Absolutely brilliant lecture. Quite long but none the worse for that. When I retired in 2005, shortly afterwards I was diagnosed with Parkinson's disease. I initially determined that I would put behind me my teaching and my mathematics and I would look forward to different interests. I couldn't do it! I embarked for my own satisfaction on making various mathematical models and devise ways to make them available to high school students. What a journey I've had! Initially developing work on the regular, platonic, solids known to the Greeks some two and a half thousand years ago. I then started looking at other less well known ones. A soccer ball is pentagons surrounded by hexagons. I wondered if there was something that was 'hexagons' surrounded by pentagons. Known as a Johnson near-miss solid. I made one and then engaged with a friend over a number of years on the web as to its viability. Also my other friends both scientists with an interest in Chemistry introduced me to 'crstallography' 'fullerenes' and 'puckered hexagon rings'. I rediscovered what a beautiful subject mathematics is, and also, what a lot can be gained by trying practical hands-on by amateur and professional alike. I am currently devising some work on making nested platonic solids but starting with the 'mothership' the non-platonic 'rhombic triacontahedron'. Professor Schectman is a lovely man, who espouses the very best of science and scientific research and would be an inspiration to any student or teacher with just the basics of mathematical geometry. Thank you Professor Schectman it was a delight for me and I would highly recommend this to others. It was a real joy!

I am inspired by this man's presentation at the Indian Science Congress 2016🙏🏻

Is he wearing a quasicrystal pattern tie?

very good lecture great research by prof Daniel Schechtman

I came here from the eighth dimension videos exploring the 3 dimensional lattice of the shape known as E8. This talk was great and inspiring!

I still do not understand how Daniel Schechtman got the Nobel prize alone. In my humble opinion it should have been shared with sir Roger Penros and Paul Steinhardt. Daniel Schechtman found this by accident while sir Penros and paul Steinhardt did it the hard working way by proving it.

this will change our world.

Thankyou

So, if the field of crystallography had to update with quasicrystals, why aren't the Wallpaper Groups updated with 5-fold symmetries?

All I can say is TR-3B

👍👍👍

The figure in the former (facebook) site is the basis of the alternative simple explanation which I suggest .

A more detailed information (in English) can be found at www.tapuz.co.il/blog/net/viewentry.aspx?r=1&EntryId=3156774

This lecture proves mainly the lack of imagination by Professor Shechtman. There is a much simpler explanation to the existence of 5-fold and 10-fold symmetries in nature.