A look at creating a spherical push around a point in Softimage ICE where Alan Fregtman covers the basics of using and applying some simple vector math to drive some particles around a sphere.

in this tutorial Alan teaches how to apply some vector math basics to do a spherical push around a point

Applying vector math to a null, particles, and finally a curve, Alan notes that although the examples are simple, they provide a foundation for creating interesting deformations, as shown by the second example, where he creates a tubular push, which applies the same math in the context of a push deformer working outwards of a curve.