The Coffee Ring Effect, from Pitt T. Maner III
One for Dr. Bejan.The Coffee Ring Effect is a well-known phenomenon. A puddle of coffee leaves behind a dark ring, instead of a uniform brown stain. This video explains why— and how this phenomenon resembles what happens in an avalanche.
Dr. Adrian Bejan replies:
Dear Victor and Pitt,
Thank you for this excellent video. Very inspiring.
I have not worked on predicting the coffee ring phenomenon, but I worked on related phenomena. Here I show you two related ideas:
First, my short video on predicting the architecture of the snowflake, which is based on an article in nature scientific reports.
Second, my article on how to predict droplet impact behavior, splat vs splash. No film about this yet.
The broader domain of life and evolution as physics, to which all evolutionary flow architectures belong, was reviewed during my lecture at the NYC Junto on 3 September.
With best wishes to all,
Adrian
Adrian Bejan ( MIT ' 71, ' 72, ' 75 ) J.A. Jones Distinguished Professor Duke University