Explore the fundamentals of physics by understanding units and scientific notation. This video summarizes how physical quantities are measured, expressed, and simplified using standard units and ...

If scientists had sacred objects, this would be one of them: a single, closely guarded 137-year-old cylinder of metal, housed in a vault outside of Paris. It is a prototype that precisely defines a ...

In 2018 the International System of Units will be redefined in terms of fundamental constants. Why this change is taking place is explained in this short film presented by Stephan Schlamminger of the ...

Class 11 Physics Chapter wise revision notes for Chapter 2 Units and Measurement (Part I) are available here. These notes are based on latest CBSE Class 11 Physics syllabus and NCERT textbook for ...

The experimental measurement of the fine-structure constant. © Pierre Cladé, Saïda Guellati-Khélifa and Tatsumi Aoyama The most precise measurement ever of the ...

Delve into the detail of atomic physics. As the basic units of matter, atoms are the building blocks for everything in the universe. Once thought to be indivisible, we now know they can indeed be ...