[visionlist] Peter van der Helm

[Prof. Michael Bach]

Dear Rob, Johan and All:

> Hereby we sadly announce the passing of dr. Peter van der Helm. …
Thank you, sad indeed. I might add that he also “invented” the Kaleidoscope motion illusion
https://michaelbach.de/ot/mot-kaleidoscope/
and 13 years ago I had some delightful email interactions with him on this (witty & gentle indeed).


Regards, Michael 
-- 
Prof. Michael Bach   <https://michaelbach.de>