What is the International System of Units and why do we need it?

The International System of Units (SI) is expected to be redefined in November 2018.

What is the SI and why do we need an International System of Units?

Watch the short interview with Joachim Ullrich, President of the Consultative Committee for Units and Germany’s National Measurement Institute talking about the history of the SI and why we need it for global trade and quality infrastructure.

This is the first interview in a series of eleven EURAMET videos.

Publication schedule:
The present SI
6 June 2018: What is the SI and why do we need an International System of Units? (2 min)
13 June 2018: How is the present International System of Units (SI) designed? (2 min)
15 June 2018: What are the drawbacks of the present SI? (1,5 min)

SI redefinition
19 June 2018: If we have such a beautiful system, why do we need to revise it? (1,5 min)
22 June 2018: How will the revision be achieved and are there examples from the past? (1,5 min)
27 June 2018: How will the kilogramme be defined in the future? (2 min)
29 June 2018: What are the benefits of a revised SI? (3 min)
3 July 2018: Will the redefinition have an impact on everyday life? (1 min)

Supporting new technologies
6 July 2018: Why is the revised SI also called the quantum SI? (1 min)
11 July 2018: What is the 2nd quantum revolution? (2 min)
16 July 2018: How does the revised SI support the development of quantum technology? (2,5 min)

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