading the book "Godel, Escher, Bach", by Douglas Hofstadter. Your site elaborates in greater detail some of the concepts in his book. Your website is wonderful! Thanks again! |
| Angela Maria Camara Nogueira da Gama | 2011-10-02 15:38:12 |
| É incrível o talento de Escher e arrebatador.
Foi para mim o precursor da ideia de sustentabilidade, no moto contínuo que materializou, onde a energia potencial da água em queda se transforma em mecênica da roda d'água, criando um movimento infinito sem consumo energético.
Um matemático que desenha, um desenhista que calcula.
Gostaria de ter conhecido de perto seu processo criativo! |
| Roger J. Tremblay, PhD | 2011-09-24 16:13:22 |
| Inspirational example of how a complex but beautiful application of mathematics can be presented with such clarity. I have never seen anything quite like it, web, television, text or live presentation (should be presented at TED?). Thank you for your efforts. |
| Thank you for the interesting site! Spooky mathematics, luckily you have the stop button. |
| Drs. Albert Spijkers | 2011-08-14 14:27:00 |
| I always liked Droste Chocolate, but makes you fat. But al fun aside, I had a book once about Escher explained, but WebGL can do a much better job explaining Escher's Lithographs. Infinitely moving down in the drawing details, like with fractals. |
| wayne ferguson | 2011-08-09 00:55:05 |
| i am looking for the mantis |
| Baumann Eduard | 2011-07-20 16:05:52 |
| Nice, this infinity with the limited AVI file. |
| Marcia Weinhold | 2011-07-07 22:18:45 |
| Thank you! This is fascinating! |
| Ryan-Georgia | 2011-07-06 08:35:29 |
| Great site! Escher is one of my favorite artists ever, and you did a great job explaining the mathematics behind the art. |
| Brilliant...on both Escher's and Lenstra's part... It is so interesting to see mathematical and artistic intuition cross-fertilizing. Grand unification of art and math - rather than GUT in physics. Escher/Lenstra personificaton of intuitive mathematician/artist. Always been fascinated by Hofstaeders book - Goedel, Escher, Bach and somehow this analysis kills the notion of incompleteness of Escher. |
| Cathy - Pittsburgh | 2011-05-02 15:54:44 |
| As perfect a blend of art, imagination and mathematics as I've ever seen: a genius' work! ☺ |
| Bill Hackborn | 2011-04-16 00:38:50 |
| Great site! Very interesting. |
| Thank you very much for sharing your work at Grinnell College. Your presentation was extremely interesting and entertaining. |
| Hello,
Glad to see fellow Escher enthusiasts, I have been curious about him for many years now, and as the days go by, my curiosity increases, I cant wait to see what you come up with next! |
| Chris Miller | 2011-04-04 20:29:02 |
| This is a very interesting topic. I had always wondered about the "scotoma" in " the Picture Gallery". |
| Aditya TVM | 2011-03-05 06:25:21 |
| Thanks a lot, if not for this site, i wouldn't have know the existence of Escher-Droste effect(i accidentally came across this site) and the whole process of how this genius artist made his awesome artwork... :)
i will try sketching with the reference to Escher's graph... thanks to your step by step detail description and examples:)
Thanks again... :) |
| Hans Wassink | 2011-02-20 09:06:05 |
| Of all the ways man can spend his time, this is by far the best. Keep it up! :D |
| Anton Älgmyr | 2011-01-23 00:43:16 |
| Thanks for the great lecture at the Sonja Kowalevsky days! It was by far the most interesting one we heard in the whole weekend (the participant's survey confirms that as well)!
I doubt you remember this, but I was the one who couldn't resist giving you a thumbs-up when I saw you just after the lecture. ;)
Take care! |
| Carla Blankevoort | 2011-01-05 18:41:39 |
| What a genius and wonderful that his genius lives on through this site and has other young geniuses working out his methodology! I wish I was clever enough to work it out myself, well done! |
| escher is een flut schilder. |
| Dr. Tom C.J. Gribnau | 2010-11-14 11:21:14 |
| Excellent work rding an excellent "artist" |
| Gustav Jonsson-Glans | 2010-11-13 23:39:16 |
| Great lecture at the Sonja Kowalesky days! Was really fascinating and inspiring, I'll look further into the technical aspects of this method. |
| Gustav Jonsson-Glans | 2010-11-13 23:39:00 |
| Great lecture at the Sonja Kowalesky days! Was really fascinating and inspiring, I'll look further into the technical aspects of this method. |
| Jan Hus | 2010-11-10 22:44:25 |
| I never heard of the Droste effect, but I vividly remember the Drosty container as a five year old. It must have been in 1933. My mother was in the hospital in Singapore and a Droste can was sitting on the table beside her bed. I think I was trying to see how far back I could still see a can. I did not remember the Droste name, but I was amazed to see the picture again. Wow the Droste effect. Thank you.
Jan Hus |
| Judai Burton | 2010-10-03 14:10:34 |
| a fascinating look into liberal arts math! |
| Andrew Wyszkowski | 2010-09-30 03:43:30 |
| Thank you for this study. I now have to digest it.
Best regards. |
| Beautiful stuff!
..thank you. |
| jock mctavish | 2010-08-25 03:57:54 |
| you do him honour
and extend our curiosity
in the same way he first attracted us
very well done
thankyou |
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