The Molecular Workbench software allows developers to create interlinked simulations. This allows many simulations in just one applet, which I call a "mega" applet. The following example, which provides simulations of physical phenomena at different scales, shows how this works.
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Here is another example of molecular dynamics simulations of pressure conveyance in different settings through fluids:
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A Molecular Workbench "mega" applet provides rich user experiences similar to Web 2.0, which can be designed using the software's authoring system. This is similar to Macromedia's Flash software.