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In the language of measurement, 'dimensions' are measurable attributes of reality such as 'time', 'distance', 'velocity', 'mass', 'weight', and so on.

A system of Fundamental dimensions is such that every other dimension can be generated from them.

Traditionally, the accepted fundamental dimensions are mass, length, time, and electric current, but in principle, the 3 other fundamental dimensions could be used (thermodynamic temperature, amount of substance, luminous intensity).

Velocity, for example, is length divided by time, and so can be generated from the above list of fundamental dimensions.

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Revision as of 23:51, 8 December 2001 edit AxelBoldt (talk \| contribs) Administrators 44,502 edits They are not irreducible; it's just a convention which one to call "fundamental". Some people take mass, time and energy. ← Previous edit		Revision as of 00:15, 9 December 2001 edit undo Little_guru (talk) No edit summary Next edit →
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	A system of <b>Fundamental dimensions</b> is such that every other dimension can be generated from them.		A system of <b>Fundamental dimensions</b> is such that every other dimension can be generated from them.

	Traditionally, the accepted fundamental dimensions are [[mass]], [[length]], [[time]], and [[~~temperature~~]], but in principle, other fundamental dimensions could be used.		Traditionally, the accepted fundamental dimensions are [[mass]], [[length]], [[time]], and [[electric current]], but in principle, the 3 other fundamental dimensions could be used ([[thermodynamic temperature]], [[amount of substance]], [[luminous intensity]]).