These include strange attractors, fractals, and genetic algorithms.
Modern instruments are introduced, including laser interferometers and AFM's, and there are sections on fractals and motif analysis.
Teardrop fractals are derivable from cyclically symmetric fractals with a central element.
Whether you're writing a character who is a Civil Rights attorney or a 15 year old kid who just thinks that fractals and prime numbers are the coolest thing ever - it is having passion that makes a character engaging.
Using concepts and images of flowing fractals helps me to follow a patient's seemingly disjointed reasoning.