Natural Science Forum / Physics / Particle Physics / February 2008

Any information?

Why do particle physicists think that elementary particles are 0-
dimensional points, or 1-dimensional strings?
I don't understand how any object can occupy less than 3 dimensions,
in 3 dimensional space.

    I am currently working through a copy of _The Physics of Time
Reversal_ by Sachs. Sachs often refers to an "equal time commutation
relation."  I remember studying commutation relations  in Bransden &
Joachain's textbook when I took quantum mechanics, but I do not recall

Perhaps there is a case for NO Quarks?
The notion of quarks with partial charges constituting the proton is
easily replaced by a simple particle concept that creates the effect
of partial charges, but makes them unable to be removed from a

What can be expected to be the bandwidth
of a normal silver plated surface mirror.
For visible light it is obvious but what is
to be expected for freq. much larger and