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I cant get a sharp tail of the revolving electron. Do you know how to do that?

Originally Posted by

Well, the easiest way to achieve the "sharp" shape for the tail in the way that you require, is to:

1. Select the "tail" particleShape and apply a Radial field.
2. Parent the Radial Field to the smaller sphere
3. In the Attribute Editor, set the field to be a "volume" with a shape of "Sphere".
4. Position this field at roughly the distance behind the small sphere where you want the tail to be "sharp".
5. Adjust the fields' magnitude to a NEGATIVE value (i.e. -50 for example) so as to pull the particles into the shape of a point at the moment before they die user added image

Also tell me what are "Particle Expressions"? Is this some kind of programming??

Originally Posted by

For more detailed explanation on that exact question, see the following chapters in the Maya help:

Using Maya
__>General
_____>Mel and Expressions
________> Particle Expressions <-- user added image

Good luck!