empirical law
law or formula deduced from experimental facts, or validated by experience
empirical statistical law
statistical tendency that occurs in a broad range of datasets
Engel's law
empirical observation in economics that as income rises, less is spent on food
Law of flat surfaces
concept for home organization and cleaning
Benford's law
observation about the frequency distribution of leading digits in many real-life sets of numerical data
double bond rule
reduced tendency of main-group elements after period 2 to form stable multiple bonds
Paris' law
empirical power law relating crack growth to stress intensity factor range
Hooke's law
empirical physical law of mechanics that the force on a spring is proportional to its displacement