Scientific observation

classical formulation of Mechanics by Isaac Newton

thumb|upright=1.15|The Royal Observatory, Greenwich|Royal Greenwich Observatory in [[England]]

field of astronomy concerned with recording data about the observable universe

meteorological instrumentation

gravitational wave event

physical law

extend Newton's laws of motion to rigid bodies

thumb|A transect running across a stream. A transect is a path along which one counts and records occurrences of the objects of study (e.g. plants).

observational bias that occurs when people only search for something where it is easiest to look