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For the use of hydrologists, ecologists, and water-resource managers in the study of surface water flows in the United States, the United States Geological Survey created a hierarchical system of hydrologic units. Infographic explaining the hierarchy of the United States hydrologic unit system. Originally a four-tier system divided into regions ...
No description. Template parameters [Edit template data] Parameter Description Type Status Month and year date The month and year that the template was placed (in full). "{{subst:CURRENTMONTHNAME}} {{subst:CURRENTYEAR}}" inserts the current month and year automatically. Example January 2013 Auto value {{subst:CURRENTMONTHNAME}} {{subst:CURRENTYEAR}} Line suggested Affected area 1 Text to ...
The systems formalised the concept of a collection of related units called a coherent system of units. In a coherent system, base units combine to define derived units without extra factors. [4]: 2 For example, using metre per second is coherent in a system that uses metre for length and second for time, but kilometre per hour is not coherent.
Taxonomy is a practice and science concerned with classification or categorization. Typically, there are two parts to it: the development of an underlying scheme of classes (a taxonomy) and the allocation of things to the classes (classification).
Planck units is system of geometrized units in which the reduced Planck constant is included in the list of defining constants. It is based on only properties of free space rather than of any object or particle. Stoney units is a system of geometrized units in which the Coulomb constant and the elementary charge are included.
Eonothem, erathem, system, series, subseries, stage, and substage are the hierarchical chronostratigraphic units. [14] A geochronologic unit is a subdivision of geologic time. It is a numeric representation of an intangible property (time). [16] These units are arranged in a hierarchy: eon, era, period, epoch, subepoch, age, and subage. [14]
An outline, also called a hierarchical outline, is a list arranged to show hierarchical relationships and is a type of tree structure. An outline is used [1] to present the main points (in sentences) or topics of a given subject. Each item in an outline may be divided into additional sub-items.
{{google|1 pound in kilograms {{=}}}} 1 pound in kilograms = Use Template:= to add an = sign to trigger Google Calculator when necessary; that template cannot be substituted. {{google|1 pound in kilograms}} 1 pound in kilograms: Google may display Calculator results for some expressions even if they lack a trailing equals sign.