Length measurement & instrument reading
Vernier: n divisions = n−1 mm on main scale; reading L = M + k/n mm. Micrometer: 0.5 mm pitch, 50-division thimble → 0.01 mm.
DC circuitsInstrument reading, resistivity, Ohm’s law, EMF, RC.
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Length measurement & instrument reading
Vernier caliper: main reading + vernier × precision. This “Length measurement & instrument reading” page is an MVP interactive sketch — formulas, controls, and live readouts in the browser; a fuller bench may follow.
Vernier caliper: main reading + vernier × precision.
Key formulas
l=l_0+n\cdot\Delta l
How to use
- Adjust parameters in the left panel.
- Use play / pause and speed controls.
- Match right-side readouts to the formulas.
- Reset to return to the initial state.
Applications
- Length measurement & instrument reading: Vernier caliper: main reading + vernier × precision.
- Classroom focus: reading L = M + k/n mm.
FAQ
What does MVP mean on this page?
An interactive sketch with formulas and parameters. Polished Ready labs are the full bench experience.
What does the “Length measurement & instrument reading” lab practice?
Tune parameters and match readouts to the “Length measurement & instrument reading” relations — useful for prep and demos.
Why estimate beyond the smallest division?
It adds a significant figure and reminds you every reading has uncertainty.
Why average repeated measurements?
Averages reduce random error so the result sits closer to the true value.