At 11:52 pm 06-12-04 -0900, you wrote: >At 11:01 PM 12/6/4, Keith Nagel wrote: >>Hi Terry. >> >>You will see from their scope graph >> >>http://physicsweb.org/articles/news/8/11/10/1/041110 >> >>that the light speed pulse is larger than both; measuring from the peak like >>that can be deceptive as they show. I also agree with >>the authors that a "signal velocity" or what I might call >>a shock wave velocity need be measured. > > >It seems to me that if the group velocity can be sensed at 3*c then that >constitutes data transmitted FTL. > >Live data can thus be sent FTL using parallel data cables (or fibers) for a >single bit (a bundle), and parallel bundles of cables for a binary word, >provided it is known *with good confidence* an interval for the arrival of >some indication of the value of each of the parallel data bits in a word. > >Multiple cables can be used to transmit each bit, including multiple cables >to transmit (initiate) the timing (strobe) pulse which starts the sensing >interval for a binary word. In this manner multi-bit words can be sent FTL >asynchronously. The first indication of a signal on any cable for a given >bit then sets that bit. This would not be 100 percent reliable, but >neither is any other form of transmission. An indication of both a 1 and a >0 value for a given bit would trigger error processing. If 32 cables were >used to transmit a pulse indicating a 1 bit in a given position of a binary >word, and 32 cables used to indicate a 0 bit in that word position, then it >is known with great reliability much faster than the speed of light if a >given bit is 0, 1, or in error. Transmitting an 8 bit byte (with parity) >in parallel would take 9*64 + 32 = 608 cables. It may be worthwhile to >dedicate 64 cables to the timing pulse bundle, which is always a 1 bit, for >reliability in identifying an earliest possible start for the strobe window. >The 640 cables is extravagant, but so what. It's just a proof of >principle.
So what indeed. A very clear explanation Horace. Even I managed to follow that. 8^) Cheers Grimer
