Biophysics is the study of physical processes in living systems as well as the application of physical methods to biological objects. It engages physiologists, biologists, and physicists alike. This book addresses application-related issues such as molecular "slow" communication (from enzymes to genetic manipulation), biophysical analytics (from X-ray analyses to tunneling microscopy), neurobiophysics (from synapses to the brain's magnetic field), and interactions (magnetic separation as well as the biological effects of light and microwave radiation). Increasingly, direct interfaces between technical and biological systems are being developed, such as controlling prosthetics through thought alone. The present text provides a variety of assistance for such problem areas, reducing mathematics to fundamental relationships.