Scientific

A diagram is a two-dimensional geometric symbolic representation of information according to some visualization technique. In science according to Anderson [1997], Diagrams are pictorial, yet abstract, representation of information and maps, line graphs, bar charts, engineering blueprints and architects' sketches are all examples of diagrams.

General purpose diagrams assume an important role in mathematics, biology, physics, chemistry because they provide representational frameworks that are applicable to a range of problem structures.

Laboratory equipment is generally used to either perform an experiment or to take measurements and gather data.

Rules:

• Draw objects in two dimensions.
• Draw clean, single lines.
• Don't close off the openings of glassware.
• Use a ruler to draw straight lines.
• Don't shade or color in.
• Don't 'float' objects.
• Label objects with simple straight lines.