A teaching tape for SR-08, electric and magnetic frame change

field frame change

Teaching tape demonstrating the transformation of electric and magnetic fields under a 0.6c boost.

Open SR-08 with these settings

Where it starts

The settings the tape begins from, under the constant set modern-si-2019. Values are the model's own, not the laboratory control's display: a radius of 5e-7 is half a micrometre.
SettingValue
Observer boost speed (boost)179875474.8
Test charge (testCharge)1.602176634e-19

What it changes, and what to expect

  1. Set Observer boost speed (boost) to 179875474.8 describes the same world from somewhere else

    field-transformation-0.6c

    At 0.6c a pure Ey=1 V/m field transforms to E'y=1.25 V/m and B'z=-2.5017e-9 T, preserving invariants.

These are the values the tape's author recorded, not a result this page computed. Nothing here runs the instrument. Open SR-08 with these settings: the link opens it with them already in place. 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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