Physics and Python stuff. Most of the videos here are either adapted from class lectures or solving physics problems. I ...

Deluged by responses to his request for your favourite units, Robert P Crease discovers that non-SI units persist, and are sometimes even popular, among the physics community Setting the standard ...

MCQs on Units and Measurements Class 11: MCQs have become an important part of the CBSE exam pattern as the board has suggested all its schools design their exam papers and tests to assess students’ ...

For scientists, the story of metrology has a simple plot: to ensure that standards keep improving. The pound of Imperial France made way for the platinum Kilogram of the Archives in 1799. In 1889 it ...

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 ...