On Fri, Mar 23, 2012 at 5:14 PM, <valdis.kletni...@vt.edu> wrote: > On Fri, 23 Mar 2012 13:16:59 -0700, George Herbert said: >> The physics is not conducive to improving the situation a lot. >> >> There's probably $1.5 billion in the ground already in neutrino >> detectors; the total combined detector bit rate is pretty poor. One >> experiment looking at neutrinos coming off the Fermilab accelerator >> had 473 million accelerator pulses with under 1.1 million detected >> neutrinos. > > Note that each pulse was probably millions or even billions of neutrinos, so > the detection rate was even worse than you'd think. I saw a statistic that > every second, 50 trillion neutrinos pass through your body. And the number > that will interact is well into the single digits. >
Small detection numbers are not, per se, fatal to communication. What fraction of the photons generated by a GPS satellite are captured by your phone? The neutrino interaction rate increases with neutrino energy, and sea water makes a good neutrino detector. You could, for a billion dollars, do a LOT better than they did. By the way, here is the original paper : http://arxiv.org/pdf/1203.2847v1.pdf Regards Marshall
