Some of the simulations shown in this quantum-physics course are simply non-interactive
animations, as shown below.
Here the animation simply helps us to grasp the 3D nature of the molecule. In other
animations, time will be directly used to watch the time evolution of a quantum phenomenon
in slow motion, were slow means 15 to 30 orders of magnitude slower than the normal
time evolution, depending on the system actually considered.
Most of these simulations
are also interactive. This can simply consist in being able to change parameters
using buttons, menus or checkboxes. Here, for example, you can change the molecule being
Furthermore, it is often possible to directly access the object
being shown with the mouse. In such cases the mouse cursor is a hand, indicating that a
mouse-controlled action is available. In the above example, you can change the orientation
of the molecule.
In some cases, hotspots will be available. These spots can be
recognized when approched by the mouse, in which case they appear in red.
You can then click and drag these spots wherever you want and change a parameter of the
simulation in an intuitive way. In the simple example below, you can move around the
corners of a polygon.
Feel free to move the mouse around in the applet area in order to find the hotspots and
discover what you can do with them.
Finally, some two-variable functions are shown
in false colors. Note that in some cases it might be required to change the tunings of
your screen (brightness, contrast) in order to see the image in the best conditions.
Here too, the mouse is useful: it can help you view 1D sections of the function.