Summary. 1  Buoyancy (also known as the buoyant force) is the force exerted on an object that is wholly or partly immersed in a fluid. 2  The symbol for the magnitude of buoyancy is B or FB. 3  As a vector it must be stated with both magnitude and direction. Buoyancy (also known as the buoyant force) is the force exerted on an object that is wholly or partly immersed in a fluid. 2  The symbol for the magnitude of buoyancy is B or FB.
Epidemiologists collect and analyze data to investigate health issues. For example, an epidemiologist might collect and analyze demographic data to determine who is at the highest risk for a particular disease.pidemiologists collect and analyze data to investigate health issues. For example, an epidemiologist might collect and analyze demographic data to determine who is at the highest risk for a particular disease.
It is a highly quantitative discipline based on principles of statistics and research methodologies. Epidemiology Key Terms and Core Concepts â¢ Distribution: Epidemiologists study the distribution of frequencies and patterns of health events within groups in a population.sing descriptive epidemiology, epidemiologists characterize health events in terms of time, place, and person.â¢ Determinants: Epidemiologists search for causes or factors that are associated with increased risk or probability of disease.