Here is one definition;
http://www.servtech.com/~wkimler/phacts/phacts.html#tachyons
What are tachyons?
No, they are not particles with a poor taste in clothing. They are
hypothetical particles whose speed is always greater than that of
light. You may recall that one of the basic principles of relativity
is that no object can travel faster than light.
What makes this particle even more interesting is that it is said to
have an imaginary mass. Imaginary in this sense refers to the
mathematical definition of a number which is multiplied by the square
root of -1. The energy of a tachyon is supposed to decrease as its
speed increases, approaching zero as its speed heads toward infinity.
Various experimental searches have been made for tachyons, with no
success so far.
==================================
Here is another interesting version;
http://crystalinks.com/tachyon_energy.html
==================================
---Norman Wootan wrote:
>
> Hi! Jerry et al: The term Tachyon Energy originated with Hans
Neiper of
> West Germany
> and is found in his book "Revolutions in Medicine and Technology".
As far
> as I know he was the first to "coin" this term. Norm
>
> Jerry Wayne Decker wrote:
>
> > Hi Folks!
> >
> > Years ago at a conference a lady named Mary Hardy got up onstage and
> > was using the term 'tachyon' to describe what she believed was a
> > mysterious energy effect that occurs with obelisks and pyramids
tuned
> > to each other to create 'standing columnar waves' in the atmosphere
> > for the purpose of controlled weather engineering.
> >
> > I questioned her meaning of the term tachyon as to my
understanding it
> > normally meant a faster than light particle. She explained that to
> > their understanding, what she was referring to was 'tacky ions'
where
> > this tuned columnar wave would bond these ions together to effect
> > changes. There is more in her book on 'Pyramid Power' where she,
her
> > husband Dean and friends have done many experiments with this energy
> > and phenomenon.
> >
> > Anyway, just an alternative version of tachyon. Interesting how it
> > sounds like Ken Shoulders Electro Validium clusters where he can
cause
> > normally repellent to each other electrons to cluster together like
> > grapes, then throw them at a mass where in their powerful escape
from
> > each other, they create phenomena.
> >
> > ---NeXuS wrote:
> > >
> > > They might call it 'Tachyon' as it supposedly increases life and
> > reverse
> > > damage as with the rose as 'tachyons' cause they have a
superluminal
> > speed
> > > tends to warp time =) Just a thought =)
> > >
> >
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