Lab notebook

Page from a laboratory notebook of Alexander Graham Bell, 1876
Page from the notebook of Otto Hahn, 1938
Lab notebook with the complete record of the experiments underlying a published paper
Chemistry stencils that used to be used for drawing equipment in lab notebooks

A laboratory notebook (colloq. lab notebook or lab book) is a primary record of research. Researchers use a lab notebook to document their hypotheses, experiments and initial analysis or interpretation of these experiments. The notebook serves as an organizational tool, a memory aid, and can also have a role in protecting any intellectual property that comes from the research.