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3. How are we sure that m for example is a base unit and is not made up from other units?

By reading the definition of a meter, and seeing that it is not simply made by multiplying or dividing other units, although it is related to the second.

The meter is the length of the path travelled by light in vacuum during a time interval of 1/299 792 458 of a second.

Current definitions of the SI UnitsSI base units, National InstituteInternational Bureau of Standards Weights and Technology.Measures (BIPM)

3. How are we sure that m for example is a base unit and is not made up from other units?

By reading the definition of a meter, and seeing that it is not simply made by multiplying or dividing other units, although it is related to the second.

The meter is the length of the path travelled by light in vacuum during a time interval of 1/299 792 458 of a second.

Current definitions of the SI Units, National Institute of Standards and Technology.

3. How are we sure that m for example is a base unit and is not made up from other units?

By reading the definition of a meter, and seeing that it is not simply made by multiplying or dividing other units, although it is related to the second.

The meter is the length of the path travelled by light in vacuum during a time interval of 1/299 792 458 of a second.

SI base units, International Bureau of Weights and Measures (BIPM)

Source Link
bdsl
bdsl
  • 640
  • 3
  • 11

3. How are we sure that m for example is a base unit and is not made up from other units?

By reading the definition of a meter, and seeing that it is not simply made by multiplying or dividing other units, although it is related to the second.

The meter is the length of the path travelled by light in vacuum during a time interval of 1/299 792 458 of a second.

Current definitions of the SI Units, National Institute of Standards and Technology.