define dimensional unit define dimensional unit with clear explanation and derivation
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a dimension is a measure of physical variable which is represented without numerical values for example length is a dimension but it is measured in feets or metres
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A dimension is a measure of a physical variable (without numerical values), while a unit is a way to assign a number or measurement to that dimension. For example, length is a dimension, but it is measured in units of feet (ft) or meters (m). ... the British Gravitational System of Units (BG)
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