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What are the physical quantities which most relate to their definition? Could you give some examples?

The definition I found is: " it is any property which can be measured".

In the case of mass the given example is "when we go buy apples we purchase two kilograms of apples.

Please give another example.

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closed as unclear what you're asking by ACuriousMind, Danu, Kyle Kanos, David Z Aug 12 '14 at 13:48

Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question.If this question can be reworded to fit the rules in the help center, please edit the question.

I've no idea what your precise question is. Are you just asking for examples of units? – ACuriousMind Aug 12 '14 at 11:22

Read the Wikipedia article, it has something about conversion of units.

If you have a length, you can express it as

  • 1 foot (ft)
  • 32 centimeter (cm)
  • 320 millimeter (mm)
  • 0.32 meter (m)
  • 12 inch (in)

The numbers are different, but the units are also. Together, they represent the same length in reality.

The SI base units are defined in various ways, see the origins.

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