<BLOCKQUOTE id=quote><font size=2 face="Verdana, Arial, Helvetica" id=quote>quote:<hr height=1 noshade id=quote>[EBTX]: In the MetaModel, how does one define the term "collision" as it relates to particles?<hr height=1 noshade id=quote></BLOCKQUOTE id=quote></font id=quote><font face="Verdana, Arial, Helvetica" size=2 id=quote>
Generically, a collision is any kind of interaction between two concentrations of substance.
<BLOCKQUOTE id=quote><font size=2 face="Verdana, Arial, Helvetica" id=quote>quote:<hr height=1 noshade id=quote>Does a particle have a definite elastic covering, e.g. a spherical, geometric "skin" so to speak which bends, stores energy, then rebounds?
Or does a particle have a field of indefinite extent surrounding it which compresses and then rebounds as in the standard model?
Or is a particle a field that asymtotically approaches a spherical layer of definite finite radius?
Or is a particle simply the locus of an infinite number of particles on other scales that makes the question mute?<hr height=1 noshade id=quote></BLOCKQUOTE id=quote></font id=quote><font face="Verdana, Arial, Helvetica" size=2 id=quote>
Yes. <img src=icon_smile_big.gif border=0 align=middle>
All of the above, and other variants, apply at some scales under some conditions. However, most "hard" collisions can be modeled as either accretions or as elastic rebounds. -|Tom|-
