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GeoGebraGeoGebra Klaslokaal

FormContentCircle

Form vs Content

As the form (mass) rotates clockwise, its contents (particles) rotate counter-clockwise. You can check "Content Marker" and "Waveform" to see them clearly. Actually, each content particle oscillates between counter-clockwise and clockwise directions:
  • When the contents are far from the form, they're free (dispersed, scattered, diverged), and move in the opposite direction with the form, i.e. counter-clockwise.
  • When the contents are near to the form, they're conforming (gathered, concentrated, converged), and move following the form, i.e. clockwise.
This is the nature of wave. Here the form is the waveform and of that wave. This phenomenon can also be seen clearly in the water wave (in the applet, check "Particles" and watch the green water wave).