Molecular motion & Brownian motion
Suspended particles jitter from random molecular hits; hotter and smaller → more vigorous; evidence for molecules.
Thermal physics & gasesKinetic theory and ideal-gas processes.
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Molecular motion & Brownian motion
Brownian motion: random walk of particles, <x²>=2Dt. This “Molecular motion & Brownian motion” page is an MVP interactive sketch — formulas, controls, and live readouts in the browser; a fuller bench may follow.
Brownian motion: random walk of particles, <x²>=2Dt.
Key formulas
\langle x^2\rangle=2Dt
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
- Molecular motion & Brownian motion: Brownian motion: random walk of particles, <x²>=2Dt.
- Classroom focus: hotter and smaller → more vigorous.
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 “Molecular motion & Brownian motion” lab practice?
Tune parameters and match readouts to the “Molecular motion & Brownian motion” relations — useful for prep and demos.
Why is temperature steady while boiling?
Added heat goes into vaporization near the boiling point.
What does a large specific heat mean?
More heat is needed for the same mass and temperature rise.