A teaching tape for BM-01, Tracer Ensemble and Observable Selection

Einstein's 0.8 micron particle

Scrub the observation interval and see the printed displacement figures reproduced under the historical constant set.

Open BM-01 with these settings

Where it starts

The settings the tape begins from, under the constant set einstein-1905-brownian-printed. Values are the model's own, not the laboratory control's display: a radius of 5e-7 is half a micrometre.
SettingValue
Temperature (T)290.15
Viscosity (eta)0.00135
Radius (a)5e-7

What it changes, and what to expect

  1. Set Observation interval (interval) to 1 changes how it is watched, not what happens

    Einstein's printed 1-second interval

    Einstein printed lambda_x = 8e-5 cm = 0,8 Mikron for 1 s.

    What the author recorded that a reader should see here.
    QuantityExpectedUnder
    lambda_x at 1 s0.7947833 umeinstein-1905-brownian-printed
  2. Set Observation interval (interval) to 60 changes how it is watched, not what happens

    Einstein's printed 60-second interval

    Einstein printed ca. 6 Mikron for 1 min.

    What the author recorded that a reader should see here.
    QuantityExpectedUnder
    lambda_x at 60 s6.156365 umeinstein-1905-brownian-printed

These are the values the tape's author recorded, not a result this page computed. Nothing here runs the instrument. Open BM-01 with these settings: the link puts them in its form, and it calculates when you apply them. Compare what it gives you with what is recorded here. The settings travel in the link and the laboratory reads them as it loads, so without JavaScript it opens at its worked example instead.

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