How do you define 'length' in physics?

Anonymous

∙ 8y ago

Updated: 8/21/2019

'Length' is the physical quantity that measures the linear spatial extent within an object and between objects. 'Width' is length from side to side. 'Depth' is length from top to bottom below a surface. 'Height' is length from top to bottom above a surface. And 'distance' is length between objects. In geometry, 'radius' is the length between a point on the circumference of a circle or sphere to the center. 'Diameter' is the length between two points on the circumference of a circle or sphere through the center. The meter is the basic unit of measurement of length according to the International System Of Units (SI). Astronomical lengths include the astronomical unit (AU), the light-year (ly), and the parsec (pc). The most common measuring tool for length is the straight-edge or ruler.

Wiki User

∙ 8y ago

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