Physical topics with a relation to biology are discussed. Radiative transfer of energy, boundary layers, heat conduction, diffusion, mass transport, and the use of radioactive materials in biology are considered. May not be held with PHYS 2271 or PHYS 2272. Prerequisite: a grade "C" or better in PHYS 1050 or PHYS 1051, or a "C+" or better in PHYS 1020 or PHYS 1021; or permission of the department.