Measurement & Physical Quantities — three ways to learn it.

The complete written lesson — base & derived quantities and SI units, scientific notation & prefixes, dimensions & dimensional analysis, significant figures, errors & uncertainties, least count, and the vernier calipers & screw gauge with worked readings.

As you scroll, a live panel animates every idea: the seven base units light up, digits get counted for significance, errors land on a target — and the board-practical section swaps in the real 3D vernier calipers & screw gauge you can slide yourself.

Measure spheres, wires and sheets with the virtual calipers and apparatus on a safe, virtual bench. All of the course's hands-on physics apparatus lives here.