Horace Heffner wrote:
>
> Communication velocity of a two-way data transmission system could be
> defined as v = t/(2d) for transmission over straight-line distance d of
> varied data x_i and return of a modified verifiable response message f(x_i)
> in average transmission-response time t, where data x_i is not transmitted
> until receipt of f(x_(i-1)) is verified. The average time t would have to
> be for a large set of data transmissions {...,x_i,...}.
>
> Achieving FTL is then the condition v > c, or t < 2d/c.
>
Here is a proposal for a natural measure of FTL messaging.
I say it is natural because it does not require a response message.
The relevant variables are:
1) T - communication time. The time it takes to send and receive a message.
2) d - the distance between the receiver and the sender.
Each of these constitute a messages:
a.Group velocity
b.Phase velocity
c.Shock velocity (Nagel's message)
The signal speed for each is then d/Tg, d/Tp, d/Tc.
One would need to build a distant receiver which is capable
of interpreting all three signals.
Harry
