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This GeoGebra book is UNDER CONSTRUCTION. However, some content is present here and may be correct.
This GeoGebra book correlates with book "The Optics of Shadow Bands" so it simply inherited the title. The book can be bought on Amazon.
[url]https://www.amazon.com/Optics-Shadow-Bands-Causation-Effect/dp/869081941X/[/url]
In "Shadow Bands Simulation" try to set number of columns (resolution) and frequency as greater as possible, without effecting rendering. Too big values would cause the simulation to slow down or even GeoGebra app to stop responding.
To simulate shadow bands move time (t) slider. You can also animate the slider within Algebra view.