A decametre (
International spelling as used by the
International Bureau of Weights and Measures
The International Bureau of Weights and Measures (, BIPM) is an List of intergovernmental organizations, intergovernmental organisation, through which its 64 member-states act on measurement standards in areas including chemistry, ionising radi ...
and by most English speaking countries,
dekameter or decameter
), symbol dam ("da" for the
SI prefix
The International System of Units, internationally known by the abbreviation SI (from French ), is the modern form of the metric system and the world's most widely used system of measurement. It is the only system of measurement with official st ...
''
deca-'',
"m" for the
SI unit
metre
The metre (or meter in US spelling; symbol: m) is the base unit of length in the International System of Units (SI). Since 2019, the metre has been defined as the length of the path travelled by light in vacuum during a time interval of of ...
), is a
unit of length
A unit of length refers to any arbitrarily chosen and accepted reference standard for measurement of length. The most common units in modern use are the metric units, used in every country globally. In the United States the U.S. customary un ...
in the
International System of Units
The International System of Units, internationally known by the abbreviation SI (from French ), is the modern form of the metric system and the world's most widely used system of measurement. It is the only system of measurement with official s ...
(SI) equal to ten metres.
While any combination of SI prefix and unit can be used, many are rarely used in practice; the decametre is used less frequently than other units of length. One practical use is for altitude of
geopotential heights in meteorology. The volumetric form ''cubic decametre'' is convenient for describing large volumes of water such as in rivers and lakes; a volume of one cubic decametre (dam
3) is equivalent to a capacity of one megalitre (ML).
One
technical atmosphere
Technical may refer to:
* Technical (vehicle), an improvised fighting vehicle
* Technical area, an area which a manager, other coaching personnel, and substitutes are allowed to occupy during a football match
* Technical advisor, a person who ad ...
is the pressure of one decametre of water. Also, the
are (a), a metric unit for land
area
Area is the measure of a region's size on a surface. The area of a plane region or ''plane area'' refers to the area of a shape or planar lamina, while '' surface area'' refers to the area of an open surface or the boundary of a three-di ...
, is equal to one square decametre (dam
2).
See also
*
Orders of magnitude (length)
The following are examples of order of magnitude, orders of magnitude for different lengths.
Overview
Detailed list
To help compare different orders of magnitude, the following list describes various lengths between 1.6 \times 10^ me ...
*
Conversion of units
Conversion of units is the conversion of the unit of measurement in which a quantity is expressed, typically through a multiplicative conversion factor that changes the unit without changing the quantity. This is also often loosely taken to incl ...
, for comparison with other units
References
Metre
+31
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